Why is the universe accelerating? - INSPIRE

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Why is the universe accelerating?

Sean M. Carroll
(
- Chicago U., EFI and
- Chicago U., KICP and
- Santa Barbara, KITP
)

Oct, 2003

22 pages

Part of The new cosmology. Proceedings, Conference on Strings and Cosmology, College Station, USA, March 14-17, 2004, and Mitchell Symposium on Observational Cosmology, College Station, USA, April 12-16, 2004, Measuring and modeling the universe. Proceedings, Symposium, Pasadena, USA, November 17-22, 2002, 16-32

Published in:

eConf C0307282 (2003) TTH09,
AIP Conf.Proc. 743 (2004) 1, 16-32

Contribution to:

Published: Dec 14, 2004

e-Print:

astro-ph/0310342 [astro-ph]

DOI:

10.1063/1.1848314

Report number:

SSI-2003-TTH09,
NSF-KITP-03-86

View in:

ADS Abstract Service

reference search165 citations

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Abstract: (arXiv)

The universe appears to be accelerating, but the reason why is a complete mystery. The simplest explanation, a small vacuum energy (cosmological constant), raises three difficult issues: why the vacuum energy is so small, why it is not quite zero, and why it is comparable to the matter density today. I discuss these mysteries, some of their possible resolutions, and some issues confronting future observations.

98.80.Es
cosmology
acceleration
talk: Pasadena 2002/11/17
astrophysics: acceleration
vacuum state: energy
matter: density
cosmological constant
dark energy
numerical calculations: interpretation of experiments

References(115)

Figures(0)

Coupled quintessence

Luca Amendola
(
- Rome Observ.
)

- Phys.Rev.D 62 (2000) 043511
•
e-Print:
- astro-ph/9908023
•
DOI:
- 10.1103/PhysRevD.62.043511

Dark matter with time dependent mass

The Hierarchy problem and new dimensions at a millimeter

Nima Arkani-Hamed
(
- SLAC
)
,
Savas Dimopoulos
(
- Stanford U., Phys. Dept.
)
,
G.R. Dvali
(
- ICTP, Trieste
)

- Phys.Lett.B 429 (1998) 263-272
•
e-Print:
- hep-ph/9803315
•
DOI:
- 10.1016/S0370-2693(98)00466-3

Nonlocal modification of gravity and the cosmological constant problem

Nima Arkani-Hamed
(
- Harvard U., Phys. Dept.
)
,
Savas Dimopoulos
(
- Stanford U., Phys. Dept.
)
,
Gia Dvali
(
- New York U.
)
,
Gregory Gabadadze
(
- CERN
)

e-Print:
- hep-th/0209227

A Small cosmological constant from a large extra dimension

Nima Arkani-Hamed
(
- UC, Berkeley and
- LBL, Berkeley
)
,
Savas Dimopoulos
(
- Stanford U., Phys. Dept.
)
,
Nemanja Kaloper
(
- Stanford U., Phys. Dept.
)
,
Raman Sundrum
(
- Stanford U., Phys. Dept.
)

- Phys.Lett.B 480 (2000) 193-199
•
e-Print:
- hep-th/0001197
•
DOI:
- 10.1016/S0370-2693(00)00359-2

Predictions and observations in theories with varying couplings

Christian Armendariz-Picon
(
- Chicago U., EFI and
- Chicago U., Astron. Astrophys. Ctr.
)

- Phys.Rev.D 66 (2002) 064008
•
e-Print:
- astro-ph/0205187
•
DOI:
- 10.1103/PhysRevD.66.064008

A Dynamical solution to the problem of a small cosmological constant and late time cosmic acceleration

C. Armendariz-Picon
(
- Munich U.
)
,
Viatcheslav F. Mukhanov
(
- Munich U.
)
,
Paul J. Steinhardt
(
- Princeton U.
)

- Phys.Rev.Lett. 85 (2000) 4438-4441
•
e-Print:
- astro-ph/0004134
•
DOI:
- 10.1103/PhysRevLett.85.4438

Counting flux vacua

- JHEP 01 (2004) 060
•
e-Print:
- hep-th/0307049
•
DOI:
- 10.1088/1126-6708/2004/01/060

Supersymmetry, the cosmological constant, and a theory of quantum gravity in our universe

T. Banks
(
- UC, Santa Cruz and
- Rutgers U., Piscataway
)

- Gen.Rel.Grav. 35 (2003) 2075-2078
•
e-Print:
- hep-th/0305206
•
DOI:
- 10.1023/A:1027342603060

Is there a string theory landscape?

