Universal Equation of State of a Unitary Fermionic Gas

被引：10

作者：

Bhaduri, R. K. ^{[1
]}

van Dijk, W. ^{[1
,2
]}

Murthy, M. V. N. ^{[3
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] Redeemer Univ Coll, Dept Phys, Ancaster, ON L9K 1J4, Canada

[3] Inst Math Sci, Madras 600113, Tamil Nadu, India

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 26期

基金：

加拿大自然科学与工程研究理事会;

关键词：

THERMODYNAMICS;

D O I：

10.1103/PhysRevLett.108.260402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is suggested that for a Fermi gas at unitarity, the two-body bond plays a special role. We propose an equation of state using an ansatz relating the interaction part of the l-body cluster to its two-body counterpart. This allows a parameter-free comparison with the recently measured equation of state by the ENS group. The agreement between the two over a range of fugacity (z < 5 for a homogeneous gas, and z < 10 for the trapped gas) leads us to perform the calculations of more sensitive quantities measured recently by the MIT group.

引用

页数：5

共 18 条

[1] The quantum theory of the non-ideal gas. II. Behaviour at low temperatures [J].

Beth, E ;

Uhlenbeck, GE .

PHYSICA, 1937, 4 :0915-0924

[2] THE COMPRESSION MODULUS OF THE NUCLEON AND DELTA [J].

BHADURI, RK ;

DEY, J ;

PRESTON, MA .

PHYSICS LETTERS B, 1984, 136 (04) :289-293

[3] SEMICLASSICAL 2-ANYON AND 3-ANYON PARTITION-FUNCTIONS [J].

BHADURI, RK ;

BHALERAO, RS ;

KHARE, A ;

LAW, J ;

MURTHY, MVN .

PHYSICAL REVIEW LETTERS, 1991, 66 (05) :523-526

[4] Obtaining the phase diagram and thermodynamic quantities of bulk systems from the densities of trapped gases [J].

Ho, Tin-Lun ;

Zhou, Qi .

NATURE PHYSICS, 2010, 6 (02) :131-134

[5] High temperature expansion applied to fermions near Feshbach resonance [J].

Ho, TL ;

Mueller, EJ .

PHYSICAL REVIEW LETTERS, 2004, 92 (16) :160404-1

[6] Universal thermodynamics of degenerate quantum gases in the unitarity limit [J].

Ho, TL .

PHYSICAL REVIEW LETTERS, 2004, 92 (09) :090402-1

[7] Measurement of Universal Thermodynamic Functions for a Unitary Fermi Gas [J].

Horikoshi, Munekazu ;

Nakajima, Shuta ;

Ueda, Masahito ;

Mukaiyama, Takashi .

SCIENCE, 2010, 327 (5964) :442-445

[8] Comparison between theory and experiment for universal thermodynamics of a homogeneous, strongly correlated Fermi gas [J].

Hu, Hui ;

Liu, Xia-Ji ;

Drummond, Peter D. .

PHYSICAL REVIEW A, 2011, 83 (06)

[9] Universal thermodynamics of a strongly interacting Fermi gas: theory versus experiment [J].

Hu, Hui ;

Liu, Xia-Ji ;

Drummond, Peter D. .

NEW JOURNAL OF PHYSICS, 2010, 12

[10]

Huang K., 1965, STAT MECH, P309

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