Quantum phases of dimerized and frustrated Heisenberg spin chains with s=1/2, 1 and 3/2: an entanglement entropy and fidelity study

Goli, Durga Prasad VML and Sahoo, Shaon and Ramasesha, S and Sen, Diptiman (2013) Quantum phases of dimerized and frustrated Heisenberg spin chains with s=1/2, 1 and 3/2: an entanglement entropy and fidelity study. In: Journal of Physics: Condensed Matter, 25 (12). 125603_1-125603_11.

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Abstract

We study here different regions in phase diagrams of the spin-1/2, spin-1 and spin-3/2 one-dimensional antiferromagnetic Heisenberg systems with frustration (next-nearest-neighbor interaction J(2)) and dimerization (delta). In particular, we analyze the behaviors of the bipartite entanglement entropy and fidelity at the gapless to gapped phase transitions and across the lines separating different phases in the J(2)-delta plane. All the calculations in this work are based on numerical exact diagonalizations of finite systems.

Item Type:	Journal Article
Publication:	Journal of Physics: Condensed Matter
Publisher:	IOP Publishing Ltd
Additional Information:	Copyright of this article belongs to IOP Publishing Ltd.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Physical & Mathematical Sciences > Centre for High Energy Physics Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Apr 2013 06:54
Last Modified:	10 Apr 2013 06:54
URI:	http://eprints.iisc.ac.in/id/eprint/46304

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