String cosmology backgrounds from classical string geometry

Bernardo, Heliudson; Brandenberger, Robert; Franzmann, Guilherme

doi:10.1103/PhysRevD.103.043540

String cosmology backgrounds from classical string geometry

May 17, 2020

18 pages

Published in:

Phys.Rev.D 103 (2021) 4, 043540

Published: Feb 27, 2021

e-Print:

2005.08324 [hep-th]

DOI:

10.1103/PhysRevD.103.043540

View in:

reference search39 citations

Citations per year

Abstract: (APS)

We introduce a very early universe model based on the thermodynamics of a gas of closed strings in a background that is nonperturbative in α′. Upon considering the fully α′-corrected equations extended to include certain anisotropic cosmological backgrounds, we describe the evolution of the system in three different stages parametrized by the gas’s equation of state. Using standard string thermodynamical arguments, we start with an isotropic ten-dimensional universe inside the string scale and evolve it toward a universe with four large spacetime dimensions and six stabilized internal dimensions in the Einstein frame.

Note:

28 pages, 1 figure; references and appendix C added

Cosmology
string: closed
cosmological model: background
dimension: 10
string: gas
nonperturbative
thermodynamics
anisotropy
geometry: classical
space: Einstein

References(75)

Figures(1)

[1]

Planck 2018 results. I. Overview and the cosmological legacy of Planck

Planck

Collaboration

•

N. Aghanim
(
- Orsay, IAS
)

et al.

- Astron.Astrophys. 641 (2020) A1
•
e-Print:
- 1807.06205
•
DOI:
- 10.1051/0004-6361/201833880

[2]

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

[3]

The Creation of the Universe as a Quantum Phenomenon

- Annals Phys. 115 (1978) 78
•
DOI:
- 10.1016/0003-4916(78)90176-8

[4]

First order phase transition of a vacuum and expansion of the universe

K. Sato

- Mon.Not.Roy.Astron.Soc. 195 (1981) 467

[5]

A New Type of Isotropic Cosmological Models Without Singularity

Alexei A. Starobinsky
(
- Cambridge U. and
- Landau Inst.
)

- Phys.Lett.B 91 (1980) 99-102,
- Adv.Ser.Astrophys.Cosmol. 3 (1987) 130-133,
•
DOI:
- 10.1016/0370-2693(80)90670-X

[6]

The Inflationary Universe: A Possible Solution to the Horizon and Flatness Problems

Alan H. Guth
(
- SLAC
)

- Phys.Rev.D 23 (1981) 347-356,
- Adv.Ser.Astrophys.Cosmol. 3 (1987) 139-148 (reprint)
•
DOI:
- 10.1103/PhysRevD.23.347

[7]

A New Inflationary Universe Scenario: A Possible Solution of the Horizon, Flatness, Homogeneity, Isotropy and Primordial Monopole Problems

Andrei D. Linde
(
- Lebedev Inst.
)

- Phys.Lett.B 108 (1982) 389-393,
- In *Moscow 1981, Proceedings, Quantum Gravity*, 185-195 and Moscow Inst. Phys. Acad. Sci. - 81-229 (81,REC.DEC.) 15p,
- Adv.Ser.Astrophys.Cosmol. 3 (1987) 149-153 (reprint)
•
DOI:
- 10.1016/0370-2693(82)91219-9

[8]

Natural inflation, in Nuffield Workshop on the Very Early Universe , pp. 251-266

P.J. Steinhardt

[9]

The Birth of Inflationary Universes

Alexander Vilenkin
(
- Tufts U.
)

- Phys.Rev.D 27 (1983) 2848
•
DOI:
- 10.1103/PhysRevD.27.2848

[10]

The Singularities of gravitational collapse and cosmology

S.W. Hawking
(
- Cambridge U.
)
,
R. Penrose
(
- Birkbeck Coll.
)

- Proc.Roy.Soc.Lond.A 314 (1970) 529-548
•
DOI:
- 10.1098/rspa.1970.0021

[11]

Eternal inflation and the initial singularity

Arvind Borde
(
- Tufts U.
)
,
Alexander Vilenkin
(
- Tufts U.
)

- Phys.Rev.Lett. 72 (1994) 3305-3309
•
e-Print:
- gr-qc/9312022
•
DOI:
- 10.1103/PhysRevLett.72.3305

[12]

Inflationary space-times are incompletein past directions

- Phys.Rev.Lett. 90 (2003) 151301
•
e-Print:
- gr-qc/0110012
•
DOI:
- 10.1103/PhysRevLett.90.151301

[13]

Maximal extensions and singularities in inflationary spacetimes

Daisuke Yoshida
(
- McGill U.
)
,
Jerome Quintin
(
- McGill U.
)

- Class.Quant.Grav. 35 (2018) 15, 155019
•
e-Print:
- 1803.07085
•
DOI:
- 10.1088/1361-6382/aacf4b

[14]

String Theory. Vol. 1: An Introduction to the Bosonic String, Cambridge Monographs on Mathematical Physics (Cambridge University Press, Cambridge, England,)