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Titolo:
The one-particle energy spectrum of weakly coupled quantum rotators
Autore:
Angelescu, N; Minlos, RA; Zagrebnov, VA;
Indirizzi:
Natl Inst Phys & Nucl Engn, Dept Theoret Phys, Bucharest, Romania Natl Inst Phys & Nucl Engn Bucharest Romania t Phys, Bucharest, Romania Russian Acad Sci, Inst Problems Informat Transmiss, Moscow 101447, Russia Russian Acad Sci Moscow Russia 101447 t Transmiss, Moscow 101447, Russia Univ Aix Marseille 2, Dept Phys, F-13288 Marseille, France Univ Aix Marseille 2 Marseille France F-13288 F-13288 Marseille, France Univ Aix Marseille 2, CNRS, Ctr Phys Theor, F-13288 Marseille, France UnivAix Marseille 2 Marseille France F-13288 F-13288 Marseille, France
Titolo Testata:
JOURNAL OF MATHEMATICAL PHYSICS
fascicolo: 1, volume: 41, anno: 2000,
pagine: 1 - 23
SICI:
0022-2488(200001)41:1<1:TOESOW>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Angelescu, N Natl Inst Phys & Nucl Engn, Dept Theoret Phys, POB MG-6, Bucharest, Romania Natl Inst Phys & Nucl Engn POB MG-6 Bucharest Romania mania
Citazione:
N. Angelescu et al., "The one-particle energy spectrum of weakly coupled quantum rotators", J MATH PHYS, 41(1), 2000, pp. 1-23

Abstract

The ground state of a lattice model of weakly interacting quantum rigid rotators is analyzed by the cluster expansion method applied to its Feynman-Kac representation. The Hamiltonian of the infinite crystal in the ground state is shown to have a branch of absolutely continuous spectrum separated by gaps from the rest of the spectrum, describing the one-particle excitations. (C) 2000 American Institute of Physics. [S0022-2488(00)01401-8].

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Documento generato il 04/12/20 alle ore 19:26:18