Non‐Standard Cosmological Models and The Trans‐Planckian Censorship Conjecture - INSPIRE

DataBETA

Non‐Standard Cosmological Models and The Trans‐Planckian Censorship Conjecture

Mahdi Torabian
(
- Sharif U. of Tech.
)

Oct 15, 2019

4 pages

Published in:

Fortsch.Phys. 68 (2020) 2, 1900092

Published: Feb 1, 2020

e-Print:

1910.06867 [hep-th]

DOI:

10.1002/prop.201900092

View in:

ADS Abstract Service

reference search34 citations

Citations per year

Abstract: (WILEY)

The trans‐Planckian censorship conjecture (TCC) puts an upper bound on the life‐time of de Sitter spacetimes. It has immediate consequences for inflationary cosmology. In the standard paradigm, the universe has experienced a single stage of inflation and follows a thermal history. Then, the TCC puts an upper bound on the Hubble parameter during inflation Hinf around 0.1 GeV. Consequently, it implies a severe fine‐tuning in initial condition for inflation and non‐detection of primordial gravitational waves. In this note, we study non‐standard cosmological paradigms with non‐thermal history and/or multiple stages of inflations. It is motivated by string theory compactifications and axiverse scenarios in which the modulus/axion fields are effective in the early universe. In early matter domination the TCC bound on Hinf can be raised up to 3 orders of magnitude. In multiple inflationary scenarios the upper bound on the observable inflation can be raised up 1014 GeV to touch the Planck 2018 bound.

Note:

4 pages, 3 figures, v2: references added, plots added for illustration, typos corrected, v3:published version

inflation
non‐standard cosmology
swampland
trans‐Planckian censorship
inflation
cosmological model
history
moduli
compactification
Hubble constant

References(37)

Figures(3)

[1]

De Sitter Space and the Swampland

Georges Obied
(
- Harvard U., Phys. Dept.
)
,
Hirosi Ooguri
(
- Caltech and
- Tokyo U., IPMU
)
,
Lev Spodyneiko
(
- Caltech
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

e-Print:
- 1806.08362

[2]

Distance and de Sitter Conjectures on the Swampland

Hirosi Ooguri
(
- Caltech and
- Tokyo U., IPMU
)
,
Eran Palti
(
- Munich, Max Planck Inst.
)
,
Gary Shiu
(
- Wisconsin U., Madison
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

- Phys.Lett.B 788 (2019) 180-184
•
e-Print:
- 1810.05506
•
DOI:
- 10.1016/j.physletb.2018.11.018

[3]

On the Cosmological Implications of the String Swampland

Prateek Agrawal
(
- Harvard U., Phys. Dept.
)
,
Georges Obied
(
- Harvard U., Phys. Dept.
)
,
Paul J. Steinhardt
(
- Princeton U. and
- Princeton U., CTP and
- New York U., CCPP
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

- Phys.Lett.B 784 (2018) 271-276
•
e-Print:
- 1806.09718
•
DOI:
- 10.1016/j.physletb.2018.07.040

[4]

Bounds on Slow Roll and the de Sitter Swampland

- JHEP 11 (2019) 075
•
e-Print:
- 1807.05193
•
DOI:
- 10.1007/JHEP11(2019)075

[5]

The String Landscape, the Swampland, and the Missing Corner

T. Daniel Brennan
(
- Rutgers U., Piscataway
)
,
Federico Carta
(
- Madrid, Autonoma U. and
- Madrid, IFT
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

- PoS TASI2017 (2017) 015
•
e-Print:
- 1711.00864
•
DOI:
- 10.22323/1.305.0015

[6]

The Swampland: Introduction and Review

Eran Palti
(
- Munich, Max Planck Inst.
)

- Fortsch.Phys. 67 (2019) 6, 1900037
•
e-Print:
- 1903.06239
•
DOI:
- 10.1002/prop.201900037

[7]

