7 papers
Topological signatures in the quench dynamics of periodically driven quantum systems
Ashutosh Dubey, Hironmoy Pratihar, Diptiman Sen +1
We study the quench dynamics of graphene, without and with a staggered mass, following the sudden switch-on of circularly polarized light where coupling to a fermionic bath is also…
Topological zero-reflection points in multi-terminal quantum wire junctions
Abhiram Soori, Udit Khanna, Diptiman Sen
We study scattering in noninteracting multi-terminal quantum wire junctions and show that junctions with dihedral symmetry can exhibit exact zero-reflection points for te…
Refraction-induced transverse charge transport
Ronika Sarkar, Arka Bandyopadhyay, Awadhesh Narayan +1
We introduce a mechanism that produces a Hall-like transverse response in time-reversal-invariant materials, driven entirely by geometric effects. Specifically, we demonstrate that…
Floquet multiple exceptional points with higher-order skin effect
Gaurab Kumar Dash, Subhendu Kumar Patra, Diptiman Sen +1
We investigate the rich non-equilibrium physics arising in periodically driven open quantum systems, specifically those realized within microcavity resonators, whose dynamics are g…
Metric response of relative entropy: A universal indicator of quantum criticality
Pritam Sarkar, Diptiman Sen, Arnab Sen
The information-geometric origin of fidelity susceptibility and its utility as a universal probe of quantum criticality in many-body settings have been widely discussed. Here we ex…
Topological phase transition through tunable nearest-neighbor interactions in a one-dimensional lattice
Rajashri Parida, Diptiman Sen, Tapan Mishra
We investigate the phase diagram of a one-dimensional model of hardcore bosons or spinless fermions with tunable nearest-neighbor interactions. By introducing alternating repulsive…
Phases and phase transitions in a dimerized spin- XXZ chain
Harsh Nigam, Ashirbad Padhan, Diptiman Sen +2
We revisit the phase diagram of the dimerized XXZ spin- chain with nearest-neighbor couplings which was studied numerically in Phys. Rev. B 106, L201106 (2022). The mo…