Particle production after inflation with non-minimal derivative coupling to gravity

被引：27

作者：

Ema, Yohei ^{[1
]}

Jinno, Ryusuke ^{[1
]}

Mukaida, Kyohei ^{[2
]}

Nakayama, Kazunori ^{[1
,2
]}

机构：

[1] Univ Tokyo, Fac Sci, Dept Phys, Bunkyo Ku, Tokyo 1330033, Japan

[2] Univ Tokyo, UTIAS, Kavli IPMU WPI, Kashiwa, Chiba 2778583, Japan

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2015年 / 10期

关键词：

modified gravity; inflation; physics of the early universe; STANDARD MODEL;

D O I：

10.1088/1475-7516/2015/10/020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study cosmological evolution after inflation in models with non-minimal derivative coupling to gravity. The background dynamics is solved and particle production associated with rapidly oscillating Hubble parameter is studied in detail. In addition, production of gravitons through the non-minimal derivative coupling with the inflaton is studied. We also find that the sound speed squared of the scalar perturbation oscillates between positive and negative values when the non-minimal derivative coupling dominates over the minimal kinetic term. This may lead to an instability of this model. We point out that the particle production rates are the same as those in the Einstein gravity with the minimal kinetic term, if we require the sound speed squared is positive definite.

引用

页数：22

共 32 条

[1] Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC [J].

Aad, G. ;

Abajyan, T. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdelalim, A. A. ;

Abdinov, O. ;

Aben, R. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, U. S. ;

Abramowicz, H. ;

Abreu, H. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Agustoni, M. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alam, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Allbrooke, B. M. M. .

PHYSICS LETTERS B, 2012, 716 (01) :1-29

[2]

[Anonymous], ARXIV150202114 PLANC

[3]

[Anonymous], ARXIV150504670

[4]

[Anonymous], PHYS REV D

[5]

[Anonymous], 2012, PHYS LETT B, DOI [DOI 10.1016/J.PHYSLETB.2012.08.021, DOI 10.1016/j.physletb.2012.08.021]

[6] Cosmological evolution in R2 gravity [J].

Arbuzova, E. V. ;

Dolgov, A. D. ;

Reverberi, L. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2012, (02)

[7] Nonperturbative Corrections to Particle Production from Coherent Oscillation [J].

Asaka, Takehiko ;

Nagao, Hiroaki .

PROGRESS OF THEORETICAL PHYSICS, 2010, 124 (02) :293-314

[8] Higgs inflation: consistency and generalisations [J].

Bezrukov, F. ;

Magnin, A. ;

Shaposhnikov, M. ;

Sibiryakov, S. .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (01)

[9] The Standard Model Higgs boson as the inflaton [J].

Bezrukov, Fedor ;

Shaposhnikov, Mikhail .

PHYSICS LETTERS B, 2008, 659 (03) :703-706

[10] INDUCED GRAVITY INFLATION IN THE STANDARD MODEL OF PARTICLE PHYSICS [J].

CERVANTESCOTA, JL ;

DEHNEN, H .

NUCLEAR PHYSICS B, 1995, 442 (1-2) :391-409

← 1 2 3 4 →