Results 11 to 20 of about 180,985 (262)
Particle Physics and Inflationary Cosmology [PDF]
Physics Today, 1987 With the invention of unified theories of strong, weak, electromagnetic and gravitational interactions, elementaryparticle physics has entered a very interesting and unusual stage of its development.
Andrei Linde
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Consistent inflationary cosmology from quadratic gravity with dynamical torsion [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 The idea of gauge theories of gravity predicts that there should exist not only the massless graviton but also massive particles carrying the gravitational force.
K. Aoki, S. Mukohyama
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Analytical investigation of pre-inflationary effects in the primordial power spectrum: from General Relativity to hybrid Loop Quantum Cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 This work is an analytical study of the main differences between classical inflationary effects of a fast-roll regime and imprints of hybrid Loop Quantum Cosmology (LQC) on the primordial power spectrum.
Beatriz Elizaga Navascués +1 more
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Inflationary f(R) cosmologies [PDF]
Universe, 2017 This paper discusses a simple procedure to reconstruct f ( R ) -gravity models from exact cosmological solutions of the Einstein field equations with a non-interacting classical scalar field-and-radiation background. From the type of inflationary scenario we are interested in, we show how the potential functions can be obtained. We then show how
Heba Sami +2 more
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Predictions of quantum gravity in inflationary cosmology: effects of the Weyl-squared term [PDF]
, 2020 We derive the predictions of quantum gravity with fakeons on the amplitudes and spectral indices of the scalar and tensor fluctuations in inflationary cosmology. The action is R + R 2 plus the Weyl-squared term. The ghost is eliminated by turning it into
D. Anselmi, Eugenio Bianchi, Marco Piva
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Trans-Planckian censorship and inflationary cosmology [PDF]
Physical Review D, 2019 We study the implications of the recently proposed Trans-Planckian Censorship Conjecture (TCC) for early universe cosmology and in particular inflationary cosmology.
Alek Bedroya +3 more
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Universe, 2023 Quantum cosmology aims to develop a quantum theory of the universe, attempting to answer open questions of physical cosmology, mainly related to the early epochs of the universe. Such a theory aims to unite relativity theory and quantum theory. Here, the
Shreya Banerjee
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Strengthening the TCC bound on inflationary cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 We show that the constraints which follow from the Trans-Planckian Censorship Conjecture for inflationary cosmology can be strengthened if the pre-inflationary period the universe was dominated by radiation.
R. Brandenberger, E. Wilson-Ewing
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STABLE INFLATIONARY DISSIPATIVE COSMOLOGIES [PDF]
International Journal of Modern Physics D, 2000 The stability of the de Sitter era of cosmic expansion in spatially curved homogeneous isotropic universes is studied. The source of the gravitational field is an imperfect fluid such that the parameters that characterize it may change with time. In this way we extend our previous analysis for spatially-flat spaces as well as the work of Barrow.
Chimento, Luis Pascual +2 more
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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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