All Questions
Tagged with fermi-liquids quasiparticles
6
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Quasi-particle distribution in Fermi liquid theory
In Fermi liquid theory, the quasi-particle is well-defined only near the Fermi surface. However, in calculating specific heat and compressibility, we also assume that the quasi-particle obeys the ...
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Can Fermi liquid be obtained by a canonical transformation?
The basic assumption of the Ferm-liquid theory is the one-to-one correspondence between the states of an interacting Fermi gas to those of a gas of non-interacting quasiparticles. The question is ...
- 60.3k
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Why do we have to introduce quasiparticles in the Fermi liquid theory
Why is it necessary in Fermi liquid theory to introduce quasiparticles? I understand the notion of system where someone can turn on the interactions slowly (i.e., adiabatically), but I do not ...
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Quasiparticle density of states : how to give it a meaning as the quasi particle are interacting?
There is something I don't understand about quasiparticles density of states.
I work with the book "Introduction to many body physics" from Coleman.
When he introduces the quasiparticle he does the ...
- 1,450
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Why quasiparticles do not decay in finite system in random phase approximation?
I have tried to apply the conventional recipe of calculating electron self-energy part $\Sigma$ in the random phase approximation (RPA) to the case of finite system and obtained $\mathrm{Im}\,\Sigma=0$...
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What is invalidated when turning on many body interactions in a crystal?
I have just started to think about strongly interacting particles and Fermi liquid theory, and I have two questions.
For non interacting particles moving in an potential field, we know that the ...
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