Bare mass effects on the reheating process after inflation

Clery, Simon; Garcia, Marcos A.G.; Mambrini, Yann; Olive, Keith A.

doi:10.1103/PhysRevD.109.103540

Bare mass effects on the reheating process after inflation

Feb 26, 2024

16 pages

Published in:

Phys.Rev.D 109 (2024) 10, 103540

Published: May 15, 2024

e-Print:

2402.16958 [hep-ph]

DOI:

10.1103/PhysRevD.109.103540 (publication)

Report number:

UMN--TH--4325/24,
FTPI--MINN--24/06

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Abstract: (APS)

We consider the effects of a bare mass term for the inflaton, when the inflationary potential takes the form

V (ϕ) = λ ϕ^{k}

about its minimum with

k \geq 4

. We concentrate on

k = 4

, but discuss general cases as well. Further, we assume

λ ϕ_{end}^{2} ≫ m_{ϕ}^{2}

, where

ϕ_{end}

is the inflaton field value when the inflationary expansion ends. We show that the presence of a mass term (which may be present due to radiative corrections or supersymmetry breaking) can significantly alter the reheating process, as the equation of state of the inflaton condensate changes from

w_{ϕ} = \frac{1}{3}

to

w_{ϕ} = 0

when

λ ϕ^{2}

drops below

m_{ϕ}^{2}

. We show that, for a mass

m_{ϕ} ≳ 3 λ^{\frac{1}{4}} T_{RH}

, the mass term will dominate at reheating. The value of

λ

is relatively model independent as it is normalized by the cosmic microwave background perturbation spectrum. For T models of inflation, this leads to

m_{ϕ} ≳ T_{RH} / 250

. We compute the effects on the reheating temperature for cases where reheating is due to inflaton decay (to fermions, scalars, or vectors) or to inflaton scattering (to scalars or vectors). For scattering to scalars and in the absence of a decay, there is always a residual inflaton background that acts as cold dark matter. In this case, we derive a strong upper limit to the inflaton bare mass which for T models is

m_{ϕ} < 350 MeV (T_{RH} / 10^{10} GeV)^{3 / 5}

. We also consider the effect of the bare mass term on the fragmentation of the inflaton condensate.

Note:

16 pages, 10 figures

References(64)

Figures(10)

[1]

Inflation

Keith A. Olive
(
- Minnesota U.
)

- Phys.Rept. 190 (1990) 307-403
•
DOI:
- 10.1016/0370-1573(90)90144-Q

[1]

(, Chur, Switzerland, )

A.D. Linde

[1]

Particle physics models of inflation and the cosmological density perturbation

David H. Lyth
(
- Lancaster U.
)
,
Antonio Riotto
(
- CERN
)

- Phys.Rept. 314 (1999) 1-146
•
e-Print:
- hep-ph/9807278
•
DOI:
- 10.1016/S0370-1573(98)00128-8

[1]

Encyclopædia Inflationaris : Opiparous Edition

Jerome Martin
(
- Paris, Inst. Astrophys.
)
,
Christophe Ringeval
(
- Louvain U. and
- Louvain U., CP3
)
,
Vincent Vennin
(
- Paris, Inst. Astrophys.
)

- Phys.Dark Univ. 46 (2024) 101653,
- Phys.Dark Univ. 5-6 (2014) 75-235
•
e-Print:
- 1303.3787
•
DOI:
- 10.1016/j.dark.2024.101653

[1]

The Best Inflationary Models After Planck

Jérôme Martin
(
- Paris, Inst. Astrophys.
)
,
Christophe Ringeval
(
- Louvain U. and
- Louvain U., CP3
)
,
Roberto Trotta
(
- Imperial Coll., London
)
,
Vincent Vennin
(
- Paris, Inst. Astrophys.
)

- JCAP 03 (2014) 039
•
e-Print:
- 1312.3529
•
DOI:
- 10.1088/1475-7516/2014/03/039

[1]

The Observational Status of Cosmic Inflation after Planck

Jerome Martin
(
- Paris, Inst. Astrophys.
)

- Astrophys.Space Sci.Proc. 45 (2016) 41-134
•
e-Print:
- 1502.05733
•
DOI:
- 10.1007/978-3-319-44769-8_2

