NONADIABATIC BERRY PHASE OF A 2-STATE SYSTEM AND NONSTATIONARITY OF QUANTUM STATES

Authors
LEI YA ZENG JY
Citation
Ya. Lei et Jy. Zeng, NONADIABATIC BERRY PHASE OF A 2-STATE SYSTEM AND NONSTATIONARITY OF QUANTUM STATES, Communications in Theoretical Physics, 27(4), 1997, pp. 435-442
Citations number
22
Categorie Soggetti
Physics
Journal title
Communications in Theoretical Physics → ACNP
ISSN journal
02536102
Volume
27
Issue
4
Year of publication
1997
Pages
435 - 442
Database
ISI
SICI code
0253-6102(1997)27:4<435:NBPOA2>2.0.ZU;2-L
Abstract
The nonadiabatic Berry phases in the magnetic resonance under various initial conditions are investigated and compared with the adiabatic Be rry phase. The general formalism for calculating the nonadiabatic Berr y phase of a two-state system in terms of the expansion of instantaneo us energy eigenstates is presented. Some numerical calculations and di scussions are made. The Berry phase of a two-state system under an imp ulsive interaction is addressed.