Results 21 to 30 of about 6,704,491 (163)
Dynamical systems applied to cosmology: Dark energy and modified gravity [PDF]
Physics reports, 2017 The Nobel Prize winning confirmation in 1998 of the accelerated expansion of our Universe put into sharp focus the need of a consistent theoretical model to explain the origin of this acceleration.
S. Bahamonde +5 more
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Quantum Cosmology from Group Field Theory Condensates: a Review [PDF]
, 2016 We give, in some detail, a critical overview over recent work towards deriving a cosmological phenomenology from the fundamental quantum dynamics of group field the- ory (GFT), based on the picture of a macroscopic universe as a \condensate" of a large ...
Steffen Gielen, Lorenzo Sindoni
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SSRN Electronic Journal, 2023 In cosmological special relativity theory, we study Maxwell equations, electromagnetic wave equations and functions. In the cosmological special theory of relativity, we study energy?momentum relations, the Klein-Gordon equation and wave functions. If we solve the Klein?Gordon equation, we obtain the Yukawa potential in the cosmological inertial frame.
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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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Theory of cosmological perturbations with cuscuton [PDF]
Journal of Cosmology and Astroparticle Physics, 2017 This paper presents the first derivation of the quadratic action for curvature perturbations, $ζ$, within the framework of cuscuton gravity. We study the scalar cosmological perturbations sourced by a canonical single scalar field in the presence of cuscuton field.
Boruah, Supranta S. +2 more
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, 2015 Axions comprise a broad class of particles that can play a major role in explaining the unknown aspects of cosmology. They are also well-motivated within high energy physics, appearing in theories related to CP -violation in the standard model ...
D. Marsh
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f(T) teleparallel gravity and cosmology [PDF]
Reports on progress in physics. Physical Society, 2015 Over recent decades, the role of torsion in gravity has been extensively investigated along the main direction of bringing gravity closer to its gauge formulation and incorporating spin in a geometric description.
Yi-Fu Cai +3 more
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Cosmological Relativity: A New Theory of Cosmology
, 2000 A general-relativistic theory of cosmology, the dynamical variables of which are those of Hubble's, namely distances and redshifts, is presented. The theory describes the universe as having a three-phase evolution with a decelerating expansion followed by a constant and an accelerating expansion, and it predicts that the universe is now in the latter ...
Behar, Silvia, Carmeli, Moshe
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Axions: Theory and Cosmological Role [PDF]
Annual Review of Nuclear and Particle Science, 2013 We review recent developments in axion cosmology. Topics include axion cold dark matter, axions from topological defects, axion isocurvature perturbation and its non-Gaussianity, and axino/saxion cosmology in a supersymmetric axion model.
Kawasaki, Masahiro, Nakayama, Kazunori
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Quasidilaton: Theory and cosmology
Physical Review D, 2013 General Relativity (GR), with or without matter fields, admits a natural extension to a scale invariant theory that requires a dilaton. Here we show that the recently formulated massive GR, minimally coupled to matter, possesses a new global symmetry related to scaling of the reference coordinates w.r.t. the physical ones.
D'Amico, Guido +3 more
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