Sociology of Physics: comment and indices

marcus · Aug 26, 2013

Update to post #417 external fellowships section:
Sean Gryb (Nijmegen U.) -> Nijmegen U. (Veni Fellowship)
Joseph Ben Geloun (Perimeter Inst.) -> Potsdam, Max Planck Inst. (Humboldt Fellowship)

marcus · Sep 6, 2013

marcus · Sep 7, 2013

A spot check of the pop-string book market on 7 September showed top five stringy titles (audio-parallel, grand, e-fabric, e-grand, fabric) ranking (2755+12735+15773+17003+17840)/5 for an average of 13,221.

marcus · Sep 16, 2013

Spot check noon 16 September showed an average salesrank of 9702 (top five were fabric, elegant, e-fabric, e-elegant, grand---respectively 5949+9284+10438+10994+11847)

marcus · Sep 18, 2013

This should be added to the list of useful links.

and also this

marcus · Oct 11, 2013

marcus · Oct 15, 2013

Spot check as of noon 15 October the pop-string top 5 (grand, hidden, elegant, aud-fabric, aud-hidden) had salesranks 6681+11805+11823+13249+13355 for an average of 11383.

Code:

Midmonth averages of string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
(15 October        11383)

With audible editions (as with electronic e-books) where Amazon does not give the exact salesranks must estimate them by averaging ranks of the editions that come immediately before and after them in the bestseller listings.

First-time faculty jobs in HEP theory (incl. phenomenology, cosmology etc.) for 2014 are starting to be posted.
Seven job descriptions so far.
Alabama http://inspirehep.net/record/1256870
Arizona http://www.physics.arizona.edu/~doug/latticejob_ad.txt
Buffalo http://inspirehep.net/record/1251342
Oregon https://academicjobsonline.org/ajo/jobs/3180
Princeton http://inspirehep.net/record/1252755
Santa Barbara https://recruit.ap.ucsb.edu/apply/JPF00230
Virginia Tech http://www.phys.vt.edu/jobs/Ads/CosmologySearch2014.pdf
http://particle.physics.ucdavis.edu/rumor/doku.php

Alabama's very broad "...candidate may include any of a variety of topics in theoretical elementary particle physics such as physics beyond the Standard Model, applications of particle physics to cosmology and particle astrophysics, quantum gravity, and string theory."

Arizona specifies "...lattice gauge theory."

Buffalo headlines phenomenology "...We seek candidates with a strong background in collider phenomenology, who will complement and strengthen the current research efforts of the High-energy Physics and Cosmology group (HEPCOS) at UB."

Oregon wants to "...especially encourage candidates with a strong interest in connections with experimental particle physics."

Princeton says hep-th, cond-mat, math-phys and comments "... The department has strong research groups in a number of subfields of theory (biophysics, condensed matter, cosmology and general relativity, high energy theory, and mathematical physics), but the goal of this search is not necessarily to strengthen an existing effort..."

Santa Barbara "...theoretical astrophysics or theoretical high energy physics"

Virginia specifies cosmology "...tenure-track opening in cosmology, broadly defined, including all areas of theoretical, observational, experimental, and computational cosmology."

marcus · Oct 18, 2013

marcus · Oct 21, 2013

Over the past 3 or 4 years a new center of QG research has been built up at Erlangen under the chairmanship of Thomas Thiemann. He recently sent out an email briefly describing the setup there (and announcing one or more postdoc openings). It's part of the QG landscape so I'll quote some excerpts:---------- Forwarded message ----------
Date: Sun, 13 Oct 2013 22:56:25 +0100
From: Thomas Thiemann <thomas.thiemann@gravity.fau.de>
Subject: postdoc in Erlangen

The Institute for Quantum Gravity (IQG) is part of the Erlangen Centre for
Astroparticle Physics (ECAP) which has a strong expertise in experimental
astroparticle physics. The IQG benefits from continuous exchange with the
excellency cluster 'Universe' in Munich, especially with the groups working
on (quantum) cosmology. The IQG fosters strong links with the Department of
Mathematics in Erlangen. The University of Erlangen has identified the
collaboration between the IQG, the chair for statistical physics and the
chair for algebra and representation theory as one of its prestigious
'emerging field projects' which is generously supported. Finally, the IQG is
in close contact with a network of international research centers focussing
on quantum gravity such as

the Albert Einstein Institute in Potsdam, Germany;
the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada;
the Institute for Gravitation and the Cosmos in State College, Pennsylvania,USA;
Louisiana State University in Baton Rouge, Louisiana, USA;
Institute for Theoretical Physics in Marseille, France;
Institute for Theoretical Physics in Warsaw, Poland.