Trans-Planckian Censorship and the Swampland

Alek Bedroya
(
- Harvard U.
)
,
Cumrun Vafa
(
- Harvard U.
)

- JHEP 09 (2020) 123
•
e-Print:
- 1909.11063
•
DOI:
- 10.1007/JHEP09(2020)123

[8]

Inflation

Daniel Baumann
(
- Princeton, Inst. Advanced Study and
- Harvard U., Phys. Dept.
)

[9]

The TransPlanckian problem of inflationary cosmology

Jerome Martin
(
- Meudon Observ.
)
,
Robert H. Brandenberger
(
- Brown U.
)

- Phys.Rev.D 63 (2001) 123501
•
e-Print:
- hep-th/0005209
•
DOI:
- 10.1103/PhysRevD.63.123501

[10]

The Robustness of inflation to changes in superPlanck scale physics

Robert H. Brandenberger
(
- Brown U.
)
,
Jerome Martin
(
- Meudon Observ.
)

- Mod.Phys.Lett.A 16 (2001) 999-1006
•
e-Print:
- astro-ph/0005432
•
DOI:
- 10.1142/S0217732301004170

[11]

Trans-Planckian Issues for Inflationary Cosmology

- Class.Quant.Grav. 30 (2013) 113001
•
e-Print:
- 1211.6753
•
DOI:
- 10.1088/0264-9381/30/11/113001

[12]

Initial conditions for inflation

Nemanja Kaloper
(
- Stanford U., Phys. Dept. and
- UC, Davis and
- Brandeis U. and
- SLAC
)
,
Matthew Kleban
(
- Stanford U., Phys. Dept. and
- UC, Davis and
- Brandeis U. and
- SLAC
)
,
Albion Lawrence
(
- Stanford U., Phys. Dept. and
- UC, Davis and
- Brandeis U. and
- SLAC
)
,
Stephen Shenker
(
- Stanford U., Phys. Dept. and
- UC, Davis and
- Brandeis U. and
- SLAC
)
,
Leonard Susskind
(
- Stanford U., Phys. Dept. and
- UC, Davis and
- Brandeis U. and
- SLAC
)

- JHEP 11 (2002) 037
•
e-Print:
- hep-th/0209231
•
DOI:
- 10.1088/1126-6708/2002/11/037

[13]

Trans-Planckian Censorship and Inflationary Cosmology

Alek Bedroya
(
- Harvard U.
)
,
Robert Brandenberger
(
- McGill U.
)
,
Marilena Loverde
(
- YITP, Stony Brook
)
,
Cumrun Vafa
(
- Harvard U.
)

- Phys.Rev.D 101 (2020) 10, 103502
•
e-Print:
- 1909.11106
•
DOI:
- 10.1103/PhysRevD.101.103502

[14]

Pre-inflation and trans-Planckian censorship

Yong Cai
(
- Beijing, GUCAS
)
,
Yun-Song Piao
(
- Beijing, GUCAS and
- Beijing, Inst. Theor. Phys.
)

- Sci.China Phys.Mech.Astron. 63 (2020) 11, 110411
•
e-Print:
- 1909.12719
•
DOI:
- 10.1007/s11433-020-1573-5

[15]

Trans-Planckian censorship, inflation, and dark matter

Tommi Tenkanen
(
- Johns Hopkins U.
)

- Phys.Rev.D 101 (2020) 6, 063517
•
e-Print:
- 1910.00521
•
DOI:
- 10.1103/PhysRevD.101.063517

[16]

Distance, de Sitter and Trans-Planckian Censorship conjectures: the status quo of Warm Inflation

Suratna Das
(
- Indian Inst. Tech., Kanpur
)

- Phys.Dark Univ. 27 (2020) 100432
•
e-Print:
- 1910.02147
•
DOI:
- 10.1016/j.dark.2019.100432

[17]

