Functional renormalization group approach to correlated fermion systems
نویسندگان
چکیده
منابع مشابه
A Functional Renormalization Group Approach to Systems with Long-range Correlated Disorder
We studied the statics and dynamics of elastic manifolds in disordered media with long-range correlated disorder using functional renormalization group (FRG). We identified different universality classes and computed the critical exponents and universal amplitudes describing geometric and velocity-force characteristics. In contrast to uncorrelated disorder, the statistical tilt symmetry is brok...
متن کاملFunctional renormalization group approach to zero-dimensional interacting systems
We apply the functional renormalization group method to the calculation of dynamical properties of zero-dimensional interacting quantum systems. As case studies we discuss the anharmonic oscillator and the single impurity Anderson model. We truncate the hierarchy of flow equations such that the results are at least correct up to second order perturbation theory in the coupling. For the anharmon...
متن کاملDensity matrix renormalization group approach to two-fluid open many-fermion systems
J. Rotureau,1,2,3 N. Michel,4,5 W. Nazarewicz,1,2,6 M. Płoszajczak,7 and J. Dukelsky8 1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA 2Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Joint Institute for Heavy Ion Research, Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831, USA 4Department of...
متن کاملRenormalization group approach to spin glass systems
A renormalization group transformation suitable for spin glass models and, more generally, for disordered models, is presented. The procedure is non-standard in both the nature of the additional interactions and the coarse graining transformation, that is performed on the overlap probability measure. Universality classes are thus naturally defined on a large set of models, going from Z 2 and Ga...
متن کاملEffective-action approach to strongly correlated fermion systems
We construct a functional for the single-particle Green’s function, which is a variant of the standard BaymKadanoff functional. The stability of the stationary solutions to the functional is directly related to aspects of the irreducible particle hole interaction through the Bethe-Salpeter equation. A startling aspect of this functional is that it allows a simple and rigorous derivation of both...
متن کاملذخیره 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: Reviews of Modern Physics
سال: 2012
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.84.299