A new parametrization for dark energy density and future deceleration - INSPIRE

DataBETA

A new parametrization for dark energy density and future deceleration

Abdulla Al Mamon

Dec 21, 2017

10 pages

Published in:

Mod.Phys.Lett.A 33 (2018) 20, 1850113

Published: Jun 21, 2018

e-Print:

1712.07855 [gr-qc]

DOI:

10.1142/S0217732318501134

View in:

reference search13 citations

Citations per year

Abstract: (WSP)

In this work, we have proposed a general dark energy density parametrization to study the evolution of the universe. We have also constrained the model parameters using the combination of Type Ia supernova (SNIa), baryonic acoustic oscillations (BAO), cosmic microwave background radiation (CMB) and observational H(z) datasets. For the H(z) dataset, we have used the direct observations of the Hubble rate, from the radial BAO size and the cosmic chronometer methods. Our result indicates that the SNIa + H(z) + BAO/CMB dataset does not favor the ΛCDM model at more than 2σ confidence level. Furthermore, we have also measured the percentage deviation in the evolution of the normalized Hubble parameter for the present model compared to a ΛCDM model, and the corresponding deviation is found to be 4–5% at low redshifts (z ∼ 0.5). Finally, we have also investigated whether the deceleration parameter q may have more than one transition during the evolution of the universe. The present model shows a transient accelerating phase, in which the universe was decelerated in the past and is presently accelerating, but will return to a decelerating phase in the near future. This result is in great contrast to the ΛCDM scenario, which predicts that the cosmic acceleration must remain forever.

Note:

6 pages, 3 figures, title has been changed, references added, revised version accepted for publication in MPLA

98.80.Hw
Dark energy density
future deceleration

References(51)

Figures(5)

[1]

Measurements of $\Omega$ and $\Lambda$ from 42 High Redshift Supernovae

Supernova Cosmology Project

Collaboration

•

S. Perlmutter
(
- UC, Berkeley, CfPA
)

et al.

- Astrophys.J. 517 (1999) 565-586
•
e-Print:
- astro-ph/9812133
•
DOI:
- 10.1086/307221

[2]

Observational evidence from supernovae for an accelerating universe and a cosmological constant

et al.

- Astron.J. 116 (1998) 1009-1038
•
e-Print:
- astro-ph/9805201
•
DOI:
- 10.1086/300499

[3]

Cosmological parameters from SDSS and WMAP

SDSS

Collaboration

•

Max Tegmark
(
- Pennsylvania U. and
- MIT
)

et al.

- Phys.Rev.D 69 (2004) 103501
•
e-Print:
- astro-ph/0310723
•
DOI:
- 10.1103/PhysRevD.69.103501

[4]

Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: Constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy

SDSS

Collaboration

•

Uros Seljak
(
- Princeton U. and
- ICTP, Trieste
)

et al.

- Phys.Rev.D 71 (2005) 103515
•
e-Print:
- astro-ph/0407372
•
DOI:
- 10.1103/PhysRevD.71.103515

[5]

Planck 2015 results. XIII. Cosmological parameters

Planck

Collaboration

•

P.A.R. Ade
(
- Cardiff U.
)

et al.

- Astron.Astrophys. 594 (2016) A13
•
e-Print:
- 1502.01589
•
DOI:
- 10.1051/0004-6361/201525830

[6]

Planck 2013 results. XVI. Cosmological parameters

Planck

Collaboration

•

P.A.R. Ade
(
- Cardiff U.
)

et al.

- Astron.Astrophys. 571 (2014) A16
•
e-Print:
- 1303.5076
•
DOI:
- 10.1051/0004-6361/201321591

[7]

Detection of $B$ -Mode Polarization at Degree Angular Scales by BICEP2

BICEP2

Collaboration

•

P.A.R. Ade
(
- Cardiff U.
)

et al.

- Phys.Rev.Lett. 112 (2014) 24, 241101
•
e-Print:
- 1403.3985
•
DOI:
- 10.1103/PhysRevLett.112.241101

[8]

Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation

WMAP

Collaboration

•

E. Komatsu
(
- Texas U.
)

et al.

- Astrophys.J.Suppl. 192 (2011) 18
•
e-Print:
- 1001.4538
•
DOI:
- 10.1088/0067-0049/192/2/18

[9]

Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results

WMAP

Collaboration

•

G. Hinshaw
(
- British Columbia U.
)

et al.

- Astrophys.J.Suppl. 208 (2013) 19
•
e-Print:
- 1212.5226
•
DOI:
- 10.1088/0067-0049/208/2/19

[10]

Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies

SDSS

Collaboration

•

Daniel J. Eisenstein
(
- Arizona U.
)

et al.

