212 citations · 1.5k across the 55 of their papers we have counts for
5 papers · 1 filter
Emergent Weyl nodes and Fermi arcs in a Floquet Weyl semimetal
Leda Bucciantini, Sthitadhi Roy, Sota Kitamura +1
When a Dirac semimetal is subject to a circularly polarized laser, it is predicted that the Dirac cone splits into two Weyl nodes and a nonequilibrium transient state called the Fl…
Disordered Chern insulator with a two step Floquet drive
Sthitadhi Roy, G. J. Sreejith
We explore the physics of a Chern insulator subjected to a two step Floquet drive. We analytically obtain the phase diagram and show that the system can exhibit different topologic…
Locating topological phase transitions using nonequilibrium signatures in local bulk observables
Sthitadhi Roy, Roderich Moessner, Arnab Das
Topological quantum phases cannot be characterized by local order parameters in the bulk. In this work however, we show that signatures of a topological quantum critical point do r…
Chern numbers and chiral anomalies in Weyl butterflies
Sthitadhi Roy, Michael Kolodrubetz, Joel E. Moore +1
The Hofstadter butterfly of lattice electrons in a strong magnetic field is a cornerstone of condensed matter physics, exploring the competition between periodicities imposed by th…
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…