Introducing physical relaxation terms in Bloch equations

Authors
Bidegaray, B Bourgeade, A Reignier, D
Citation
B. Bidegaray et al., Introducing physical relaxation terms in Bloch equations, J COMPUT PH, 170(2), 2001, pp. 603-613
Citations number
10
Categorie Soggetti
Physics
Journal title
JOURNAL OF COMPUTATIONAL PHYSICS
ISSN journal
00219991 → ACNP
Volume
170
Issue
2
Year of publication
2001
Pages
603 - 613
Database
ISI
SICI code
0021-9991(20010701)170:2<603:IPRTIB>2.0.ZU;2-2
Abstract
The Bloch equation models the evolution of the state of electrons in matter described by a Hamiltonian. To model more physical phenomena we have to in troduce phenomenological relaxation terms. The introduction of these terms has to conserve some positiveness: properties. The aim of this paper is to review possible relaxation models and to provide insight into how to discre tize them properly in view of numerical computations. (C) 2001 Academic Pre ss.