Real-time Bose-Einstein condensation in a finite volume with a discrete spectrum

被引：13

作者：

Banyai, L ^{[1
]}

Gartner, P ^{[1
]}

机构：

[1] Univ Frankfurt, Inst Theoret Phys, D-6000 Frankfurt, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.88.210404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that Bose condensation in real time occurs in a finite system not only as an accumulation of the bosons in the ground state below a critical temperature, but also as a rapid enhancement of an arbitrary small symmetry breaking, followed by a very slow decay of the symmetry breaking order parameter from the almost ideal value to the vanishing equilibrium value. We show this analytically on an exactly soluble model and numerically on a model of noninteracting bosons in an oscillator potential.

引用

页码：4 / 210404

页数：4

共 6 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].

ANDERSON, MH ;

ENSHER, JR ;

MATTHEWS, MR ;

WIEMAN, CE ;

CORNELL, EA .

SCIENCE, 1995, 269 (5221) :198-201

[2] Condensation kinetics for bosonic excitons interacting with a thermal phonon bath [J].

Bányai, L ;

Gartner, P ;

Schmitt, OM ;

Haug, H .

PHYSICAL REVIEW B, 2000, 61 (13) :8823-8834

[3] Theory of Bose-Einstein condensation in trapped gases [J].

Dalfovo, F ;

Giorgini, S ;

Pitaevskii, LP ;

Stringari, S .

REVIEWS OF MODERN PHYSICS, 1999, 71 (03) :463-512

[4] BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS [J].

DAVIS, KB ;

MEWES, MO ;

ANDREWS, MR ;

VANDRUTEN, NJ ;

DURFEE, DS ;

KURN, DM ;

KETTERLE, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :3969-3973

[5] Trapping kinetics of excitons in a potential well -: art. no. 205113 [J].

Schmitt, A ;

Bányai, L ;

Haug, H .

PHYSICAL REVIEW B, 2001, 63 (20)

[6] Bose-Einstein condensation quantum kinetics for a gas of interacting excitons [J].

Schmitt, OM ;

Thoai, DBT ;

Gartner, LBP ;

Haug, H .

PHYSICAL REVIEW LETTERS, 2001, 86 (17) :3839-3842

← 1 →