no code implementations • 29 Jan 2021 • Jacob A. Marks, Michael Schüler, Thomas P. Devereaux
We investigate topological signatures in the short-time non-equilibrium dynamics of symmetry protected topological (SPT) systems starting from initial states which break the protecting symmetry.
Strongly Correlated Electrons Quantum Physics
no code implementations • 4 Jan 2021 • Michael Schüler, Jacob A. Marks, Yuta Murakami, Chunjing Jia, Thomas P. Devereaux
We find that the dipole gauge provides a more accurate description than the velocity gauge in all cases.
Materials Science Mesoscale and Nanoscale Physics
1 code implementation • 30 Oct 2019 • Michael Schüler, Denis Golež, Yuta Murakami, Nikolaj Bittner, Andreas Hermann, Hugo U. R. Strand, Philipp Werner, Martin Eckstein
We present the open-source software package NESSi (The Non-Equilibrium Systems Simulation package) which allows to perform many-body dynamics simulations based on Green's functions on the L-shaped Kadanoff-Baym contour.
Computational Engineering, Finance, and Science
no code implementations • 2 Aug 2018 • Riku Tuovinen, Denis Golež, Michael Schüler, Philipp Werner, Martin Eckstein, Michael A. Sentef
A fast time propagation method for nonequilibrium Green's functions based on the generalized Kadanoff--Baym Ansatz (GKBA) is applied to a lattice system with a symmetry-broken equilibrium phase, namely an excitonic insulator.
Strongly Correlated Electrons
