Distinctive signatures of space-time diffeomorphism breaking in EFT of inflation
Distinctive signatures of space-time diffeomorphism breaking in EFT of inflation
复制标题
暴胀 EFT 中时空微分同胚断裂的独特特征
DOI:
10.1088/1475-7516/2016/03/044
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发表时间:
2016
影响因子:
6.4
通讯作者:
Bartolo N
中科院分区:
文献类型:
--
作者:
Bartolo N
The effective field theory of inflation is a powerful tool for obtaining model independent predictions common to large classes of inflationary models. It requires only information about the symmetries broken during the inflationary era, and on the number and nature of fields that drive inflation. In this paper, we consider the case for scenarios that simultaneously break time reparameterization and spatial diffeomorphisms during inflation. We examine how to analyse such systems using an effective field theory approach, and we discuss several observational consequences for the statistics of scalar and tensor modes. For example, examining the three point functions, we show that this symmetry breaking pattern can lead to an enhanced amplitude for the squeezed bispectra, and to a distinctive angular dependence between their three wavevectors. We also discuss how our results indicate prospects for constraining the level of spatial diffeomorphism breaking during inflation.
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影响因子:
6.4
作者:
N. Bartolo;S. Matarrese;M. Pietroni;A. Riotto;D. S. P. D. Padova-D.-S.-P.-D.-Padova-2059864405;I. Infn;Padova;I. Cern;Switzerland Centre for Theoretical Cosmology;Cambridge;UK.
通讯作者:
N. Bartolo;S. Matarrese;M. Pietroni;A. Riotto;D. S. P. D. Padova-D.-S.-P.-D.-Padova-2059864405;I. Infn;Padova;I. Cern;Switzerland Centre for Theoretical Cosmology;Cambridge;UK.
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
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影响因子:
5
作者:
S. Endlich;B. Horn;Alberto Nicolis;Junpu Wang
通讯作者:
Junpu Wang
影响因子:
8.6
作者:
Masa-aki Watanabe;S. Kanno;J. Soda
通讯作者:
Masa-aki Watanabe;S. Kanno;J. Soda
影响因子:
6.5
作者:
Ade, P. A. R.;Aghanim, N.;Zonca, A.
通讯作者:
Zonca, A.