Postdoctoral Positions in Erlangen-Nuernberg

In autumn 2014, at least one postdoctoral position in the field of quantum
physics of the gravitational field, in particular quantum gravity and
quantum cosmology, will be available at the Institute for Quantum Gravity
(IQG) (Theoretical Physics III) of the Friedrich Alexander University (FAU)
Erlangen-Nürnberg, Germany. The position is for two years with a possibility
of extension for one additional year, depending on funding. In exceptional
cases, a five year contract may be negotiable...

The successful candidate will be part of the new international centre for
quantum gravity at the FAU which just completed its building up phase. The
centre currently hosts 5 professors, 2 postdocs plus guests, fellows, PhD and
diploma/master students. Altogether, there is space for up to 30 scientists.
Current staff includes professors Kristina Giesel, Hanno Sahlmann, Frederic
Schuller (Interim professor), Michael Thies and Thomas Thiemann (Chair),
Emeriti Frieder Lenz (former chair) and Hartmut Hofmann, postdocs Daniele
Pranzetti and Derek Wise as well as 7 Phd and 4 master students. Former
institute member and Humboldt Fellow Jonathan Engle recently accepted a
tenure track assistant professor position at Florida Atlantic University and
holds an affiliate position. Another affiliate professor position is held by
Florian Girelli.
...
...
Applications will be reviewed starting November 15th, 2013 but later
applications will be considered until the position is filled. The starting
date of the position is normally Oct. 1st 2014 but there is some flexibility.
For further information about the University and the Institute please visit:
http://www.uni-erlangen.de/einrichtungen/fakultaeten/nat/departments.shtml
and
http://www.gravity.physik.fau.de.
For further information about the position please send an inquiry to
application@gravity.fau.de.

marcus · Oct 23, 2013

QG research including Loop has sprouted in several other institutions (e.g. Beijing Normal, Florida Atlantic, Nijmejen, Morelia...) However Thiemann in his recent letter mentions these seven. I'll give common internet names for them in alphabetical order.

AEI Potsdam
CPT Marseille
gravity Louisiana State
gravity Penn State
IQG Erlangen
Perimeter Institute
physics Warsaw

IQG Erlangen is new so the name is not well established, but if you google it you do get a link to the IQG (part of the Erlangen Center for Astroparticle Physics) and that seems to be the name Thiemann prefers--it is used in announcing job openings and conference/workshop events.
Likewise googling CPT Marseille will get you links to the Centre de Physique Theorique and Rovelli's group.
Penn State and Louisiana State are insufficiently specific pointers, but googling "gravity penn state" or "gravity louisiana state" immediately gets you links to the relevant institutes. In part due to recent name change these intitutes' official acronyms seem not yet well-enough established to work consistently in a search.

MIT has announced a first-time HEP-Theory faculty job opening for 2014:
http://inspirehep.net/record/1258712
I'll consider this as primarily a theory opening although it headlines a broad range of research areas "hep-ex, hep-lat, hep-ph, hep-th, nucl-th, physics-other, quant"
The announcement explicitly mentions string, along with several other areas of interest (quantum gravity...).
So now, as best we know, ten faculty openings (US and Canada) for 2014 have been announced. Application deadlines are mostly next month (November 2013)

