25 citations · 25 across the 2 of their papers we have counts for
4 papers
Theory of the Loschmidt echo and dynamical quantum phase transitions in disordered Fermi systems
Tuomas I. Vanhala, Teemu Ojanen
In this work we develop the theory of the Loschmidt echo and dynamical phase transitions in non-interacting strongly disordered Fermi systems after a quench. In finite systems the…
Constrained Random Phase Approximation of the effective Coulomb interaction in lattice models of twisted bilayer graphene
Tuomas I. Vanhala, Lode Pollet
Recent experiments on twisted bilayer graphene show the urgent need for establishing a low-energy lattice model for the system. We use the constrained random phase approximation to…
Magnetization, d-wave superconductivity and non-Fermi liquid behavior in a crossover from dispersive to flat bands
Pramod Kumar, Tuomas I. Vanhala, Päivi Törmä
We explore the effect of inhomogeneity on electronic properties of the two-dimensional Hubbard model on a square lattice using dynamical mean-field theory (DMFT). The inhomogeneity…
Temperature and doping induced instabilities of the repulsive Hubbard model on Lieb lattice
Pramod Kumar, Tuomas I. Vanhala, Päivi Törmä
The properties of a phase at finite interactions can be significantly influenced by the underlying dispersion of the non-interacting Hamiltonian. We demonstrate this by studying th…