Quantum reduced loop gravity: Universe on a lattice

被引：31

作者：

Alesci, Emanuele ^{[1
]}

Cianfrani, Francesco ^{[2
]}

机构：

[1] Uniwersytet Warszawski, Inst Fizyki Teoretycznej, PL-02093 Warsaw, Poland

[2] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 08期

关键词：

COHERENT STATES; COSMOLOGY;

D O I：

10.1103/PhysRevD.92.084065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the quantum flat universe in Quantum Reduced Loop Gravity in terms of states based on cuboidal graphs with six-valent nodes. We investigate the action of the scalar constraint operator at each node, and we construct proper semiclassical states. This allows us to discuss the semiclassical effective dynamics of the quantum universe, which resembles that of Loop Quantum Cosmology. In particular, the regulator is identified with the third root of the inverse number of nodes within each homogeneous patch, while inverse-volume corrections are enhanced.

引用

页数：13

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