Results 21 to 30 of about 32,779 (246)
Catch-me-if-you-can: the overshoot problem and the weak/inflation hierarchy
Journal of High Energy Physics, 2022 We study the overshoot problem in the context of post-inflationary string cosmology (in particular LVS). LVS cosmology features a long kination epoch as the volume modulus rolls down the exponential slope towards the final minimum, with an energy density
Joseph P. Conlon, Filippo Revello
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Quantum entanglement in inflationary cosmology
European Physical Journal C: Particles and Fields, 2020 We investigate the time-dependent entanglement entropy in the AdS space with a dS boundary which represents an expanding spacetime. On this time-dependent spacetime, we show that the Ryu–Takayanagi formula, which is usually valid in the static spacetime,
Seoktae Koh +3 more
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European Physical Journal C: Particles and Fields, 2021 We study cosmological inflation and its dynamics in the framework of the Randall–Sundrum II brane model. In particular, we analyze in detail four representative small-field inflationary potentials, namely Natural inflation, Hilltop inflation, Higgs-like ...
Constanza Osses +2 more
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Phenomenological Inflationary Model in Supersymmetric Quantum Cosmology
Universe, 2022 We consider the effective evolution of a phenomenological model from FLRW supersymmetric quantum cosmology with a scalar field. The scalar field acts as a clock and inflaton.
Nephtalí E. Martínez-Pérez +2 more
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Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results
Universe, 2020 Power spectra play an important role in the theory of inflation, and their ability to reproduce current observational data to high accuracy is often considered a triumph of inflation, largely because of a lack of credible alternatives.
Herbert W. Hamber +2 more
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Von Neumann algebra description of inflationary cosmology
European Physical Journal C: Particles and Fields, 2023 We study the von Neumann algebra description of the inflationary quasi-de Sitter (dS) space. Unlike perfect dS space, quasi-dS space allows the nonzero energy flux across the horizon, which can be identified with the expectation value of the static time ...
Min-Seok Seo
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Holographic cosmology solutions of problems with pre-inflationary cosmology
Journal of High Energy Physics, 2020 In this paper we describe in detail how to solve the problems of pre-inflationary cosmology within the holographic cosmology model of McFadden and Skenderis [1].
Horatiu Nastase
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How Generic Is Eternal Inflation?
Sci, 2022 Everlasting inflation has far-reaching implications for cosmology and the standing of self-localizing inferences made by observers, which have been subjects of renewed interest in light of the growing acceptance of theory landscapes and the attendant ...
Ross Greenwood, Anthony Aguirre
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European Physical Journal C: Particles and Fields, 2021 We propose an extension of the scalaron-Higgs model by a non-minimal coupling of the Standard Model Higgs boson to the quadratic Ricci scalar resulting in a Higgs-dependent scalaron mass.
Anirudh Gundhi, Christian F. Steinwachs
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Gravitational Fluctuations as an Alternative to Inflation
Universe, 2019 The ability to reproduce the observed matter power spectrum P ( k ) to high accuracy is often considered as a triumph of inflation. In this work, we explore an alternative explanation for the power spectrum based on nonperturbative quantum field ...
Herbert W. Hamber
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