Effective constraints of loop quantum gravity

被引:37
作者
Bojowald, Martin [1 ]
Kagan, Mikhail
Hernandez, Hector H.
Skirzewski, Aureliano
机构
[1] Penn State Univ, Inst Gravitat Phys & Geometry, Davy Lab 104, University Pk, PA 16802 USA
[2] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Potsdam, Germany
来源
PHYSICAL REVIEW D | 2007年 / 75卷 / 06期
关键词
D O I
10.1103/PhysRevD.75.064022
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Within a perturbative cosmological regime of loop quantum gravity corrections to effective constraints are computed. This takes into account all inhomogeneous degrees of freedom relevant for scalar metric modes around flat space and results in explicit expressions for modified coefficients and of higher order terms. It also illustrates the role of different scales determining the relative magnitude of corrections. Our results demonstrate that loop quantum gravity has the correct classical limit, at least in its sector of cosmological perturbations around flat space, in the sense of perturbative effective theory.
引用
收藏
页数:25
相关论文
共 46 条
[1]  
Arnowitt R. L., 1962, GRAVITATION INTRO CU
[2]   QUANTIZATION OF DIFFEOMORPHISM INVARIANT THEORIES OF CONNECTIONS WITH LOCAL DEGREES OF FREEDOM [J].
ASHTEKAR, A ;
LEWANDOWSKI, J ;
MAROLF, D ;
MOURAO, J ;
THIEMANN, T .
JOURNAL OF MATHEMATICAL PHYSICS, 1995, 36 (11) :6456-6493
[3]   Polymer and Fock representations for a scalar field [J].
Ashtekar, A ;
Lewandowski, J ;
Sahlmann, H .
CLASSICAL AND QUANTUM GRAVITY, 2003, 20 (01) :L11-L21
[4]   NEW HAMILTONIAN-FORMULATION OF GENERAL-RELATIVITY [J].
ASHTEKAR, A .
PHYSICAL REVIEW D, 1987, 36 (06) :1587-1602
[5]  
Ashtekar A., 1999, On Einstein's Path, P23, DOI DOI 10.1007/978-1-4612-1422-9_3
[6]  
Ashtekar A., 1998, Adv. Theor. Math. Phys, V1, P388, DOI [10.4310/ATMP.1997.v1.n2.a8, DOI 10.4310/ATMP.1997.V1.N2.A8]
[7]   Quantum nature of the big bang: An analytical and numerical investigation [J].
Ashtekar, Abhay ;
Pawlowski, Tomasz ;
Singh, Parampreet .
PHYSICAL REVIEW D, 2006, 73 (12)
[8]  
Ashtekar A, 2003, ADV THEOR MATH PHYS, V7, P233
[9]   REAL ASHTEKAR VARIABLES FOR LORENTZIAN SIGNATURE SPACE-TIMES [J].
BARBERO, JF .
PHYSICAL REVIEW D, 1995, 51 (10) :5507-5510
[10]   Homogeneous loop quantum cosmology [J].
Bojowald, M .
CLASSICAL AND QUANTUM GRAVITY, 2003, 20 (13) :2595-2615