Kinetic theory of resonance and relaxation in spin systems I: Kinetic equations for two-level open systems

✍ Scribed by Jerzy Łuczka

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 772 KB
• Volume: 101
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(80)90194-6

✦ Synopsis

The dynamics of the paramagnetic spin (S = I/2) system, treated as an open system interacting with an alternating magnetic field and a lattice (phonons), is considered. Starting with the generalized kinetic equations, the non-Markovian equations describing the Zeeman, the dipole interaction and the resonant phonon subsystems are obtained with accuracy to terms of the second order in a weak perturbation. The passage from a set of integro-differential equations (so called equations with memory) to equations in the Markovian limit is studied.

The manner of transition to equations in the high-temperature approximation is explicitly exhibited. The connections with other equations are discussed.