1 citations · 1 across the 3 of their papers we have counts for
6 papers
Green functions in the renormalized many-body perturbation theory
Václav Janiš
I review the way the many-body Green functions are used to renormalize the perturbation theory of correlated fermions. The Green functions are introduced to implement systematicall…
Dynamical Mean-Field Theory of Disordered Electrons: Coherent Potential Approximation and Beyond
Václav Janiš
I review the quantum theory of the electron moving in a random environment. First, the quantum mechanics of individual particles scattered on a random potential is discussed. The q…
Curie-Weiss susceptibility in strongly correlated electron systems
Václav Janiš, Antonín Klíč, Jiawei Yan +1
The genesis of the Curie-Weiss magnetic response observed in most transition metals that are Fermi liquids at low temperatures has been an enigma for decades and has not yet been f…
Kondo Temperature and High to Low Temperature Crossover in Quantum Dots
Václav Janiš, Antonín Klíč
Kondo temperature is standardly defined from the local zero-temperature susceptibility in the regime of strong electron correlations as a new scale controlling the low-temperature…
Strongly correlated electrons: Analytic mean-field theories with two-particle self-consistency
Václav Janiš, Peter Zalom, Vladislav Pokorný +1
A two-particle self-consistency is rarely part of mean-field theories. It is, however, essential for avoiding spurious critical transitions and unphysical behavior. We present a ge…
Introduction to Mean-Field Theory of Spin Glass Models
Václav Janiš
We discuss the mean-field theory of spin-glass models with frustrated long-range random spin exchange. We analyze the reasons for breakdown of the simple mean-field theory of Sherr…