Implications of purely classical gravity for inflationary tensor modes

被引：37

作者：

Ashoorioon, Amjad ^{[1
]}

Dev, P. S. Bhupal ^{[2
]}

Mazumdar, Anupam ^{[1
]}

机构：

[1] Univ Lancaster, Dept Phys, Consortium Fundamental Phys, Lancaster LA1 4YB, England

[2] Univ Manchester, Consortium Fundamental Phys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

来源：

MODERN PHYSICS LETTERS A | 2014年 / 29卷 / 30期

关键词：

Classical gravity; inflation; gravitational waves; GRAVITATIONAL-RADIATION;

D O I：

10.1142/S0217732314501636

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the implications of a purely classical (instead of quantum) theory of gravity for the primordial gravitational wave spectrum generated during inflation. We argue that for a scalar field driven inflation in a classical gravity the amplitude of the gravitational wave will be too small, irrespective of its primordial seed, to be detected in any forthcoming experiments. Therefore, a positive detection of the B-mode polarizations in the Cosmic Microwave Background (CMB) spectrum will naturally confirm the quantum nature of gravity itself. Furthermore there will be no upper limit on the scale of inflation in the case of classical gravity, and a high-scale model of inflation can easily bypass the observational constraints.

引用

页数：10

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