Spin relaxation in terms of thermo field dynamics

✍ Scribed by T. Tominaga; M. Ban; T. Arimitsu; J. Pradko; H. Umezawa

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 899 KB
• Volume: 149
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(88)90207-5

✦ Synopsis

An axiomatic formulation of the therm0 field dynamics (TFD) for spin systems is performed. and is applied to the relaxation process of single spin-1. 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.