247 citations · 1.9k across the 43 of their papers we have counts for
8 papers · 1 filter
One-particle density matrix characterization of many-body localization
Soumya Bera, Thomas Martynec, Henning Schomerus +2
We study a model of interacting fermions in one dimension subject to random, uncorrelated onsite disorder. The model realizes an interaction-driven quantum phase transition between…
Density propagator for many-body localization: finite size effects, transient subdiffusion, and exponential decay
Soumya Bera, Giuseppe De Tomasi, Felix Weiner +1
We investigate charge relaxation in quantum-wires of spin-less disordered fermions (-model). Our observable is the time-dependent density propagator, ,…
Quantum Mutual Information as a Probe for Many-Body Localization
Giuseppe De Tomasi, Soumya Bera, Jens H. Bardarson +1
We demonstrate that the quantum mutual information (QMI) is a useful probe to study many-body localization (MBL). First, we focus on the detection of a metal--insulator transition…
Anatomy of quantum critical wave functions in dissipative impurity problems
Zach Blunden-Codd, Soumya Bera, Benedikt Bruognolo +5
Quantum phase transitions reflect singular changes taking place in a many-body ground state, however, computing and analyzing large-scale critical wave functions constitutes a form…
Generalized Dyson model: nature of zero mode and its implication in dynamics
Giuseppe De Tomasi, Sthitadhi Roy, Soumya Bera
We study the role of the anomalous state in dynamical properties of non-interacting fermionic chains with chiral symmetry and correlated bond disorder in one dimension. These…
Graphene with vacancies: supernumerary zero modes
Norman Weik, Johannes Schindler, Soumya Bera +2
The density of states, , of graphene is investigated within the tight binding (Hückel) approximation in the presence of vacancies. They induce a non-vanishing density o…