Correspondence between a scalar field and an effective perfect fluid

被引：56

作者：

Faraoni, Valerio ^{[1
,2
]}

机构：

[1] Bishops Univ, Dept Phys, Sherbrooke, PQ J1M 1Z7, Canada

[2] Bishops Univ, STAR Res Cluster, Sherbrooke, PQ J1M 1Z7, Canada

来源：

PHYSICAL REVIEW D | 2012年 / 85卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

EQUATION; QUANTUM;

D O I：

10.1103/PhysRevD.85.024040

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is widely acknowledged that, for formal purposes, a minimally coupled scalar field is equivalent to an effective perfect fluid with equation of state determined by the scalar potential. This correspondence is not complete because the Lagrangian densities L-1 = P and L-2 = -rho, which are equivalent for a perfect fluid, are not equivalent for a minimally coupled scalar field. The exchange L-1 <-> L-2 amounts to exchanging a canonical scalar field with a phantom scalar field.

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页数：5

相关论文

共 36 条

[1] Do f(R) theories matter? [J].

Bertolami, O. ;

Paramos, J. .

PHYSICAL REVIEW D, 2008, 77 (08)

[2] Mimicking dark matter through a non-minimal gravitational coupling with matter [J].

Bertolami, O. ;

Paramos, J. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (03)

[3] On the non-minimal gravitational coupling to matter [J].

Bertolami, O. ;

Paramos, J. .

CLASSICAL AND QUANTUM GRAVITY, 2008, 25 (24)

[4]

Bertolami O., 2009, PROBLEMS MODERN COSM

[5] Extra force in f(R) modified theories of gravity [J].

Bertolami, Orfeu ;

Bohmer, Christian G. ;

Harko, Tiberiu ;

Lobo, Francisco S. N. .

PHYSICAL REVIEW D, 2007, 75 (10)

[6] Energy conditions and stability in f(R) theories of gravity with nonminimal coupling to matter [J].

Bertolami, Orfeu ;

Sequeira, Miguel Carvalho .

PHYSICAL REVIEW D, 2009, 79 (10)

[7] Nonminimal coupling of perfect fluids to curvature [J].

Bertolami, Orfeu ;

Lobo, Francisco S. N. ;

Paramos, Jorge .

PHYSICAL REVIEW D, 2008, 78 (06)

[8] Null dust in canonical gravity [J].

Bicak, J ;

Kuchar, KV .

PHYSICAL REVIEW D, 1997, 56 (08) :4878-4895

[9] Action approach to cosmological perturbations:: the second-order metric in matter dominance [J].

Boubekeur, Lotfi ;

Creminelli, Paolo ;

Norena, Jorge ;

Vernizzi, Filippo .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2008, (08)

[10] ACTION FUNCTIONALS FOR RELATIVISTIC PERFECT FLUIDS [J].

BROWN, JD .

CLASSICAL AND QUANTUM GRAVITY, 1993, 10 (08) :1579-1606

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