Renormalization group and Fermi liquid theory

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fermi liquid theory: a renormalization group point of view

We show how Fermi liquid theory results can be systematically recovered using a renormalization group (RG) approach. Considering a two-dimensional system with a circular Fermi surface, we derive RG equations at one-loop order for the two-particle vertex function Γ in the limit of small momentum (Q) and energy (Ω) transfer and obtain the equation which determines the collective modes of a Fermi ...

متن کامل

Continuous renormalization for fermions and Fermi liquid theory

I derive a Wick ordered continuous renormalization group equation for fermion systems and show that a determinant bound applies directly to this equation. This removes factorials in the recursive equation for the Green functions, and thus improves the combinatorial behaviour. The form of the equation is also ideal for the investigation of manyfermion systems, where the propagator is singular on...

متن کامل

The Fermi Liquid as a Renormalization Group Fixed Point

par Guennadi Chitov Thèse présentée au département de Physique en vue de l'obtention du grade de Docteurès sciences (Ph. SUMMARY The renormalization-group (RG) method is applied to study interacting fermions at finite temperature. A model based on the ψ 4-Grassmann effective action with SU(N)-invariant short-range interaction and a rotationally invariant Fermi surface in spatial dimensions d = ...

متن کامل

Renormalization group theory for the imbalanced Fermi gas.

We formulate a Wilsonian renormalization group theory for the imbalanced Fermi gas. The theory is able to recover quantitatively well-established results in both the weak-coupling and the strong-coupling (unitarity) limits. We determine for the latter case the line of second-order phase transitions of the imbalanced Fermi gas and, in particular, the location of the tricritical point. We obtain ...

متن کامل

Renormalization-group approach to the theory of the Fermi surface.

we describe an approach to the theory of the Fermi surface based on the renormalization group. A notion of quasi particle appears naturally in the theory. The beta function is finite to all orders of perturbation theory and we compute and discuss it to second order. The normality of the Fermi surface is linked to the repulsivity of the quasi particle potential: the remarkable cancellations that...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Advances in Physics

سال: 1994

ISSN: 0001-8732,1460-6976

DOI: 10.1080/00018739400101525