Universal Upper Bound on the Inflationary Energy Scale from the Trans-Planckian Censorship Conjecture

Shuntaro Mizuno
(
- Hachinohe Inst. Tech.
)
,
Shinji Mukohyama
(
- Kyoto U. (main) and
- Tokyo U., IPMU
)
,
Shi Pi
(
- Tokyo U., IPMU
)
,
Yun-Long Zhang
(
- Kyoto U. (main)
)

- Phys.Rev.D 102 (2020) 2, 021301
•
e-Print:
- 1910.02979
•
DOI:
- 10.1103/PhysRevD.102.021301

[18]

Trans-Planckian censorship, inflation and excited initial states for perturbations

Suddhasattwa Brahma
(
- McGill U.
)

- Phys.Rev.D 101 (2020) 2, 023526
•
e-Print:
- 1910.04741
•
DOI:
- 10.1103/PhysRevD.101.023526

[19]

Trans-Planckian censorship conjecture and nonthermal post-inflationary history

Mansi Dhuria
(
- IITRAM, Ahmedabad
)
,
Gaurav Goswami
(
- Ahmedabad U.
)

- Phys.Rev.D 100 (2019) 12, 123518
•
e-Print:
- 1910.06233
•
DOI:
- 10.1103/PhysRevD.100.123518

[20]

De Sitter vacua in string theory

Shamit Kachru
(
- Stanford U., Phys. Dept. and
- SLAC
)
,
Renata Kallosh
(
- Stanford U., Phys. Dept.
)
,
Andrei D. Linde
(
- Stanford U., Phys. Dept.
)
,
Sandip P. Trivedi
(
- Tata Inst.
)

- Phys.Rev.D 68 (2003) 046005
•
e-Print:
- hep-th/0301240
•
DOI:
- 10.1103/PhysRevD.68.046005

[21]

Systematics of moduli stabilisation in Calabi-Yau flux compactifications

Vijay Balasubramanian
(
- Pennsylvania U.
)
,
Per Berglund
(
- New Hampshire U.
)
,
Joseph P. Conlon
(
- Cambridge U., DAMTP
)
,
Fernando Quevedo
(
- Cambridge U., DAMTP
)

- JHEP 03 (2005) 007
•
e-Print:
- hep-th/0502058
•
DOI:
- 10.1088/1126-6708/2005/03/007

[22]

Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking

Joseph P. Conlon
(
- Cambridge U., DAMTP
)
,
Fernando Quevedo
(
- Cambridge U., DAMTP
)
,
Kerim Suruliz
(
- Cambridge U., DAMTP
)

- JHEP 08 (2005) 007
•
e-Print:
- hep-th/0505076
•
DOI:
- 10.1088/1126-6708/2005/08/007

[23]

Explaining the Electroweak Scale and Stabilizing Moduli in M Theory

Bobby Samir Acharya
(
- ICTP, Trieste and
- INFN, Trieste
)
,
Konstantin Bobkov
(
- Michigan U., MCTP
)
,
Gordon L. Kane
(
- Michigan U., MCTP
)
,
Piyush Kumar
(
- Michigan U., MCTP
)
,
Jing Shao
(
- Michigan U., MCTP
)

- Phys.Rev.D 76 (2007) 126010
•
e-Print:
- hep-th/0701034
•
DOI:
- 10.1103/PhysRevD.76.126010

[24]

Cosmological Moduli and the Post-Inflationary Universe: A Critical Review

- Int.J.Mod.Phys.D 24 (2015) 08, 1530022
•
e-Print:
- 1502.07746
•
DOI:
- 10.1142/S0218271815300220

[25]

Inflationary scale, reheating scale, and pre-BBN cosmology with scalar fields

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

- Phys.Rev.D 98 (2018) 12, 123511
•
e-Print:
- 1807.05916
•
DOI:
- 10.1103/PhysRevD.98.123511

1-25 of 37
1
2
25 / page