Results 121 to 130 of about 49,682 (257)

An open system approach to gravity

open access: yesJournal of High Energy Physics
Several major open problems in cosmology — including the nature of inflation, dark matter, and dark energy — share a common structure: they involve spacetime-filling media with unknown microphysics, and can be probed so far only through their ...
Santiago Agüí Salcedo   +3 more
doaj   +1 more source

Primordial Gravitational Waves and Reheating in a New Class of Plateau-Like Inflationary Potentials

open access: yesUniverse, 2018
We study a new class of inflation model parametrized by the Hubble radius, such that aH∝exp(−αφ)n. These potentials are plateau-like, and reduce to the power-law potentials in the simplest case n=2.
Siri Chongchitnan
doaj   +1 more source

Inflation and axion cosmology

open access: yesPhysics Letters B, 1988
Abstract It is argued that the standard constraint ƒ⪷10 12 GeV in the axion theory and related constraints in the theories of other weakly interacting scalar fields do not apply in many versions of the inflationary universe scenario.
openaire   +1 more source

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