Barbero-Immirzi field in canonical formalism of pure gravity

被引：74

作者：

Calcagni, Gianluca ^{[1
]}

Mercuri, Simone ^{[1
]}

机构：

[1] Penn State Univ, Dept Phys, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 08期

基金：

美国国家科学基金会;

关键词：

QUANTUM-GRAVITY; MACHS PRINCIPLE; TORSION; VARIABLES; REAL;

D O I：

10.1103/PhysRevD.79.084004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Barbero-Immirzi (BI) parameter is promoted to a field and a canonical analysis is performed when it is coupled with a Nieh-Yan topological invariant. It is shown that, in the effective theory, the BI field is a canonical pseudoscalar minimally coupled with gravity. This framework is argued to be more natural than the one of the usual Holst action. Potential consequences in relation with inflation and the quantum theory are briefly discussed.

引用

页数：10

共 50 条

[1] A quantum gravitational relaxation of the cosmological constant [J].

Alexander, S .

PHYSICS LETTERS B, 2005, 629 (2-4) :53-59

[2] Quantum Gravity as a Fermi Liquid [J].

Alexander, Stephon H. S. ;

Calcagni, Gianluca .

FOUNDATIONS OF PHYSICS, 2008, 38 (12) :1148-1184

[3] Superconducting loop quantum gravity and the cosmological constant [J].

Alexander, Stephon H. S. ;

Calcagni, Gianluca .

PHYSICS LETTERS B, 2009, 672 (4-5) :386-389

[4]

[Anonymous], 1991, MATH FDN

[5]

[Anonymous], 1975, LARGE SCALE STRUCTUR

[6]

[Anonymous], 1992, Effective action in quantum gravity

[7] NEW VARIABLES FOR CLASSICAL AND QUANTUM-GRAVITY [J].

ASHTEKAR, A .

PHYSICAL REVIEW LETTERS, 1986, 57 (18) :2244-2247

[8] Background independent quantum giravity: a status report [J].

Ashtekar, A ;

Lewandowski, J .

CLASSICAL AND QUANTUM GRAVITY, 2004, 21 (15) :R53-R152

[9] NEW HAMILTONIAN-FORMULATION OF GENERAL-RELATIVITY [J].

ASHTEKAR, A .

PHYSICAL REVIEW D, 1987, 36 (06) :1587-1602

[10] Quantum geometry and black hole entropy [J].

Ashtekar, A ;

Baez, J ;

Corichi, A ;

Krasnov, K .

PHYSICAL REVIEW LETTERS, 1998, 80 (05) :904-907

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