Degenerate fermion gas heating by hole creation

被引：51

作者：

Timmermans, E ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.87.240403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Loss processes that remove particles from an atom trap leave holes behind in the single particle distribution if the trapped gas is a degenerate fem-lion system. The appearance of holes increases the temperature and we show that the heating (i) is significant if the initial temperature is well below the Fermi temperature T-F, and (ii) increases the temperature to T greater than or equal to T-F/4 after half of the system's lifetime, regardless of the initial temperature. The hole heating has important consequences for the prospect of observing Cooper pairing in atom traps.

引用

页码：240403 / 240403

页数：4

共 20 条

[1] Triplet s-wave resonance in Li-6 collisions and scattering lengths of Li-6 and Li-7 [J].

Abraham, ERI ;

McAlexander, WI ;

Gerton, JM ;

Hulet, RG ;

Cote, R ;

Dalgarno, A .

PHYSICAL REVIEW A, 1997, 55 (05) :R3299-R3302

[2] 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

[3] EVIDENCE OF BOSE-EINSTEIN CONDENSATION IN AN ATOMIC GAS WITH ATTRACTIVE INTERACTIONS [J].

BRADLEY, CC ;

SACKETT, CA ;

TOLLETT, JJ ;

HULET, RG .

PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1687-1690

[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] Onset of Fermi degeneracy in a trapped atomic gas [J].

DeMarco, B ;

Jin, DS .

SCIENCE, 1999, 285 (5434) :1703-1706

[6] CROSSOVER FROM BCS TO BOSE SUPERCONDUCTIVITY - TRANSITION-TEMPERATURE AND TIME-DEPENDENT GINZBURG-LANDAU THEORY [J].

DEMELO, CARS ;

RANDERIA, M ;

ENGELBRECHT, JR .

PHYSICAL REVIEW LETTERS, 1993, 71 (19) :3202-3205

[7] Recombination of three atoms in the ultracold limit [J].

Esry, BD ;

Greene, CH ;

Burke, JP .

PHYSICAL REVIEW LETTERS, 1999, 83 (09) :1751-1754

[8] Three-body recombination of ultracold atoms to a weakly bound s level [J].

Fedichev, PO ;

Reynolds, MW ;

Shlyapnikov, GV .

PHYSICAL REVIEW LETTERS, 1996, 77 (14) :2921-2924

[9]

GORKOV LP, 1961, SOV PHYS JETP-USSR, V13, P1018

[10] Influence of induced interactions on the superfluid transition in dilute Fermi gases [J].

Heiselberg, H ;

Pethick, CJ ;

Smith, H ;

Viverit, L .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2418-2421

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