200 citations · 583 across the 31 of their papers we have counts for
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quant-ph2013★ 10 cited
Block entropy for Kitaev-type spin chains in a transverse field
V. Subrahmanyam
Block entanglement entropy in the ground state of a quantum spin chain is investigated. The spins have Kitaev-type nearest-neighbor interaction, of strength J_x or J_y, through eit…
quant-ph2013
Distribution of quantum discord in Heisenberg Antiferromagnets
Aritra Kundu, V. Subrahmanyam
The quantum discord, which quantifies the amount of quantum correlations present between parts of a system, is investigated for antiferromagnetic spin systems. The discord for a pa…
cond-mat.str-el2013★ 5 cited
Block entanglement and fluctuations in finite size correlated electron systems
Archak Purkayastha, V. Subrahmanyam
The block entanglement entropy and fluctuations are investigated in one dimension in finite size correlated electron systems using the Gutzwiller wave function as a prototype corre…