Cosmological significance of one-loop effective gravity

被引：41

作者：

Espriu, D

Multamäki, T

Vagenas, EC

机构：

[1] Univ Barcelona, DECM & CER Astrophys, S-08028 Barcelona, Spain

[2] NORDITA, DK-2100 Copenhagen, Denmark

[3] Univ Athens, Dept Phys, Nucl & Particle Phys Sect, GR-15771 Athens, Greece

来源：

PHYSICS LETTERS B | 2005年 / 628卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2005.09.033

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the one-loop effective action for gravity in a cosmological setup to determine possible cosmological effects of quantum corrections to Einstein theory. By considering the effect of the universal non-local terms in a toy model, we show that they can play an important role in the very early universe. We find that during inflation, the non-local terms are significant, leading to deviations from the standard inflationary expansion. (c) 2005 Elsevier B.V. All rights reserved.

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页码：197 / 205

页数：9

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