RIGOROUS CALCULATION OF THE COLLECTIVE EXCITATION SPECTRUM IN A MEAN-FIELD MODEL

Authors
MOMONT B
Citation
B. Momont, RIGOROUS CALCULATION OF THE COLLECTIVE EXCITATION SPECTRUM IN A MEAN-FIELD MODEL, Journal of mathematical physics, 34(12), 1993, pp. 5549-5559
Citations number
12
Categorie Soggetti
Mathematical Method, Physical Science","Physycs, Mathematical
Journal title
Journal of mathematical physics → ACNP
ISSN journal
00222488
Volume
34
Issue
12
Year of publication
1993
Pages
5549 - 5559
Database
ISI
SICI code
0022-2488(1993)34:12<5549:RCOTCE>2.0.ZU;2-B
Abstract
The dynamics of macroscopic density fluctuations is studied in the Ove rhauser model. The spectral decomposition of the time derivative on th e Hilbert space of macroscopic density fluctuations is completely dete rmined. The spectrum of the collective excitations is rigorously calcu lated.