Ten job descriptions so far.
Alabama http://inspirehep.net/record/1256870 (broad range)
Arizona http://www.physics.arizona.edu/~doug/latticejob_ad.txt (lattice gauge theory)
Buffalo http://inspirehep.net/record/1251342 (phenomenology)
LBNL https://academicjobsonline.org/ajo/jobs/3458 (particle data review + miscellaneous)
MIT http://inspirehep.net/record/1258712 (broad range but includes string)
Oregon https://academicjobsonline.org/ajo/jobs/3180 ("connection with experimental")
Princeton http://inspirehep.net/record/1252755 (hep-th, cond-mat, or math-phys)
Santa Barbara https://recruit.ap.ucsb.edu/apply/JPF00230 (theoretical astrophysics or hep)
Virginia Tech http://www.phys.vt.edu/jobs/Ads/CosmologySearch2014.pdf (cosmology)
York https://academicjobsonline.org/ajo/jobs/3266 (cosmology/particle astrophysics)

In general the research interests that physics departments are looking for in junior faculty now seems pretty much the same as it has been on average over the past 6 or 7 years:
String jobs per year, as a share of total in HEP-theory.
First time faculty hires in theoretical particle physics (Usa + Canada)
(Annual rates averaged over 3 year intervals.)

Code:

period          1999-2001   2002-2004   2005-2007   2008-2010  2011-2013
HEP theory hires   18         24          23          13         13
string hires        9          8           6           2          2

Sources: http://www.physics.utoronto.ca/~poppitz/Jobs94-08
http://particle.physics.ucdavis.edu/rumor/doku.php

___________

marcus · Oct 24, 2013

Another junior faculty opening:
SUNY-Albany http://albany.interviewexchange.com...=513FA348AACE49E37831276F083C9CA4?JOBID=43418 (particle astrophysics and cosmology)

Of the 11 positions advertised so far for 2014 quite a few seem to be specified for astrophysics/cosmology.
None specifically for string although that was mentioned among other lines of research in a couple of cases.

Spot check of pop-string book market today showed salesranks of the stringy top five (e-elegant, grand, fabric, elegant, parallel) averaging 11810.

marcus · Oct 26, 2013

marcus · Oct 26, 2013

marcus · Oct 30, 2013

Update on research posting rates as of 30 October= 303/365
(135 annualized from 112 found)
(666 annualized from 553 found)

Update on first-time faculty jobs in HEP-theory, for 2014. 11 openings have been posted so far, deadlines for application tend to be in November or December of previous year.

Alabama http://inspirehep.net/record/1256870 (broad range)
Arizona http://www.physics.arizona.edu/~doug/latticejob_ad.txt (lattice gauge theory)
Buffalo http://inspirehep.net/record/1251342 (phenomenology)
LBNL https://academicjobsonline.org/ajo/jobs/3458 (particle data review + miscellaneous)
MIT http://inspirehep.net/record/1258712 (broad range but includes string)
Oregon https://academicjobsonline.org/ajo/jobs/3180 ("connection with experimental")
Princeton http://inspirehep.net/record/1252755 (hep-th, cond-mat, or math-phys)
Santa Barbara https://recruit.ap.ucsb.edu/apply/JPF00230 (theoretical astrophysics or hep)
SUNY-Albany http://albany.interviewexchange.com...=513FA348AACE49E37831276F083C9CA4?JOBID=43418 (particle astrophysics and cosmology)
Virginia Tech http://www.phys.vt.edu/jobs/Ads/CosmologySearch2014.pdf (cosmology)
York https://academicjobsonline.org/ajo/jobs/3266 (cosmology/particle astrophysics)

Of the 11 positions advertised so far for 2014 quite a few seem to be specified for astrophysics/cosmology.
None specifically for string although that was mentioned as a possibility among other lines of research in a couple of cases.
Some trends in recent hiring are shown here:

Hires per year, in string and in HEP-theory as a whole, including string.
First time faculty hires in theoretical particle physics (Usa + Canada)
(Annual rates averaged over 3 year intervals.)

Code:

period          1999-2001   2002-2004   2005-2007   2008-2010  2011-2013
HEP theory hires   18         24          23          13         13
string hires        9          8           6           2          2

Source: http://www.physics.utoronto.ca/~poppitz/Jobs94-08
http://particle.physics.ucdavis.edu/rumor/doku.php
For additional detail see post #403

marcus · Nov 3, 2013

Update on first-time faculty jobs in HEP-theory, for 2014. 13 openings have been posted so far, TWO at Texas A&M (in astrophysics and in theoretical cosmology/astrophysics). Deadlines for application are mostly this month or next.

