288 citations · 608 across the 20 of their papers we have counts for
20 papers
Diffusive transport in a quasiperiodic Fibonacci chain: absence of many-body localization at small interactions
Vipin Kerala Varma, Marko Znidaric
We study high-temperature magnetization transport in a many-body spin-1/2 chain with on-site quasiperiodic potential governed by the Fibonacci rule. In the absence of interactions…
Length scales in the many-body localized phase and their spectral signatures
Vipin Kerala Varma, Abhishek Raj, Sarang Gopalakrishnan +2
We compute and compare the decay lengths of several correlation functions and effective coupling constants in the many-body localized (MBL) phase. To this end, we consider the dist…
Asymmetry in energy versus spin transport in certain interacting, disordered systems
Juan Jose Mendoza-Arenas, Marko Znidaric, Vipin Kerala Varma +3
We study energy transport in XXZ spin chains driven to nonequilibrium configurations by thermal reservoirs of different temperatures at the boundaries. We discuss the transition be…
Anomalous and regular transport in spin 1/2 chains: AC conductivity
Ramsés J. Sánchez, Vipin Kerala Varma, Vadim Oganesyan
We study magnetization transport in anisotropic spin- chains governed by the integrable XXZ model with and without integrability-breaking perturbations at high temperatures ($…
Massively parallel implementation and approaches to simulate quantum dynamics using Krylov subspace techniques
Marlon Brenes, Vipin Kerala Varma, Antonello Scardicchio +1
We have developed an application and implemented parallel algorithms in order to provide a computational framework suitable for massively parallel supercomputers to study the unita…
Finite-size anomalies of the Drude weight: role of symmetries and ensembles
Ramsés J. Sánchez, Vipin Kerala Varma
We revisit the subtelties of computing the high temperature spin stiffness of the spin- XXZ chain using exact diagonalization to analyze its dependence on system symmetrie…