Correlating CMB spectral distortions with temperature : what do we learn on inflation?

被引：16

作者：

Dimastrogiovanni, Emanuela ^{[1
,2
]}

Emami, Razieh ^{[3
]}

机构：

[1] Arizona State Univ, Dept Phys, Tempe, AZ 85827 USA

[2] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85827 USA

[3] Hong Kong Univ Sci & Technol, Inst Adv Study, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 12期

关键词：

cosmological parameters from CMBR; inflation; non-gaussianity; physics of the early universe; POWER SPECTRUM; QUANTUM FLUCTUATIONS; PLANCKIAN PHYSICS; CONSTRAINTS; PERTURBATIONS; FEATURES; HORIZON; SCENARIO; CREATION; CURVATON;

D O I：

10.1088/1475-7516/2016/12/015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Probing correlations among short and long-wavelength cosmological fluctuations is known to be decisive for deepening the current understanding of inflation at the microphysical level. Spectral distortions of the CMB can be caused by dissipation of cosmological perturbations when they re-enter Hubble after inflation. Correlating spectral distortions with temperature anisotropies will thus provide the opportunity to greatly enlarge the range of scales over which squeezed limits can be tested, opening up a new window on inflation complementing the ones currently probed with CMB and LSS. In this paper we discuss a variety of inflationary mechanisms that can be efficiently constrained with distortion-temperature correlations. For some of these realizations (representative of large classes of models) we derive quantitative predictions for the squeezed limit bispectra, finding that their amplitudes are above the sensitivity limits of an experiment such as the proposed PIXIE.

引用

页数：35

共 158 条

[1] Primordial anisotropies in gauged hybrid inflation [J].

Abolhasani, Ali Akbar ;

Emami, Razieh ;

Firouzjahi, Hassan .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2014, (05)

[2] Heavy fields, reduced speeds of sound, and decoupling during inflation [J].

Achucarro, Ana ;

Atal, Vicente ;

Cespedes, Sebastian ;

Gong, Jinn-Ouk ;

Palma, Gonzalo A. ;

Patil, Subodh P. .

PHYSICAL REVIEW D, 2012, 86 (12)

[3] Mass hierarchies and nondecoupling in multi-scalar-field dynamics [J].

Achucarro, Ana ;

Gong, Jinn-Ouk ;

Hardeman, Sjoerd ;

Palma, Gonzalo A. ;

Patil, Subodh P. .

PHYSICAL REVIEW D, 2011, 84 (04)

[4] Inflationary perturbations from a potential with a step [J].

Adams, J ;

Cresswell, B ;

Easther, R .

PHYSICAL REVIEW D, 2001, 64 (12) :6

[5] Multiple inflation [J].

Adams, JA ;

Ross, GG ;

Sarkar, S .

NUCLEAR PHYSICS B, 1997, 503 (1-2) :405-425

[6] Planck 2015 results XVII. Constraints on primordial non-Gaussianity [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Arrojam, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[7] Planck 2015 results XX. Constraints on inflation [J].