Alabama http://inspirehep.net/record/1256870 (broad range)
Arizona http://www.physics.arizona.edu/~doug/latticejob_ad.txt (lattice gauge theory)
Buffalo http://inspirehep.net/record/1251342 (phenomenology)
LBNL https://academicjobsonline.org/ajo/jobs/3458 (particle data review + miscellaneous)
MIT http://inspirehep.net/record/1258712 (broad range but includes string)
Oregon https://academicjobsonline.org/ajo/jobs/3180 ("connection with experimental")
Princeton http://inspirehep.net/record/1252755 (hep-th, cond-mat, or math-phys)
Santa Barbara https://recruit.ap.ucsb.edu/apply/JPF00230 (theoretical astrophysics or hep)
SUNY-Albany http://albany.interviewexchange.com...=513FA348AACE49E37831276F083C9CA4?JOBID=43418 (particle astrophysics and cosmology)
Texas A&M http://physics.tamu.edu/docs/positions/tenure-track_faculty_positions.pdf (astrophysics)
Texas A&M http://physics.tamu.edu/docs/positions/tenure-track_faculty_positions.pdf (cosmology/astrophysics)
Virginia Tech http://www.phys.vt.edu/jobs/Ads/CosmologySearch2014.pdf (cosmology)
York https://academicjobsonline.org/ajo/jobs/3266 (cosmology/particle astrophysics)

A large share of the 13 positions advertised so far for 2014 seem specified for astrophysics/cosmology. None of the openings were specifically for string although that line of research was mentioned as a possibility among others in a couple of cases.

Since we've turned a page, I'll bring forward the short record of pop-string salesrank averages.

Code:

Midmonth averages of string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
(15 October        11383)

marcus · Nov 11, 2013

As of 11 Nov the stringy top five (fabric, grand, elegant, aid-parallel, hidden) ranked
4171+5382+10954+10961+14383 for an average of 9170.

Links kept at hand for reference:

Publication, cites, jobs
http://inspirehep.net/info/hep/stats/topcites/index
http://inspirehep.net/search?ln=en&...search=Search&sf=&so=d&rm=citation&rg=25&sc=0
http://inspirehep.net/search?ln=en&...search=Search&sf=&so=d&rm=citation&rg=25&sc=0
http://sites.google.com/site/grqcrumourmill/
http://particle.physics.ucdavis.edu/rumor/doku.php
http://www.physics.utoronto.ca/~poppitz/Jobs94-08
http://www.calendardate.com/todays.htm
Schools, Conference sessions, Recorded Talks
http://www.perimeterinstitute.ca/conferences/loops-13
http://pirsa.org/C13029
http://gr20-amaldi10.edu.pl/index.php?id=18
Miscellany

http://resonaances.blogspot.com/2007/01/cern-th-2007.html

marcus · Nov 12, 2013

At noon 12 November the stringy top five (fabric, grand, e-elegant, hidden, elegant) ranked
6550+8634+13256+13651+15075
for an average of 11433

marcus · Nov 13, 2013

At noon 13 November the stringy top five (grand, fabric, e-elegant, hidden, h-grand) ranked
6499+7291+15629+15970+16756
for an average of 12429

marcus · Nov 14, 2013

Setting up to record the midmonth salesrank average for November

Code:

Midmonth averages of string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
12 November   11433
13 November   12429
14 November   10141
15 November    …..
16 November    …..
17 November    …..
18 November    …..

The pop-string top five as of noon on the 14th were grand, e-elegant, parallel, hidden, fabric.
(8353+9084+10827+11201+11242)/5 = 10141

marcus · Nov 15, 2013

(8728+8956+9002+10452+12412)/5=9910
e-elegant, parallel, grand, fabric, hidden
as of noon 15 November

marcus · Nov 16, 2013

Code:

Midmonth averages of string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
12 November   11433
13 November   12429
14 November   10141
15 November    9910
16 November    9554
17 November    …..
18 November    …..

