Gravity has finite reach? (per Claudia de Rahm)

[rolnor]

TL;DR Summary

If so, there is no need for dark energy to explain the accelerated expansion of the universe?

I heard Claudia talking in a lecture about the possibility of gravity having finite reach. This could possibly explain observations of the universe expansion and "rule out" dark energy. How controversial is this? She mentions that another force has finite reach, the weak force.
https://profiles.imperial.ac.uk/c.de-rham/publications?respub-action=search.html

 

[phinds]

TL;DR Summary: If so, there is no need for dark energy to explain the accelerated expansion of the universe?

I heard Claudia talking in a lecture about the possibility of gravity having finite reach. This could possibly explain observations of the universe expansion and "rule out" dark energy. How controversial is this? She mentions that another force has finite reach, the weak force.
https://profiles.imperial.ac.uk/c.de-rham/publications?respub-action=search.html

Sounds like nonsense to me. Certainly a finite reach of gravity could not possibly explain dark energy. Do you even understand what dark energy DOES?

 

[Vanadium 50]

(1) "Claudia"? Like Cher or Madonna? Prince or Fabio?
(2) Do you have a reference? "I heard a lecture" is not something we can check.
(3) This is not GR. Now, people are free to propose another theory, but see point (2).
(4) In no world, is this QM, the section you posted it in.
(5) I am highly skeptical that this can simultaneously fit all the observational data, unless by "finite range" one means "I invert the data we have to find a force law that matches it", and even then it is tough.

 

[PeterDonis]

https://profiles.imperial.ac.uk/c.de-rham/publications?respub-action=search.html

This link is to a list of publications. Please link to the specific one you are referencing.

 

[PeterDonis]

I heard Claudia talking in a lecture

What lecture? Please give a specific reference.