Results 21 to 30 of about 359,649 (249)
Cosmological parameters in noncommutative inflation [PDF]
Physics Letters B, 2004 We investigate how the uncertainty of noncommutative spacetime could explain the WMAP data. For this purpose, the spectrum is divided into the IR and UV region. We introduce a noncommutative parameter of $ _0$ in the IR region and a noncommutative parameter of $ _0$ in the UV region.
Yun Soo Myung
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Triple unification of inflation, dark energy, and dark matter in two-scalar-field cosmology [PDF]
Physical Review D, 2020 A unified description of inflation, dark energy, and dark matter is presented within a two-scalar-field cosmological model. Inflation, assumed to be of the warm type, is driven by one of the scalar fields, which, shortly after the end of the inflationary
P. M. S'a
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Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey [PDF]
Progress of Theoretical and Experimental Physics, 2022 LiteBIRD the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics.
LiteBIRD Collaboration E. Allys +185 more
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Phenomenology and cosmology of no-scale attractor models of inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We have recently proposed attractor models for modulus fixing, inflation, supersymmetry breaking and dark energy based on no-scale supergravity. In this paper we develop phenomenological and cosmological aspects of these no-scale attractor models that ...
J. Ellis +3 more
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Cosmology, inflation, and the physics of nothing [PDF]
, 2003 These four lectures cover four topics in modern cosmology: the cosmological constant, the cosmic microwave background, inflation, and cosmology as a probe of physics at the Planck scale. The underlying theme is that cosmology gives us a unique window on the ``physics of nothing,'' or the quantum-mechanical properties of the vacuum.
William H. Kinney
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Inflation and cosmological constant [PDF]
Physica Scripta, 2021 Abstract In construction of an inflationary model, one usually assumes that the matter sector of the gravitational action is minimally coupled to the background. It means that the matter (inflaton) part of the action is coupled with the same metric of the gravitational part.
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Cosmology without inflation [PDF]
Physical Review D, 2008 We propose a new cosmological paradigm in which our observed expanding phase is originated from an initially large contracting Universe that subsequently experienced a bounce. This category of models, being geodesically complete, is non-singular and horizon-free, and can be made to prevent any relevant scale to ever have been smaller than the Planck ...
Peter, Patrick, Pinto-Neto, Nelson
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String cosmology and inflation [PDF]
Physical Review D, 1995 Following a suggestion by Gasperini and Veneziano, that String Cosmology can be reconciled with Inflation and, hence, with the Standard Big Bang, we display an analytical solution which possesses four interesting properties: (1) it is non-singular; (2) it distinguishes the dynamics of the external scale factor, $a(t)$, from that of the internal one, $b(
ANGELANTONJ, Carlo +3 more
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Bounce inflation cosmology with Standard Model Higgs boson [PDF]
, 2015 It is of great interest to connect cosmology in the early universe to the Standard Model of particle physics. In this paper, we try to construct a bounce inflation model with the standard model Higgs boson, where the one loop correction is taken into ...
Y. Wan +5 more
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Minimal decoherence from inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 We compute the rate with which super-Hubble cosmological fluctuations are decohered during inflation, by their gravitational interactions with unobserved shorter-wavelength scalar and tensor modes. We do so using Open Effective Field Theory methods, that
C. Burgess +4 more
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