Decoupling a collective degree of freedom from a model for tunneling in many-particle systems

Autor:	Abraham Klein, Giu Do Dang, Aurel Bulgac
Rok vydání:	1988
Předmět:	Physics Many-body problem Particle system Vibration Nuclear and High Energy Physics symbols.namesake Amplitude Classical mechanics Degrees of freedom (statistics) symbols Decoupling (cosmology) Adiabatic process Hamiltonian (quantum mechanics)
Zdroj:	Physical Review C. 37:2156-2161
ISSN:	0556-2813
DOI:	10.1103/physrevc.37.2156
Popis:	The theory of large amplitude adiabatic motion is applied to a recently proposed model of tunneling in many body systems. We construct the corresponding collective Hamiltonian and study the applicability of the decoupling procedure, both by comparing the results of the large amplitude theory with exact results and by studying different measures of the decoupling procedure, including the stability of the collective motion against noncollective vibrations. We also analyze briefly another approximation scheme especially suited for the problem at hand. The theory of large amplitude collective motion provides an extremely accurate description of the collective motion and of the tunneling process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::943199360241eb44e2e1011a09ed7981 https://doi.org/10.1103/physrevc.37.2156 Zobrazit plný text záznamu