Cosmological constraints on string scale and coupling arising from tachyonic instability - INSPIRE

DataBETA

Cosmological constraints on string scale and coupling arising from tachyonic instability

Kari Enqvist
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)
,
Asko Jokinen
(
- Nordita
)
,
Anupam Mazumdar
(
- Nordita
)
,
Tuomas Multamaki
(
- Nordita
)
,
Antti Vaihkonen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)

Feb, 2005

12 pages

Published in:

JHEP 08 (2005) 084

e-Print:

hep-th/0502185 [hep-th]

DOI:

10.1088/1126-6708/2005/08/084

Report number:

NORDITA-2005-18,
HIP-2005-07-TH

View in:

reference search28 citations

Citations per year

Abstract:

We demonstrate that string motivated inflation ending via tachyonic instability leaves a detectable imprint on the cosmic microwave background (CMB) radiation by virtue of the excitation of non-Gaussian gravitational fluctuations. The present WMAP bound on non-Gaussianity is shown to constrain the string scale by

M_S/M_P\leq 10^{-4}

for string coupling

g_{s}<0.1

, hence improving the existing bounds. If tachyon fluctuations during inflation are not negligible, we find the stringent constraint

g_s\sim 10^{-9}

for

M_{S}/M_{P}<10^{-3}

. This case may soon be ruled out by the forthcoming CMB non-Gaussinianity bounds.

NON-GAUSSIANITY
TACHYONS
STRINGS
INFLATION
cosmological model
string model
fluctuation
tachyon
stability
numerical calculations

References(34)

Figures(0)

Brane inflation

G.R. Dvali
(
- New York U. and
- ICTP, Trieste
)
,
S.H.Henry Tye
(
- Cornell U., LNS
)

- Phys.Lett.B 450 (1999) 72-82
•
e-Print:
- hep-ph/9812483
•
DOI:
- 10.1016/S0370-2693(99)00132-X

The Inflationary brane anti-brane universe

C.P. Burgess
(
- Princeton, Inst. Advanced Study and
- McGill U.
)
,
M. Majumdar
(
- Cambridge U., DAMTP
)
,
D. Nolte
(
- Princeton, Inst. Advanced Study
)
,
F. Quevedo
(
- Cambridge U., DAMTP
)
,
G. Rajesh
(
- Princeton, Inst. Advanced Study
)

et al.

- JHEP 07 (2001) 047
•
e-Print:
- hep-th/0105204
•
DOI:
- 10.1088/1126-6708/2001/07/047

D-brane inflation

G.R. Dvali
(
- New York U.
)
,
Q. Shafi
(
- Delaware U., Bartol Inst.
)
,
S. Solganik
(
- New York U.
)

e-Print:
- hep-th/0105203

Inflation from D - anti-D-brane annihilation

Stephon H.S. Alexander
(
- Imperial Coll., London
)

- Phys.Rev.D 65 (2002) 023507
•
e-Print:
- hep-th/0105032
•
DOI:
- 10.1103/PhysRevD.65.023507

Inflationary scenarios from branes at angles

- JHEP 01 (2002) 036
•
e-Print:
- hep-th/0112147
•
DOI:
- 10.1088/1126-6708/2002/01/036

Recombination of intersecting D-branes and cosmological inflation

M. Gomez-Reino
(
- Cambridge U., DAMTP
)
,
I. Zavala
(
- Cambridge U., DAMTP
)

- JHEP 09 (2002) 020
•
e-Print:
- hep-th/0207278
•
DOI:
- 10.1088/1126-6708/2002/09/020

String theory and hybrid inflation / acceleration

- JHEP 12 (2001) 027
•
e-Print:
- hep-th/0110271
•
DOI:
- 10.1088/1126-6708/2001/12/027

D3 / D7 inflationary model and M theory

- Phys.Rev.D 65 (2002) 126002
•
e-Print:
- hep-th/0203019
•
DOI:
- 10.1103/PhysRevD.65.126002

Inflation in warped geometries

Alex Buchel
(
- Perimeter Inst. Theor. Phys. and
- Western Ontario U.
)
,
Radu Roiban
(
- UC, Santa Barbara
)

- Phys.Lett.B 590 (2004) 284-294
•
e-Print:
- hep-th/0311154
•
DOI:
- 10.1016/j.physletb.2004.03.082

An Inflationary model in string theory

Norihiro Iizuka
(
- Tata Inst.
)
,
Sandip P. Trivedi
(
- Tata Inst.
)

- Phys.Rev.D 70 (2004) 043519
•
e-Print:
- hep-th/0403203
•
DOI:
- 10.1103/PhysRevD.70.043519

Braneworld inflation

Alex Buchel
(
- Western Ontario U. and
- Perimeter Inst. Theor. Phys.
)
,
Ahmad Ghodsi
(
- IPM, Tehran
)

- Phys.Rev.D 70 (2004) 126008
•
e-Print:
- hep-th/0404151
•
DOI:
- 10.1103/PhysRevD.70.126008

