20 citations · 36 across the 17 of their papers we have counts for
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cond-mat.str-el2017★ 20 cited
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 ($…
cond-mat.str-el2017★ 7 cited
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…
cond-mat.str-el2015★ 3 cited
Interaction-induced Drude weight enhancement in frustrated systems
Vipin Kerala Varma, Ramsés Sánchez
We investigate the effect of next nearest-neighbour hopping on the zero temperature Drude weight or superfluidity in mesoscopic one-dimensional systems of (a) single particle with…