Multiple condensed phases in attractively interacting Bose systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F10%3A10071365" target="_blank" >RIV/00216208:11320/10:10071365 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/10:00342189

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Multiple condensed phases in attractively interacting Bose systems

Original language description

We investigate a Bose gas with finite-range interaction using a scheme to eliminate unphysical processes in the T-matrix approximation. In this way the corrected T-matrix becomes suitable to calculate properties below the critical temperature. For attractive interaction, an Evans-Rashid transition occurs between a quasi-ideal Bose gas and a Bardeen-Cooper-Schrieffer-like phase with a gap dispersion. The gap decreases with increasing density and vanishes at a critical density where the single-particle dispersion becomes linear for small momenta, indicating Bose-Einstein condensation. The investigation of the pressure shows, however, that the mentioned quantum phase transitions might be inaccessible due to a preceding first-order transition.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

New Journal of Physics

ISSN

1367-2630

e-ISSN

—

Volume of the periodical

2010

Issue of the periodical within the volume

12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

—

UT code for WoS article

000275354600008

EID of the result in the Scopus database

—