Bosons Definition and 223 Threads

What distinguishes Fermions form Bosons in Feynman diagrams?

Mesons are bosons, but are all bosons mesons e.g. intermediate vector bosons (w and z bosons in the weak interaction)?

I don't really understand what it means to call a non-fundamental object a boson. For example, the helium atom. Its made of fermions, so wouldn't that prevent it from acting like a boson? If you can't have two protons, neutrons, or electrons occupy the same state, how could you have two...

Homework Statement Show that when tree identical quadrupole phonons (boson) are coupled togheter, only states with total angular momentum 0,2,4 and 6 are allowed. The Attempt at a Solution I know "how" to do it, but i do not know how to couple three angular momenta. In the case of...

Homework Statement Consider two noninteracting particles p and q each with mass m in a cubical box od size a. Assume the energy of the particles is E = \frac{3 \hbar^2 \pi^2}{2ma^2} + \frac{6\hbar^2 pi^2}{2ma^2} Using the eigenfunctions \psi_{n_{x},n_{y},n_{z}} (x_{p},y_{p},z_{p}) and...

Bosons, Fermions and ?? I have heard in wikipedia (a joke?? ) that appart from Bosons and Fermions (types of particles) there were another kind of 'Probabilistic distribution' ? i don't know how it was called but if we have the number of particles. <n(T)>=\frac{1}{exp(\hbar \omega )-a}...

For my diploma thesis I must provide a calculation that reproduces the results given on page 46 of the paper hep-ph/0309342 . For those who do not want to look it up, I briefly explain what it is about: It concerns the two-body scattering processes (1) N + V => L + H, (2) N + L => V + H, (3) N...

Show that the symmetric combination of two single particle wavefunction Gab(r1,r2)=Ga(r1)Gb(r2)+Ga(r2)Gb(r1) where G is psi ( i don't have symbol on my computer) displays the exchange symmetry characteristics of bosons (equation G(r1,r2)=G(r2,r1)) Is it possible for two bosons...

Everytime a photon leaves an atom, the energy of that photon is matched by the increase in binding energy of that atom - right? If so would the change of energy in the form of radiation be equivalent to the change of binding energy? Is the aggregate binding energy of particles in the...

Hi, I am having trouble understanding these concepts. I checked out some websites but it still doesn't help. First of all what's the main postulate? That there exist 2 different kind of particles: bosons and fermions? What are their fundamental definitions which lead to the fact that an integer...

I'm having some difficulties with the following problem: Consider two (spinless)free bosons in a box of volume V with periodic boundary conditions. Let the momenta of the bosons be p and q. a) Write down the normalized wavefunction for p is not equal to q and p = q. \Psi_{pq}(r1,r2) I...

Do we know for certain that bosons exist? Do we have experimental evidence that bosons exist? How in the world can bosons be real and yet not obey the pauli exclusion principle? Does the fact that bosons do not obey the pauli exclusion principle mean that it is impossible to tell one...

A typical stat mech. question is the following: If I have 5 bosons and energy E to divide among the bosons, what is the total number of possible configurations? I can't remember this answer, so if someone reading this can post it that would be appreciated. Now, I want to ask a slightly...

just posted on arxiv http://arxiv.org/abs/hep-ph/0507144

Hi, In what way the theorethical Higgs bosons (if experimentally detected) will contribute to the Theory of Everything ? Thanks

OK, this is so unlike me to advertize a theory activity on Supersymmetry, etc. But as a community service, I thought I should point out to those who are interested, that the Argonne Theory Institute will be starting it's Theory Institute 2005 workshop titled "Supersymmetry, Extra Dimensions, and...

Hello all, from Marlon's journal, I read the question "DO YOU KNOW WHY FORCE CARRIERS ARE ALWAYS BOSONS ? WHY DON'T WE HAVE GAUGE FERMIONS ?" Can anyone answer this question? :redface:

A force carrier emitted over a very short distance between two particles would have a very large mass.Could it have a mass large enough to turn the two body particle system into a three body system?

I've heard quite abit of things about bosons and am quite confused. The biggest thing which distinguishes fermions from bosons, would be Pauli's exclusion principle. But I've also heard things about bosons having half- integer, while fermions have interger spin, among many others. I've also...

The Standard Model defines Bosons, along with Fermions, as Fundamental Particles. At the same time, Mesons, which include Bosons, are supposed to be a compound made up of a quark and an anti-quark. So, which is it? Is a Boson a fundamental particle or a compound (ie.Hadron)?

Do boson anihilate? This question was raised in my mind by a post on the Strings, Branes et al. board that had a link to a text describing gravitons anihilating and producing graviphotons. Aside from what you think of this model, what is the skinny on bosons anihilating? Photons don't...

Hi all, what are Bosons? What are the types of bosons? I know a bit about Z Boson and W boson. Please explain a bit more. -Benzun All For God.

Why is it that when normal ordering the terms in the Hamiltonian for bosons, the commutation rules are ignored, but when normal ordering fermion operators the anti-commutation rules are used to justify a change in sign?