At noon 16 November (6240+7539+8380+11843+13769)/5 = 9554
the pop-string top five being fabric, parallel, grand, hyper, e-elegant.

marcus · Nov 17, 2013

At noon 17 November (5676+9953+10832+11303+11975)/5 = 9948
fabric, parallel, grand, hyper, e-fabric

marcus · Nov 18, 2013

At noon 18 November (7520+8149+11919+12287+12563)/5 = 10488
fabric, e-grand, e-elegant, parallel, grand.

marcus · Nov 18, 2013

Code:

Midmonth averages of pop-string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
November 2013      10558

11433+12429+10141+9910+9554+9948+10488)/7 = 10558

Back in 1999-2001, looking at hires to first-time faculty positions, string accounted for about half of the total high energy physics (HEP) theory hires---about 9 jobs per year on average, out of total 18 per year. This declined to about a third in 2002-2004, and about a quarter of theory hires in 2005-2007--an average of about 6 per year.
Now the annual rate is more like 1/6 or 1/7. An increasing share of hires has been going to theoretical cosmology/astrophysics, including the crossover "astroparticle" area.

Hires per year, in string and in HEP-theory as a whole, including string.
First time faculty hires in theoretical particle physics (Usa + Canada)
(Annual rates averaged over 3 year intervals.)

Code:

period          1999-2001   2002-2004   2005-2007   2008-2010  2011-2013
HEP theory hires   18         24          23          13         13
string hires        9          8           6           2          2

Source: http://www.physics.utoronto.ca/~poppitz/Jobs94-08
http://particle.physics.ucdavis.edu/rumor/doku.php
For additional detail see post #403

Number of recent string papers making Inspire's top forty annual citations list
(some years omitted for brevity)

Code:

year           2001   2003   2005   2007   2009   2011   2012  
recent toppers   11     6      3      1      1      0      0

Here a paper is counted as recent if it appeared any time in the preceding five years. Annual topcite lists gauge the currently perceived significance of recent work by how often it was cited by other researchers during the given year.
Links to sources:
2001 http://inspirehep.net/info/hep/stats/topcites/2001/annual.html (eleven)
2003 http://inspirehep.net/info/hep/stats/topcites/2003/annual.html (six)
2005 http://inspirehep.net/info/hep/stats/topcites/2005/annual.html (three)
2007 http://inspirehep.net/info/hep/stats/topcites/2007/annual.html (one)
2009 http://inspirehep.net/info/hep/stats/topcites/2009/annual.html (one)
2011 http://inspirehep.net/info/hep/stats/topcites/2011/annual.html (zero)
2012 http://inspirehep.net/info/hep/stats/topcites/2012/annual.html (zero)

marcus · Nov 19, 2013

First-time faculty job listings in HEP-theory, for 2014. 14 openings posted so far. Applications deadlines mostly Dec-Jan.

Alabama http://inspirehep.net/record/1256870 (broad range)
Arizona http://www.physics.arizona.edu/~doug/latticejob_ad.txt (lattice gauge theory)
Buffalo http://inspirehep.net/record/1251342 (phenomenology)
LBNL https://academicjobsonline.org/ajo/jobs/3458 (particle data review + miscellaneous)
LBNL https://academicjobsonline.org/ajo/jobs/3635 (broad hep-th, hep-ph, astroparticle…)
MIT http://inspirehep.net/record/1258712 (broad range but includes string)
Oregon https://academicjobsonline.org/ajo/jobs/3180 ("connection with experimental")
Princeton http://inspirehep.net/record/1252755 (hep-th, cond-mat, or math-phys)
Santa Barbara https://recruit.ap.ucsb.edu/apply/JPF00230 (theoretical astrophysics or hep)
SUNY-Albany http://albany.interviewexchange.com...=513FA348AACE49E37831276F083C9CA4?JOBID=43418 (particle astrophysics and cosmology)
Texas A&M http://physics.tamu.edu/docs/positions/tenure-track_faculty_positions.pdf (astrophysics)
Texas A&M http://physics.tamu.edu/docs/positions/tenure-track_faculty_positions.pdf (cosmology/astrophysics)
Virginia Tech http://www.phys.vt.edu/jobs/Ads/CosmologySearch2014.pdf (cosmology)
York https://academicjobsonline.org/ajo/jobs/3266 (cosmology/particle astrophysics)