[2]

Baryon Asymmetry in Inflationary Universe

A.D. Dolgov
(
- Moscow, ITEP
)
,
Andrei D. Linde
(
- Moscow, ITEP
)

- Phys.Lett.B 116 (1982) 329,
- In *Abbott, L.F. (ed.), Pi, S.Y. (ed.): Inflationary cosmology*, 430-435. (Phys. Lett. B116 (1982) 329-334) and Moscow Inst. Theor. Exp. Phys. GKAE - ITEF-82-078 (82,rec.Jul.) 16 p. (207206) (see Book Index)
•
DOI:
- 10.1016/0370-2693(82)90292-1

[2]

Particle Production in the New Inflationary Cosmology

- Phys.Lett.B 117 (1982) 29,
- In *Abbott, L.F. (ed.), Pi, S.Y. (ed.): Inflationary cosmology*, 436-440. (Phys. Lett. B117 (1982) 29-33) and MIT Cambridge - CTP-0983 (82,rec.Jul.) 18 p
•
DOI:
- 10.1016/0370-2693(82)90867-X

[3]

After Primordial Inflation

- Phys.Lett.B 127 (1983) 30-34
•
DOI:
- 10.1016/0370-2693(83)91624-6

[4]

Planck 2018 results. VI. Cosmological parameters

Planck

Collaboration

•

N. Aghanim
(
- Orsay, IAS
)

et al.

- Astron.Astrophys. 641 (2020) A6,
- Astron.Astrophys. 652 (2021) C4 (erratum)
•
e-Print:
- 1807.06209
•
DOI:
- 10.1051/0004-6361/201833910

[5]

Largest temperature of the radiation era and its cosmological implications

Gian Francesco Giudice
(
- CERN
)
,
Edward W. Kolb
(
)
,
Antonio Riotto
(
- Pisa, Scuola Normale Superiore and
- INFN, Pisa
)

- Phys.Rev.D 64 (2001) 023508
•
e-Print:
- hep-ph/0005123
•
DOI:
- 10.1103/PhysRevD.64.023508

[5]

Production of massive particles during reheating

Daniel J.H. Chung
(
- Chicago U. and
- Chicago U., EFI and
- Fermilab
)
,
Edward W. Kolb
(
)
,
Antonio Riotto
(
- CERN
)

- Phys.Rev.D 60 (1999) 063504
•
e-Print:
- hep-ph/9809453
•
DOI:
- 10.1103/PhysRevD.60.063504

[6]

Thermalization Process after Inflation and Effective Potential of Scalar Field

Kyohei Mukaida
(
- Tokyo U.
)
,
Masaki Yamada
(
- Tokyo U., ICRR and
- Tokyo U., IPMU
)

- JCAP 02 (2016) 003
•
e-Print:
- 1506.07661
•
DOI:
- 10.1088/1475-7516/2016/02/003

[7]

Enhancement of the Dark Matter Abundance Before Reheating: Applications to Gravitino Dark Matter

Marcos A. G. Garcia
(
- Rice U.
)
,
Yann Mambrini
(
- Orsay, LPT
)
,
Keith A. Olive
(
- Minnesota U. and
- Minnesota U., Theor. Phys. Inst.
)
,
Marco Peloso
(
- Minnesota U.
)

- Phys.Rev.D 96 (2017) 10, 103510
•
e-Print:
- 1709.01549
•
DOI:
- 10.1103/PhysRevD.96.103510

[8]

Boosting Freeze-in through Thermalization

Nicolás Bernal
(
- Antonio Narino U.
)

- JCAP 10 (2020) 006
•
e-Print:
- 2005.08988
•
DOI:
- 10.1088/1475-7516/2020/10/006

[8]

Variable inflaton equation-of-state and reheating

Alessandro Di Marco
(
- Rome U., Tor Vergata
)
,
Gianfranco Pradisi
(
- Rome U., Tor Vergata and
- INFN, Rome2
)

- Int.J.Mod.Phys.A 36 (2021) 15, 2150095,
- International Journal of Modern Physics A (IJMPA), Volume No. 36, Issue No. 15, Article No. 2150095, Year 2021
•
e-Print:
- 2102.00326
•
DOI:
- 10.1142/S0217751X21500950