Functional renormalization group for multi-orbital Fermi surface instabilities
نویسندگان
چکیده
منابع مشابه
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...
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Functional renormalization group (FRG) has become a diverse and powerful tool to derive effective low-energy scattering vertices of interacting many-body systems. Starting from a non-interacting expansion point of the action, the flow of the RG parameter Λ allows to trace the evolution of the effective one-particle and two-particle vertices towards low energies by taking into account the vertex...
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ژورنال
عنوان ژورنال: Advances in Physics
سال: 2013
ISSN: 0001-8732,1460-6976
DOI: 10.1080/00018732.2013.862020