MSSM-inspired multifield inflation

Autor: S. Yu. Vernov, E. Yu. Petrova, M. V. Sumin, Ekaterina O. Pozdeeva, Mikhail Dubinin
Jazyk: angličtina
Rok vydání: 2017
Předmět:
High Energy Physics - Theory
Nuclear and High Energy Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Supersymmetric Standard Model
Physics beyond the Standard Model
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
01 natural sciences
General Relativity and Quantum Cosmology
Theoretical physics
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
010306 general physics
Inflation (cosmology)
Physics
Large Hadron Collider
010308 nuclear & particles physics
High Energy Physics::Phenomenology
Scalar (physics)
Observable
Supersymmetry
Cosmology of Theories beyond the SM
High Energy Physics - Phenomenology
High Energy Physics - Theory (hep-th)
Higgs boson
lcsh:QC770-798
Classical Theories of Gravity
Astrophysics - Cosmology and Nongalactic Astrophysics
Minimal Supersymmetric Standard Model
Zdroj: Journal of High Energy Physics, Vol 2017, Iss 12, Pp 1-27 (2017)
Journal of High Energy Physics
ISSN: 1029-8479
Popis: Despite the fact that experimentally with a high degree of statistical significance only a single Standard Model--like Higgs boson is discovered at the LHC, extended Higgs sectors with multiple scalar fields not excluded by combined fits of the data are more preferable theoretically for internally consistent realistic models of particle physics. We analyze the inflationary scenarios which could be induced by the two-Higgs doublet potential of the Minimal Supersymmetric Standard Model (MSSM) where five scalar fields have nonminimal couplings to gravity. Observables following from such MSSM-inspired multifield inflation are calculated and a number of consistent inflationary scenarios are constructed. Cosmological evolution with different initial conditions for the multifield system leads to consequences fully compatible with observational data on the spectral index and the tensor-to-scalar ratio. It is demonstrated that the strong coupling approximation is precise enough to describe such inflationary scenarios.
27 pages, 4 figures, 5 tables. Version to appear in JHEP. Additions made to the text of the Introduction dealing with the issues of conformity of this multifield model and models of N=1 supergravity (pages 2-3). Added new inflationary scenarios, which are an artifact of such analysis (pages 11-12, Tables 1-4). Additional comments on page 9 and page 13. New references added
Databáze: OpenAIRE
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