Assisted inflation via tachyon condensation

Anupam Mazumdar
(
- ICTP, Trieste
)
,
Sudhakar Panda
(
- Harish-Chandra Res. Inst. and
- ICTP, Trieste
)
,
Abdel Perez-Lorenzana
(
- ICTP, Trieste and
- CINVESTAV, IPN
)

- Nucl.Phys.B 614 (2001) 101-116
•
e-Print:
- hep-ph/0107058
•
DOI:
- 10.1016/S0550-3213(01)00410-2

Field theory of tachyon matter

Ashoke Sen
(
- Harish-Chandra Res. Inst. and
- Penn State U.
)

- Mod.Phys.Lett.A 17 (2002) 1797-1804
•
e-Print:
- hep-th/0204143
•
DOI:
- 10.1142/S0217732302008071

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

Towards inflation in string theory

et al.

- JCAP 10 (2003) 013
•
e-Print:
- hep-th/0308055
•
DOI:
- 10.1088/1475-7516/2003/10/013

Racetrack inflation

J.J. Blanco-Pillado
(
- New York U., CCPP
)
,
C.P. Burgess
(
- McGill U.
)
,
James M. Cline
(
- McGill U.
)
,
C. Escoda
(
- Cambridge U., DAMTP
)
,
M. Gomez-Reino
(
- Brandeis U.
)

et al.

- JHEP 11 (2004) 063
•
e-Print:
- hep-th/0406230
•
DOI:
- 10.1088/1126-6708/2004/11/063

Multiple inflation, cosmic string networks and the string landscape

C.P. Burgess
(
- McGill U. and
- McMaster U. and
- Perimeter Inst. Theor. Phys.
)
,
Richard Easther
(
- Yale U.
)
,
Anupam Mazumdar
(
- Nordita
)
,
David F. Mota
(
- Inst. Theor. Astrophys., Oslo and
- Oxford U.
)
,
Tuomas Multamaki
(
- Nordita
)

- JHEP 05 (2005) 067
•
e-Print:
- hep-th/0501125
•
DOI:
- 10.1088/1126-6708/2005/05/067

Non-Gaussianity from inflation: Theory and observations

N. Bartolo
(
- Sussex U., Astron. Ctr.
)
,
E. Komatsu
(
- Texas U., Astron. Dept.
)
,
Sabino Matarrese
(
- Padua U. and
- INFN, Padua
)
,
A. Riotto
(
- INFN, Padua
)

- Phys.Rept. 402 (2004) 103-266
•
e-Print:
- astro-ph/0406398
•
DOI:
- 10.1016/j.physrep.2004.08.022

Dynamics of symmetry breaking and tachyonic preheating

et al.

- Phys.Rev.Lett. 87 (2001) 011601
•
e-Print:
- hep-ph/0012142
•
DOI:
- 10.1103/PhysRevLett.87.011601

Non-Gaussianity in braneworld and tachyon inflation

Gianluca Calcagni
(
- Parma U.
)

- JCAP 10 (2005) 009
•
e-Print:
- astro-ph/0411773
•
DOI:
- 10.1088/1475-7516/2005/10/009

Non-Gaussianity from instant and tachyonic preheating

Kari Enqvist
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)
,
Asko Jokinen
(
- Nordita
)
,
Anupam Mazumdar
(
- Nordita
)
,
Tuomas Multamaki
(
- Nordita
)
,
Antti Vaihkonen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)

- JCAP 03 (2005) 010
•
e-Print:
- hep-ph/0501076
•
DOI:
- 10.1088/1475-7516/2005/03/010

Non-Gaussianity from preheating

Kari Enqvist
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)
,
Asko Jokinen
(
- Nordita
)
,
Anupam Mazumdar
(
- Nordita
)
,
Tuomas Multamaki
(
- Nordita
)
,
Antti Vaihkonen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)

- Phys.Rev.Lett. 94 (2005) 161301
•
e-Print:
- astro-ph/0411394
•
DOI:
- 10.1103/PhysRevLett.94.161301

First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: tests of gaussianity

WMAP

Collaboration

•

E. Komatsu

et al.

- Astrophys.J.Suppl. 148 (2003) 119-134
•
e-Print:
- astro-ph/0302223
•
DOI:
- 10.1086/377220

On exact tachyon potential in open string field theory

Anton A. Gerasimov
(
- Moscow, ITEP
)
,
Samson L. Shatashvili
(
- Yale U.
)

- JHEP 10 (2000) 034
•
e-Print:
- hep-th/0009103
•
DOI:
- 10.1088/1126-6708/2000/10/034

Remarks on tachyon condensation in superstring field theory

David Kutasov
(
- Chicago U.
)
,
Marcos Marino
(
- Rutgers U., Piscataway
)
,
Gregory W. Moore
(
- Rutgers U., Piscataway
)

e-Print:
- hep-th/0010108

1-25 of 34
1
2
25 / page