- JHEP 08 (2004) 058
•
e-Print:
- hep-th/0309170
•
DOI:
- 10.1088/1126-6708/2004/08/058

On anthropic solutions of the cosmological constant problem

- JHEP 01 (2001) 031
•
e-Print:
- hep-th/0007206
•
DOI:
- 10.1088/1126-6708/2001/01/031

Equation of state of the transPlanckian dark energy and the coincidence problem

- Phys.Rev.D 67 (2003) 103519
•
e-Print:
- hep-th/0205271
•
DOI:
- 10.1103/PhysRevD.67.103519

Domain wall dominated universes

Richard A. Battye
(
- Cambridge U., DAMTP
)
,
Martin Bucher
(
- Cambridge U., DAMTP
)
,
David Spergel
(
- Princeton U.
)

e-Print:
- astro-ph/9908047

Perturbation evolution with a nonminimally coupled scalar field

Rachel Bean
(
- Imperial Coll., London
)

- Phys.Rev.D 64 (2001) 123516
•
e-Print:
- astro-ph/0104464
•
DOI:
- 10.1103/PhysRevD.64.123516

fermionic partner of the quintessence field as a candidate for dark matter

- Phys.Rev.D 69 (2004) 123521
•
e-Print:
- hep-ph/0308218
•
DOI:
- 10.1103/PhysRevD.69.123521

An Alternative to the cosmological 'concordance model'

Alain Blanchard
(
- Midi-Pyrenees Observ.
)
,
Marian Douspis
(
- Oxford U.
)
,
Michael Rowan-Robinson
(
- Imperial Coll., London
)
,
Subir Sarkar
(
- Oxford U., Theor. Phys.
)

- Astron.Astrophys. 412 (2003) 35-44
•
e-Print:
- astro-ph/0304237
•
DOI:
- 10.1051/0004-6361:20031425

Quantization of four form fluxes and dynamical neutralization of the cosmological constant

- JHEP 06 (2000) 006
•
e-Print:
- hep-th/0004134
•
DOI:
- 10.1088/1126-6708/2000/06/006

Big bang nucleosynthesis predictions for precision cosmology

Scott Burles
(
- Fermilab and
- Chicago U. and
- Chicago U., EFI
)
,
Kenneth M. Nollett
(
- Chicago U. and
- Caltech
)
,
Michael S. Turner
(
- Chicago U. and
- Chicago U., EFI and
- Fermilab
)

- Astrophys.J.Lett. 552 (2001) L1-L6
•
e-Print:
- astro-ph/0010171
•
DOI:
- 10.1086/320251

A Phantom menace?

R.R. Caldwell
(
- Princeton U.
)

- Phys.Lett.B 545 (2002) 23-29
•
e-Print:
- astro-ph/9908168
•
DOI:
- 10.1016/S0370-2693(02)02589-3

Cosmological imprint of an energy component with general equation of state

R.R. Caldwell
(
- Pennsylvania U.
)
,
Rahul Dave
(
- Pennsylvania U.
)
,
Paul J. Steinhardt
(
- Pennsylvania U.
)

- Phys.Rev.Lett. 80 (1998) 1582-1585
•
e-Print:
- astro-ph/9708069
•
DOI:
- 10.1103/PhysRevLett.80.1582

Phantom energy and cosmic doomsday

Robert R. Caldwell
(
- Dartmouth Coll.
)
,
Marc Kamionkowski
(
- Caltech
)
,
Nevin N. Weinberg
(
- Caltech
)

- Phys.Rev.Lett. 91 (2003) 071301
•
e-Print:
- astro-ph/0302506
•
DOI:
- 10.1103/PhysRevLett.91.071301

Quintessence and the rest of the world

Sean M. Carroll
(
- Santa Barbara, KITP
)

- Phys.Rev.Lett. 81 (1998) 3067-3070
•
e-Print:
- astro-ph/9806099
•
DOI:
- 10.1103/PhysRevLett.81.3067

The Cosmological constant

Sean M. Carroll
(
- Chicago U., EFI
)

- Living Rev.Rel. 4 (2001) 1
•
e-Print:
- astro-ph/0004075
•
DOI:
- 10.12942/lrr-2001-1

Is Cosmic Speed-Up Due to New Gravitational Physics?

Sean M. Carroll
(
- Chicago U., EFI and
- Chicago U. and
- Chicago U., KICP
)
,
Vikram Duvvuri
(
- Chicago U., EFI and
- Chicago U. and
- Chicago U., KICP
)
,
Mark Trodden
(
- Syracuse U.
)
,
Michael S. Turner
(
- Chicago U., EFI and
- Chicago U. and
- Chicago U., KICP and
- Chicago U., Astron. Astrophys. Ctr. and
- Fermilab
)

- Phys.Rev.D 70 (2004) 043528
•
e-Print:
- astro-ph/0306438
•
DOI:
- 10.1103/PhysRevD.70.043528

Can the dark energy equation-of-state parameter $w$ be less than $−1$ ?

Sean M. Carroll
(
- Chicago U., EFI and
- Chicago U. and
- Chicago U., KICP
)
,
Mark Hoffman
(
- Chicago U., EFI and
- Chicago U. and
- Chicago U., KICP
)
,
Mark Trodden
(
- Syracuse U.
)

- Phys.Rev.D 68 (2003) 023509
•
e-Print:
- astro-ph/0301273
•
DOI:
- 10.1103/PhysRevD.68.023509

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