Can asymptotic series resolve the problems of inflation?

被引:17
作者
Brandenberger, RH [1 ]
Zhitnitsky, AR [1 ]
机构
[1] UNIV BRITISH COLUMBIA, DEPT PHYS, VANCOUVER, BC V6T 1Z1, CANADA
关键词
D O I
10.1103/PhysRevD.55.4640
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss a cosmological scenario in which inflation is driven by a potential which is motivated by an effective Lagrangian approach, to gravity. We exploit the recent arguments that an effective Lagrangian L-eff which, by definition, contains operators of arbitrary dimensionality, is in general not a convergent but rather an asymptotic series with factorially growing coefficients. The potential we use is obtained by resumming this series. It provides a natural realization of the inflationary scenario. By caking into account a cosmological infrared cutoff, we propose a mechanism which simultaneously provides a graceful exit from inflation and relaxes to zero the contribution to the cosmological constant which stems from the inflation Lagrangian.
引用
收藏
页码:4640 / 4646
页数:7
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