Viable anisotropic inflation and reheating in the tachyon model

被引：1

作者：

Rashidi, Narges ^{[1
]}

机构：

[1] Univ Mazandaran, Fac Sci, Dept Theoret Phys, POB 47416-95447, Babolsar, Iran

来源：

EUROPEAN PHYSICAL JOURNAL C | 2024年 / 84卷 / 01期

关键词：

POWER-LAW INFLATION; PARTICLE-PRODUCTION; FLATNESS; UNIVERSE; HORIZON; SCALAR; FIELD;

D O I：

10.1140/epjc/s10052-024-12466-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the intermediate tachyon inflation in an anisotropic background. By using the Friedmann equations obtained in the anisotropic geometry, we obtain the slow-roll parameters in the tachyon model. The presence of the anisotropic effects in the slow-roll parameters changes the perturbation parameters in our setup which may change its observational viability. To check this, we perform a numerical analysis and test the results with Planck2018 TT, TE, EE +lowE+lensing+BK14(18)+BAO data. We show that the intermediate anisotropic inflation in some ranges of the anisotropic and intermediate parameters is observationally viable. We also show that the equilateral amplitude of the non-gaussianity in our model is of the order of 10-2-10-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$10<^>{-2}-10<^>{-1}$$\end{document}. By studying the reheating process in our setup, we find that it is possible to have instantaneous reheating in this model. We also find that the temperature during the reheating in our setup is consistent with Big-Bang nucleosynthesis.

引用

页数：17

共 78 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] Planck 2018 results: VIII. Gravitational lensing [J].

Aghanim, N. ;

Akrami, Y. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Benabed, K. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Carron, J. ;

Challinor, A. ;

Chiang, H. C. ;

Colombo, L. P. L. ;

Combet, C. ;

Crill, B. P. ;

Cuttaia, F. ;

de Bernardis, P. ;

de Zotti, G. ;

Delabrouille, J. ;

Di Valentino, E. ;

Diego, J. M. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Efstathiou, G. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Fantaye, Y. ;

Fernandez-Cobos, R. ;

Finelli, F. ;

Forastieri, F. ;

Frailis, M. ;

Fraisse, A. A. ;

Franceschi, E. .

ASTRONOMY & ASTROPHYSICS, 2020, 641 (641)

[3] Planck 2018 results: X. Constraints on inflation [J].

Akrami, Y. ;

Arroja, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Benabed, K. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Carron, J. ;

Challinor, A. ;

Chiang, H. C. ;

Colombo, L. P. L. ;

Combet, C. ;

Contreras, D. ;

Crill, B. P. ;

Cuttaia, F. ;

de Bernardis, P. ;

de Zotti, G. ;

Delabrouille, J. ;

Delouis, J. -M. ;

Di Valentino, E. ;

Diego, J. M. ;

Donzelli, S. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Dusini, S. ;

Efstathiou, G. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Fantaye, Y. ;

Fergusson, J. .

ASTRONOMY & ASTROPHYSICS, 2020, 641 (641)

[4] Planck 2018 results: VII. Isotropy and statistics of the CMB [J].

Akrami, Y. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Benabed, K. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Casaponsa, B. ;

Chiang, H. C. ;

Colombo, L. P. L. ;

Combet, C. ;

Contreras, D. ;

Crill, B. P. ;

de Bernardis, P. ;

de Zotti, G. ;

Delabrouille, J. ;

Delouis, J. -M. ;

Di Valentino, E. ;

Diego, J. M. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Efstathiou, G. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Fantaye, Y. ;

Fernandez-Cobos, R. ;

Finelli, F. ;

Frailis, M. ;

Fraisse, A. A. ;

Franceschi, E. ;

Frolov, A. ;

Galeotta, S. .

ASTRONOMY & ASTROPHYSICS, 2020, 641

[5]

Akrami Y., arXiv

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

ALBRECHT, A ;

STEINHARDT, PJ .

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

[7] REHEATING AN INFLATIONARY UNIVERSE [J].

ALBRECHT, A ;

STEINHARDT, PJ ;

TURNER, MS ;

WILCZEK, F .

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

[8]

[Anonymous], 1990, Particle Physics and Inflationaryosmology

[9] Duality linking standard and tachyon scalar field cosmologies [J].

Avelino, P. P. ;

Bazeia, D. ;

Losano, L. ;

Oliveira, J. C. R. E. ;

Pavan, A. B. .

PHYSICAL REVIEW D, 2010, 82 (06)

[10] INHOMOGENEOUS COSMOLOGIES WITH COSMOLOGICAL CONSTANT [J].

BARROW, JD ;

STEINSCHABES, J .

PHYSICS LETTERS A, 1984, 103 (6-7) :315-317

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