Emergent inflation from a Nambu-Jona-Lasinio mechanism in gravity with non-dynamical torsion

被引：7
|
作者：
Addazi, Andrea [1 ]
Chen, Pisin [2 ,3 ,4 ]
Marciano, Antonino [1 ]
机构：
[1] Fudan Univ, Ctr Field Theory & Particle Phys, Dept Phys, Shanghai 200433, Peoples R China
[2] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan
[3] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[4] Stanford Univ, SLAC Natl Accelerator Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA
来源：
EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 04期
关键词：
EINSTEIN; MODEL; COSMOLOGY; ANALOGY;
D O I：
10.1140/epjc/s10052-019-6803-7
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：
We discuss how inflation can emerge from a four-fermion interaction induced by torsion. Inflation can arise from coupling torsion to Standard Model fermions, without any need of introducing new scalar particles beyond the Standard Model. Within this picture, the inflaton field can be a composite field of the SM-particles and arises from a Nambu-Jona-Lasinio mechanism in curved space-time, non-minimally coupled with the Ricci scalar. The model we specify predicts small value of the r-parameter, namely r approximate to 10-4 divided by 10-2, which nonetheless would be detectable by the next generation of experiments, including BICEP 3 and the AliCPT projects.
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页数：6
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