Low reheating temperatures in monomial and binomial inflationary models

被引：58

作者：

Rehagen, Thomas ^{[1
]}

Gelmini, Graciela B. ^{[1
]}

机构：

[1] UCLA, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2015年 / 06期

基金：

美国国家科学基金会;

关键词：

inflation; physics of the early universe; UNIVERSE SCENARIO; CONSTRAINTS; FLUCTUATIONS; COSMOLOGY; FLATNESS; HORIZON;

D O I：

10.1088/1475-7516/2015/06/039

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the allowed range of reheating temperature values in light of the Planck 2015 results and the recent joint analysis of Cosmic Microwave Background (CMB) data from the BICEP2/Keck Array and Planck experiments, using monomial and binomial inflationary potentials. While the well studied phi(2) inflationary potential is no longer favored by current CMB data, as well as phi(p) with p > 2, a phi(1) potential and canonical reheating (w(re) = 0) provide a good fit to the CMB measurements. In this last case, we find that the Planck 2015 68% confidence limit upper bound on the spectral index, n(s), implies an upper bound on the reheating temperature of T-re less than or similar to 6 x 10(10) GeV, and excludes instantaneous reheating. The low reheating temperatures allowed by this model open the possibility that dark matter could be produced during the reheating period instead of when the Universe is radiation dominated, which could lead to very different predictions for the relic density and momentum distribution of WIMPs, sterile neutrinos, and axions. We also study binomial inflationary potentials and show the effects of a small departure from a phi(1) potential. We find that as a subdominant phi(2) term in the potential increases, first instantaneous reheating becomes allowed, and then the lowest possible reheating temperature of T-re = 4MeV is excluded by the Planck 2015 68% confidence limit.

引用

页数：17

共 55 条

[1] PARTICLE-PRODUCTION IN THE NEW INFLATIONARY COSMOLOGY [J].

ABBOTT, LF ;

FARHI, E ;

WISE, MB .

PHYSICS LETTERS B, 1982, 117 (1-2) :29-33

[2] Joint Analysis of BICEP2/Keck Array and Planck Data [J].

Ade, P. A. R. ;

Aghanim, N. ;

Ahmed, Z. ;

Aikin, R. W. ;

Alexander, K. D. ;

Arnaud, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barkats, D. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Benton, S. J. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bischoff, C. A. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Brevik, J. A. ;

Bucher, M. ;

Buder, I. ;

Bullock, E. ;

Burigana, C. ;

Butler, R. C. ;

Buza, V. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Christensen, P. R. ;

Colombo, L. P. L. ;

Combet, C. ;

Connors, J. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. .

PHYSICAL REVIEW LETTERS, 2015, 114 (10) :1-17

[3] Detection of B-Mode Polarization at Degree Angular Scales by BICEP2 [J].

Ade, P. A. R. ;

Aikin, R. W. ;

Barkats, D. ;

Benton, S. J. ;

Bischoff, C. A. ;

Bock, J. J. ;

Brevik, J. A. ;

Buder, I. ;

Bullock, E. ;

Dowell, C. D. ;

Duband, L. ;

Filippini, J. P. ;

Fliescher, S. ;

Golwala, S. R. ;

Halpern, M. ;

Hasselfield, M. ;

Hildebrandt, S. R. ;

Hilton, G. C. ;

Hristov, V. V. ;

Irwin, K. D. ;

Karkare, K. S. ;

Kaufman, J. P. ;

Keating, B. G. ;

Kernasovskiy, S. A. ;

Kovac, J. M. ;

Kuo, C. L. ;

Leitch, E. M. ;

Lueker, M. ;

Mason, P. ;

Netterfield, C. B. ;

Nguyen, H. T. ;

O'Brient, R. ;

Ogburn, R. W. ;

Orlando, A. ;

Pryke, C. ;

Reintsema, C. D. ;

Richter, S. ;

Schwarz, R. ;

Sheehy, C. D. ;

Staniszewski, Z. K. ;

Sudiwala, R. V. ;

Teply, G. P. ;

Tolan, J. E. ;

Turner, A. D. ;

Vieregg, A. G. ;

Wong, C. L. ;

Yoon, K. W. .

PHYSICAL REVIEW LETTERS, 2014, 112 (24)

[4]

Ade P.A.R., ARXIV150201589

[5] COSMOLOGY FOR GRAND UNIFIED THEORIES WITH RADIATIVELY INDUCED SYMMETRY-BREAKING [J].

ALBRECHT, A ;

STEINHARDT, PJ .

PHYSICAL REVIEW LETTERS, 1982, 48 (17) :1220-1223

[6] REHEATING AN INFLATIONARY UNIVERSE [J].

ALBRECHT, A ;

STEINHARDT, PJ ;

TURNER, MS ;

WILCZEK, F .

PHYSICAL REVIEW LETTERS, 1982, 48 (20) :1437-1440

[7] Reheating in Inflationary Cosmology: Theory and Applications [J].

Allahverdi, Rouzbeh ;

Brandenberger, Robert ;

Cyr-Racine, Francis-Yan ;

Mazumdar, Anupam .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, VOL 60, 2010, 60 :27-51

[8]

[Anonymous], ARXIV150200643

[9]

[Anonymous], ARXIV150205733

[10] SPONTANEOUS CREATION OF ALMOST SCALE-FREE DENSITY PERTURBATIONS IN AN INFLATIONARY UNIVERSE [J].

BARDEEN, JM ;

STEINHARDT, PJ ;

TURNER, MS .

PHYSICAL REVIEW D, 1983, 28 (04) :679-693

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