More accurate slow-roll approximations for inflation in scalar-tensor theories

被引：0

作者：

Pozdeeva, Ekaterina O. ^{[1
]}

Skugoreva, Maria A. ^{[2
]}

Toporensky, Alexey, V ^{[2
]}

Vernov, Sergey Yu. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Leninskiye Gory 1, Moscow 119991, Russia

[2] Lomonosov Moscow State Univ, Sternberg Astron Inst, Univ Prospect 13, Moscow 119991, Russia

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2025年 / 05期

关键词：

inflation; modified gravity; STANDARD MODEL; HIGGS; FIELD; COSMOLOGY; SCENARIO; UNIVERSE;

D O I：

10.1088/1475-7516/2025/05/081

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose new versions of the slow-roll approximation for inflationary models with nonminimally coupled scalar fields. We derive more precise expressions for the standard slow-roll parameters as functions of the scalar field. To verify the accuracy of the proposed approximations, we consider inflationary models with the induced gravity term and the fourth-order monomial potential. For specific values of the model parameters, this model is the well-known Higgs-driven inflationary model. We investigate the inflationary dynamics in the Jordan frame and come to the conclusion that the proposed versions of the slow-roll approximation are not only more accurate at the end of inflation, but also give essentially more precise estimations for the tensor-to-scalar ratio r and the amplitude of scalar perturbations As.

引用

页数：26

共 89 条

[1] INDUCED-GRAVITY INFLATION [J].

ACCETTA, FS ;

ZOLLER, DJ ;

TURNER, MS .

PHYSICAL REVIEW D, 1985, 31 (12) :3046-3051

[2] Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season [J].

Ade, P. A. R. ;

Ahmed, Z. ;

Amiri, M. ;

Barkats, D. ;

Thakur, R. Basu ;

Bischoff, C. A. ;

Beck, D. ;

Bock, J. J. ;

Boenish, H. ;

Bullock, E. ;

Buza, V ;

Cheshire, J. R. ;

Connors, J. ;

Cornelison, J. ;

Crumrine, M. ;

Cukierman, A. ;

Denison, E., V ;

Dierickx, M. ;

Duband, L. ;

Eiben, M. ;

Fatigoni, S. ;

Filippini, J. P. ;

Fliescher, S. ;

Goeckner-Wald, N. ;

Goldfinger, D. C. ;

Grayson, J. ;

Grimes, P. ;

Hall, G. ;

Halal, G. ;

Halpern, M. ;

Hand, E. ;

Harrison, S. ;

Henderson, S. ;

Hildebrandt, S. R. ;

Hilton, G. C. ;

Hubmayr, J. ;

Hui, H. ;

Irwin, K. D. ;

Kang, J. ;

Karkare, K. S. ;

Karpel, E. ;

Kefeli, S. ;

Kernasovskiy, S. A. ;

Kovac, J. M. ;

Kuo, C. L. ;

Lau, K. ;

Leitch, E. M. ;

Lennox, A. ;

Megerian, K. G. ;

Minutolo, L. .

PHYSICAL REVIEW LETTERS, 2021, 127 (15)

[3] Formalizing slow-roll inflation in scalar-tensor theories of gravitation [J].

Akin, Kemal ;

Arapoglu, A. Savas ;

Yukselci, A. Emrah .

PHYSICS OF THE DARK UNIVERSE, 2020, 30

[4] 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

[5] Remarks on Higgs inflation [J].

Atkins, Michael ;

Calmet, Xavier .

PHYSICS LETTERS B, 2011, 697 (01) :37-40

[6] SLOW-ROLL INFLATION IN SCALAR TENSOR THEORIES [J].

BARROW, JD .

PHYSICAL REVIEW D, 1995, 51 (06) :2729-2732

[7] Higgs boson, renormalization group, and naturalness in cosmology [J].

Barvinsky, A. O. ;

Kamenshchik, A. Yu. ;

Kiefer, C. ;

Starobinsky, A. A. ;

Steinwachs, C. F. .

EUROPEAN PHYSICAL JOURNAL C, 2012, 72 (11) :1-11

[8] Inflation scenario via the Standard Model Higgs boson and LHC [J].

Barvinsky, A. O. ;

Kamenshchik, A. Yu ;

Starobinsky, A. A. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2008, (11)

[9] QUANTUM SCALE OF INFLATION AND PARTICLE PHYSICS OF THE EARLY UNIVERSE [J].

BARVINSKY, AO ;

KAMENSHCHIK, AY .

PHYSICS LETTERS B, 1994, 332 (3-4) :270-276

[10] Higgs inflation: consistency and generalisations [J].

Bezrukov, F. ;

Magnin, A. ;

Shaposhnikov, M. ;

Sibiryakov, S. .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (01)

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