A noticeable share of the 14 job descriptions advertised so far for 2014 specified astrophysics/cosmology. None were specifically for string although that was mentioned in some cases as one of a broad range of possible research interests.

marcus · Nov 20, 2013

marcus · Nov 26, 2013

As of 26 Nov, essentially no change in research postings
137*365/330=152
603*365/330=667
A spot check of the pop-string market at 12:30 PM showed essentially no change from the mid month average recorded earlier: average salesrank of the stringy top five (hyper, grand, fabric, elegant, e-elegant) was 10487.

marcus · Dec 10, 2013

As of 10 Dec, research postings
142*365/344=151
639*365/344=678

marcus · Dec 16, 2013

As of 15 December:
365/349*145=152
365/349*650 = 680

marcus · Dec 19, 2013

Here's a simple Inspire search for keyword "quantum cosmology" papers that appeared 2009--present, ranked by cites. It gets 639 total:
http://inspirehep.net/search?ln=en&...search=Search&sf=&so=d&rm=citation&rg=25&sc=0
In the first 20 listed (as of now the most cited) four primarily involve non-loop approaches (#3, 5, 8, 15). It could be interesting to look further down the list and see what other QC approaches are getting research attention.

On the HEP-theory job scene (first-time faculty USA+Canada) 13 departments have posted job for 2014, for a total of 14 jobs. The deadlines for applications are mostly passed, or are in early January, which means departments are beginning to select "short lists". So far only one (Arizona) has the beginnings of a short list posted. The research interest they are looking for is lattice gauge theory. A substantial fraction of the other departments indicate the are looking for candidates specializing in astroparticle physics and/or cosmology. See posts #444 and 445 for more details.
http://particle.physics.ucdavis.edu/rumor/doku.php

Here's an update on loop and string research postings as of 19 December = 353/365
loop research by year (spin network, spin foam, loop gravity, loop quantum gravity, loop quantum cosmology)
2006 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (120 found)
2007 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (150 found)
2008 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (161 found)
2009 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (172 found)
2010 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (185 found)
2011 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (246 found)
2012 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (195 found)
2013 http://inspirehep.net/search?ln=en&...search=search&sf=&so=d&rm=citation&rg=25&sc=0 (153 annualized from 148 found)

string,membrane,ads/cft research by year
(search terms "string model", "membrane model" and "ads/cft correspondence")
2006 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1038 found)
2007 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1073 found)
2008 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1149 found)
2009 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1175 found)
2010 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1125 found)
2011 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (1112 found)
2012 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (857 found)
2013 http://inspirehep.net/search?ln=en&...&action_search=search&sf=&so=d&rm=&rg=25&sc=0 (675 annualized from 653 found)

http://www.calendardate.com/todays.htm

marcus · Dec 20, 2013

actually the count yesterday (19 Dec) was 150 rather than 148
365/353*150 = 155

So in preceding post I should have put "155 annualized from 150 found"

marcus · Jan 7, 2014

marcus · Jan 13, 2014

Since we've turned a page, I'll bring the salesrank record forward.

Code:

Midmonth averages of pop-string topfive salesranks
(recorded at Pacific noon on several days around the 15th of each month)
...
July 2009           6485
November 2009         NA
March 2010          7521
July 2010           8461
November 2010       2220
March 2011           349
July 2011           1257
November 2011       1243
March 2012          3235 
July 2012           2359
November 2012       7792 
March 2013          7396
July  2013          9168
November 2013      10558 
(13 January        12203)

Today, 13 Jan, the pop-string top five (fabric, elegant, grand, hidden, e-fabric) ranked
(6081+10578+11366+14906+18086)/5 for an average of 12203

marcus · Jan 14, 2014

ILQGS SEMINAR SCHEDULE
SPRING 2014

Code:

1/21  [B]Matter matters in asymptotically safe quantum gravity[/B]  P. Dona (Sissa)
2/4   TBA	 	 	 	 	 B. Dittrich (Perimeter)
2/18  TBA	 	 	 	 	 S. Steinhaus (Perimeter)
3/4  [B]Simplicity constraints in spin foam models[/B]  M. Geiller, S. Speziale (PSU,Marseille)
3/18 [B]S-matrices for General Boundary QFT on Anti de Sitter spacetime[/B]  M. Dohse (Morelia)
4/1  [B]Continuum limit and renormalization[/B]  	 L. Freidel (Perimeter)
4/15 [B] Linking canonical and covariant LQG[/B]  	 A. Zipfel (Erlangen)
4/29  [B]LQC and the very early universe[/B] I.Agullo, A.Barrau, G.Mena (LSU, Grenoble, Madrid)
5/13  [B]Hawking radiation in LQG[/B]	 	 	 J. Pullin (LSU)

marcus · Jan 16, 2014

Of the seminar talks we have titles for, so far, the first two are by Pietro Donà and by a two-person team of Marc Geiller and Simone Speziale. Here are a few relevant papers one might glance at to get an idea of the topic:
http://arxiv.org/abs/1311.2898
Matter matters in asymptotically safe quantum gravity
Pietro Donà, Astrid Eichhorn, Roberto Percacci
(Submitted on 12 Nov 2013, last revised 2 Dec 2013)
We investigate the compatibility of minimally coupled scalar, fermion and gauge fields with asymptotically safe quantum gravity, using nonperturbative functional Renormalization Group methods. We study d=4,5 and 6 dimensions and within certain approximations find that for a given number of gauge fields there is a maximal number of scalar and fermion degrees of freedom compatible with an interacting fixed point at positive Newton coupling. The bounds impose severe constraints on grand unification with fundamental Higgs scalars. Supersymmetry and universal extra dimensions are also generally disfavored. The standard model and its extensions accommodating right-handed neutrinos, the axion and dark-matter models with a single scalar are compatible with a fixed point.
22 pages, 18 figures, 4 tables

http://arxiv.org/abs/1112.1965
Testing the imposition of the Spin Foam Simplicity Constraints
Marc Geiller, Karim Noui
(Submitted on 8 Dec 2011, last revised 30 May 2012)
We introduce a three-dimensional Plebanski action for the gauge group SO(4). In this model, the B field satisfies quadratic simplicity constraints similar to that of the four-dimensional Plebanski theory, but with the difference that the B field is now a one-form. We exhibit a natural notion of "simple one-form", and identify a gravitational sector, a topological sector and a degenerate sector in the space of solutions to the simplicity constraints. Classically, in the gravitational sector, the action is shown to be equivalent to that of three-dimensional first order Riemannian gravity. This enables us to perform the complete spin foam quantization of the theory once the simplicity constraints are solved at the classical level, and to compare this result with the various models that have been proposed for the implementation of the constraints after quantization. In particular, we impose the simplicity constraints following the prescriptions of the so-called BC and EPRL models. We observe that the BC prescription cannot lead to the proper vertex amplitude. The EPRL prescription allows to recover the expected result when, in this three-dimensional model, it is supplemented with additional secondary second class constraints.
30 pages. 18 figures, Class.Quant.Grav. 29 (2012) 135008

http://arxiv.org/abs/1112.1961
Spin Foams and Canonical Quantization
Sergei Alexandrov, Marc Geiller, Karim Noui
(Submitted on 8 Dec 2011, last revised 19 Aug 2012)
This review is devoted to the analysis of the mutual consistency of the spin foam and canonical loop quantizations in three and four spacetime dimensions. In the three-dimensional context, where the two approaches are in good agreement, we show how the canonical quantization à la Witten of Riemannian gravity with a positive cosmological constant is related to the Turaev-Viro spin foam model, and how the Ponzano-Regge amplitudes are related to the physical scalar product of Riemannian loop quantum gravity without cosmological constant. In the four-dimensional case, we recall a Lorentz-covariant formulation of loop quantum gravity using projected spin networks, compare it with the new spin foam models, and identify interesting relations and their pitfalls. Finally, we discuss the properties which a spin foam model is expected to possesses in order to be consistent with the canonical quantization, and suggest a new model illustrating these results.
79 pages, SIGMA 8 (2012), 055

Spot checks on the current pop-string sales ranks:
15 Jan elegant, fabric, grand, hidden, e-elegant (15679+16482+16697+23981+31250)/5=20817.8
16 Jan fabric, grand, elegant, e-elegant, hidden (12104+14902+16896+21828+25208)/5=18187.6

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