Results 51 to 60 of about 9,742,280 (331)
Scalar field in cosmology: Potential for isotropization and inflation
, 2010 The important role of scalar field in cosmology was noticed by a number of authors. Due to the fact that the scalar field possesses zero spin, it was basically considered in isotropic cosmological models. If considered in an anisotropic model, the linear
A. Einstein +41 more
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Stability of black holes in Einstein-charged scalar field theory in a cavity [PDF]
, 2015 Can a black hole that suffers a superradiant instability evolve towards a “hairy” configuration which is stable? We address this question in the context of Einstein-charged scalar field theory.
S. Dolan +2 more
semanticscholar +1 more source
BQP-completeness of scattering in scalar quantum field theory [PDF]
Quantum, 2017 Recent work has shown that quantum computers can compute scattering probabilities in massive quantum field theories, with a run time that is polynomial in the number of particles, their energy, and the desired precision.
S. Jordan +3 more
semanticscholar +1 more source
Fractional Scalar Field Cosmology
Fractal and FractionalConsidering the Friedmann–Lemaître–Robertson–Walker (FLRW) metric and the Einstein scalar field system as an underlying gravitational model to construct fractional cosmological models has interesting implications in both classical and quantum regimes ...
Seyed Meraj Mousavi Rasouli +2 more
doaj +1 more source
Inflationary f (R) Cosmologies
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.
Heba Sami +2 more
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Rotating Scalar Field Wormhole
, 2006 We derive an exact solution to the Einstein's equations with a stress-energy tensor corresponding to an opposite-sign scalar field, and show that such a solution describes the internal region of a rotating wormhole.
Matos, Tonatiuh, Nunez, Dario
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Dynamical analysis in scalar field cosmology [PDF]
, 2015 We give a general method to find exact cosmological solutions for scalar-field dark energy in the presence of perfect fluids. We use the existence of invariant transformations for the Wheeler De Witt (WdW) equation.
A. Paliathanasis +3 more
semanticscholar +1 more source
Scalar Field Theories with Polynomial Shift Symmetries [PDF]
Communications in Mathematical Physics, 2014 We continue our study of naturalness in nonrelativistic QFTs of the Lifshitz type, focusing on scalar fields that can play the role of Nambu–Goldstone (NG) modes associated with spontaneous symmetry breaking.
Tom Griffin +3 more
semanticscholar +1 more source
Effects of chronic browsing on life‐history traits of an irruptive large herbivore population
Population Ecology, EarlyView.This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji +9 more
wiley +1 more source
Properties of scalar perturbations generated by conformal scalar field
, 2010 Primordial scalar perturbations may be generated when complex conformal scalar field rolls down its negative quartic potential. We begin with the discussion of peculiar infrared properties of this scenario.
Libanov, M., Mironov, S., Rubakov, V.
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