Phase-fluctuating 3D Bose-Einstein condensates in elongated traps

被引：144

作者：

Petrov, DS

Shlyapnikov, GV

Walraven, JTM

机构：

[1] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands

[2] Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris 05, France

[3] Univ Paris 06, CNRS, Lab Kastler Brossel, F-75231 Paris 05, France

[4] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.87.050404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We find that in very elongated 3D trapped Bose gases, even at temperatures far below the BEC transition temperature T-c, the equilibrium state will be a 3D condensate with fluctuating phase (quasicondensate). At sufficiently low temperatures the phase fluctuations are suppressed and the quasicondensate turns into a true condensate. The presence of the phase fluctuations allows for extending thermometry of Bose-condensed gases well below those established in current experiments.

引用

页码：50404 / 1

页数：4

共 23 条

[11] Bose-Einstein condensation of atomic hydrogen [J].

Fried, DG ;

Killian, TC ;

Willmann, L ;

Landhuis, D ;

Moss, SC ;

Kleppner, D ;

Greytak, TJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (18) :3811-3814

[12] A well-collimated quasi-continuous atom laser [J].

Hagley, EW ;

Deng, L ;

Kozuma, M ;

Wen, J ;

Helmerson, K ;

Rolston, SL ;

Phillips, WD .

SCIENCE, 1999, 283 (5408) :1706-1709

[13] Evolution of a Bose gas in anisotropic time-dependent traps [J].

Kagan, Y ;

Surkov, EL ;

Shlyapnikov, GV .

PHYSICAL REVIEW A, 1997, 55 (01) :R18-R21

[14] Regimes of quantum degeneracy in trapped 1D gases [J].

Petrov, DS ;

Shlyapnikov, GV ;

Walraven, JTM .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3745-3749

[15] Bose-Einstein condensation in quasi-2D trapped gases [J].

Petrov, DS ;

Holzmann, M ;

Shlyapnikov, GV .

PHYSICAL REVIEW LETTERS, 2000, 84 (12) :2551-2555

[16]

Popov V N, 1983, FUNCTIONAL INTEGRALS

[17]

SENGSTOCK K, COMMUNICATION

[18]

SHEVCHENKO SI, 1992, SOV J LOW TEMP PHYS, V18, P223

[19] Three-body decay of a rubidium Bose-Einstein condensate [J].

Söding, J ;

Guéry-Odelin, D ;

Desbiolles, P ;

Chevy, F ;

Inamori, H ;

Dalibard, J .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 69 (04) :257-261

[20] Collisionless and hydrodynamic excitations of a Bose-Einstein condensate [J].

Stamper-Kurn, DM ;

Miesner, HJ ;

Inouye, S ;

Andrews, MR ;

Ketterle, W .

PHYSICAL REVIEW LETTERS, 1998, 81 (03) :500-503

← 1 2 3 →