- Astrophys.J. 633 (2005) 560-574
•
e-Print:
- astro-ph/0501171
•
DOI:
- 10.1086/466512

[11]

The Case for a positive cosmological Lambda term

Varun Sahni
(
- IUCAA, Pune
)
,
Alexei A. Starobinsky
(
- Landau Inst.
)

- Int.J.Mod.Phys.D 9 (2000) 373-444
•
e-Print:
- astro-ph/9904398
•
DOI:
- 10.1142/S0218271800000542

[12]

Dynamics of dark energy

Edmund J. Copeland
(
- Nottingham U.
)
,
M. Sami
(
- Jamia Millia Islamia
)
,
Shinji Tsujikawa
(
- Gunma Coll. Tech.
)

- Int.J.Mod.Phys.D 15 (2006) 1753-1936
•
e-Print:
- hep-th/0603057
•
DOI:
- 10.1142/S021827180600942X

[13]

The Cosmological Constant and Dark Energy

P.J.E. Peebles
(
- Princeton U.
)
,
Bharat Ratra
(
- Kansas State U.
)

- Rev.Mod.Phys. 75 (2003) 559-606,
•
e-Print:
- astro-ph/0207347
•
DOI:
- 10.1103/RevModPhys.75.559

[14]

Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests

Kazuharu Bamba
(
- KMI, Nagoya
)
,
Salvatore Capozziello
(
- INFN, Naples and
- Naples U.
)
,
Shin'ichi Nojiri
(
- Nagoya U. and
- KMI, Nagoya
)
,
Sergei D. Odintsov
(
- Eurasian Nat. U., Astana and
- Tomsk Pedagogical Inst. and
- Barcelona, IEEC and
- ICREA, Barcelona
)

- Astrophys.Space Sci. 342 (2012) 155-228
•
e-Print:
- 1205.3421
•
DOI:
- 10.1007/s10509-012-1181-8

[15]

The Cosmological Constant Problem

Steven Weinberg
(
- Texas U.
)

- Rev.Mod.Phys. 61 (1989) 1-23,
•
DOI:
- 10.1103/RevModPhys.61.1

[16]

P.J. Steinhardt

- Phys.Rev.Lett. 59 (1999) 123504

[17]

Accelerating universes with scaling dark matter

Michel Chevallier
(
- Tours U., CNRS
)
,
David Polarski
(
- Tours U., CNRS and
- Montpellier U.
)

- Int.J.Mod.Phys.D 10 (2001) 213-224
•
e-Print:
- gr-qc/0009008
•
DOI:
- 10.1142/S0218271801000822

[18]

Exploring the expansion history of the universe

Eric V. Linder
(
- LBL, Berkeley
)

- Phys.Rev.Lett. 90 (2003) 091301
•
e-Print:
- astro-ph/0208512
•
DOI:
- 10.1103/PhysRevLett.90.091301

[19]

Prospects for probing the dark energy via supernova distance measurements

Dragan Huterer
(
- Chicago U., EFI
)
,
Michael S. Turner
(
)

- Phys.Rev.D 60 (1999) 081301
•
e-Print:
- astro-ph/9808133
•
DOI:
- 10.1103/PhysRevD.60.081301

[20]

Opportunities for future supernova studies of cosmic acceleration

Jochen Weller
(
- UC, Davis and
- Imperial Coll., London
)
,
Andreas Albrecht
(
- UC, Davis
)

- Phys.Rev.Lett. 86 (2001) 1939-1942
•
e-Print:
- astro-ph/0008314
•
DOI:
- 10.1103/PhysRevLett.86.1939

[21]

Measuring time dependence of dark energy density from type Ia supernova data

Yun Wang
(
- Notre Dame U.
)
,
Peter M. Garnavich
(
- Notre Dame U.
)

- Astrophys.J. 552 (2001) 445
•
e-Print:
- astro-ph/0101040
•
DOI:
- 10.1086/320552

[22]

Measuring the equation of state of the universe: Pitfalls and prospects

Irit Maor
(
- Ben Gurion U. of Negev
)
,
Ram Brustein
(
- Ben Gurion U. of Negev
)
,
Jeff McMahon
(
- Princeton U.
)
,
Paul J. Steinhardt
(
- Princeton U.
)

- Phys.Rev.D 65 (2002) 123003
•
e-Print:
- astro-ph/0112526
•
DOI:
- 10.1103/PhysRevD.65.123003

[23]

No evidence for dynamical dark energy in two models

Deng Wang
(
- Nankai U.
)
,
Xin-He Meng
(
- Nankai U.
)

- Phys.Rev.D 96 (2017) 10, 103516
•
e-Print:
- 1709.01074
•
DOI:
- 10.1103/PhysRevD.96.103516

[24]

Eur. Phys. J. C 77, Article 29

A.A. Mamon
,
K. Bamba
,
S. Das

[25]

Dynamical dark energy in light of the latest observations

Gong-Bo Zhao
(
- NAOC, Beijing and
- Portsmouth U., ICG
)
,
Marco Raveri
(
- Chicago U., EFI and
- Chicago U., KICP and
- Leiden U.
)
,
Levon Pogosian
(
- Simon Fraser U. and
- Portsmouth U., ICG
)
,
Yuting Wang
(
- NAOC, Beijing and
- Portsmouth U., ICG
)
,
Robert G. Crittenden
(
- Portsmouth U., ICG
)

et al.

- Nature Astron. 1 (2017) 9, 627-632
•
e-Print:
- 1701.08165
•
DOI:
- 10.1038/s41550-017-0216-z

1-25 of 51
1
2
3
25 / page