Gravitational portals with nonminimal couplings - INSPIRE

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Gravitational portals with nonminimal couplings

Simon Clery
(
- IJCLab, Orsay
)
,
Yann Mambrini
(
- IJCLab, Orsay and
- CERN
)
,
Keith A. Olive
(
- Minnesota U., Theor. Phys. Inst.
)
,
Andrey Shkerin
(
- Minnesota U., Theor. Phys. Inst.
)
,
Sarunas Verner
(
- Minnesota U., Theor. Phys. Inst.
)

Mar 3, 2022

14 pages

Published in:

Phys.Rev.D 105 (2022) 9, 095042

Published: May 1, 2022

e-Print:

2203.02004 [hep-ph]

DOI:

10.1103/PhysRevD.105.095042 (publication)

Report number:

UMN--TH--4116/22,
FTPI--MINN--22/07,
CERN-TH-2022-025

View in:

reference search62 citations

Citations per year

Abstract: (APS)

We consider the effects of nonminimal couplings to curvature of the form

ξ_{S} S^{2} R

for three types of scalars: the Higgs boson, the inflaton, and a scalar dark matter candidate. We compute the abundance of dark matter produced by these nonminimal couplings to gravity and compare to similar results with minimal couplings. We also compute the contribution to the radiation bath during reheating. The main effect is a potential augmentation of the maximum temperature during reheating. A model independent limit of

O (10^{12}) GeV

is obtained. For couplings

ξ_{S} ≳ O (1)

, these dominate over minimal gravitational interactions.

coupling: nonminimal
gravitation: interaction
coupling: minimal
dark matter: scalar
gravitation: minimal
reheating
inflaton
GeV
curvature
Higgs particle

References(81)

Figures(8)

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(
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,
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(
- Minnesota U., Theor. Phys. Inst.
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(
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)
,
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(
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)
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(
- CERN
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Soichiro Hashiba
(
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)
,
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(
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)

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Lingfeng Li
(
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)
,
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(
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)
,
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(
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)
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)
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Jose A.R. Cembranos
(
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)
,
Luis J. Garay
(
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)
,
Jose M. Sánchez Velázquez
(
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)

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E. Babichev
(
- IJCLab, Orsay
)
,
D. Gorbunov
(
- Moscow, INR and
- Moscow, MIPT
)
,
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(
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)
,
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(
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Siyang Ling
(
- Rice U.
)
,
Andrew J. Long
(
- Rice U.
)

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[13]

Gravitational Effects on Inflaton Decay

Yohei Ema
(
- Tokyo U.
)
,
Ryusuke Jinno
(
- Tokyo U.
)
,
Kyohei Mukaida
(
- Tokyo U.
)
,
Kazunori Nakayama
(
- Tokyo U. and
- Tokyo U., IPMU
)

- JCAP 05 (2015) 038
•
e-Print:
- 1502.02475
•
DOI:
- 10.1088/1475-7516/2015/05/038

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