Spin relaxation in terms of thermo field dynamics

T. Tominaga, M. Ban, T. Arimitsu, J. Pradko and H. Umezawa

Physica A: Statistical Mechanics and its Applications, 1988, vol. 149, issue 1, 26-48

Abstract: An axiomatic formulation of the thermo field dynamics (TFD) for spin systems is performed, and is applied to the relaxation process of single spin-12. The spin relaxation accompanied with a change of symmetry of the system is also investigated. The time evolution of an order parameter is obtained within the semi-free approximation.

Date: 1988
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:149:y:1988:i:1:p:26-48

DOI: 10.1016/0378-4371(88)90207-5

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