Issue
Europhys. Lett.
Volume 73, Number 6, March 2006
Page(s) 833 - 838
Section The physics of elementary particles and fields
DOI http://dx.doi.org/10.1209/epl/i2005-10478-2
Published online 10 February 2006
Europhys. Lett., 73 (6), pp. 833-838 (2006)
DOI: 10.1209/epl/i2005-10478-2

Relation between concurrence and Berry phase of an entangled state of two spin- $\mth{(1/2)}$ particles

B. Basu

Physics and Applied Mathematics Unit, Indian Statistical Institute Kolkata-700108, India

banasri@isical.ac.in

received 21 October 2005; accepted in final form 24 January 2006
published online 10 February 2006

Abstract
We have studied here the influence of the Berry phase generated due to a cyclic evolution of an entangled state of two spin-(1/2) particles. It is shown that the measure of formation of entanglement is related to the cyclic geometric phase of the individual spins.

PACS
11.10.-z - Field theory.
03.65.Vf - Phases: geometric; dynamic or topological.
03.67.Mn - Entanglement production, characterization, and manipulation.

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