Dynamically induced Planck scale and inflation

被引：145

作者：

Kannike, Kristjan ^{[1
]}

Huetsi, Gert ^{[2
]}

Pizza, Liberato ^{[3
,4
]}

Racioppi, Antonio ^{[1
]}

Raidal, Martti ^{[1
,5
]}

Salvio, Alberto ^{[6
,7
]}

Strumia, Alessandro ^{[1
,3
,4
]}

机构：

[1] NICPB, EE-10143 Tallinn, Estonia

[2] Tartu Observ, EE-61602 Toravere, Estonia

[3] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy

[4] Ist Nazl Fis Nucl, I-56127 Pisa, Italy

[5] Univ Tartu, Inst Phys, EE-50411 Tartu, Estonia

[6] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain

[7] UAM CSIC, Inst Fis Teor, Madrid, Spain

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 05期

关键词：

Cosmology of Theories beyond the SM; Renormalization Group; DENSITY PERTURBATIONS; UNIFIED THEORIES; HIGGS; RENORMALIZATION; UNIVERSE; GRAVITY; COSMOLOGY; BREAKING; FLATNESS; FORMULA;

D O I：

10.1007/JHEP05(2015)065

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Theories where the Planck scale is dynamically generated from dimensionless interactions provide predictive inflationary potentials and super-Planckian field variations. We first study the minimal single field realisation in the low-energy effective field theory limit, finding the predictions n(s) approximate to 0.96 for the spectral index and r approximate to 0.13 for the tensor-toscalar ratio, which can be reduced down to approximate to 0.04 in presence of large couplings. Next we consider agravity as a dimensionless quantum gravity theory finding a multifield inflation that converges towards an attractor trajectory and predicts n(s) approximate to 0.96 and 0.003 < r < 0.13, interpolating between the quadratic and Starobinsky inflation. These theories relate the smallness of the weak scale to the smallness of inflationary perturbations: both arise naturally because of small couplings, implying a reheating temperature of 10(7-9) GeV. A measurement of r by Keck/Bicep3 would give us information on quantum gravity in the dimensionless scenario.

引用

页数：31

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