Results 41 to 50 of about 298,499 (308)
Wormholes and Naked Singularities in Brans-Dicke cosmology [PDF]
, 2015 We perform analytical and numerical study of static spherically symmetric solutions in the context of Brans-Dicke-like cosmological model by Elizalde et al. with an exponential potential.
Alexeyev, S. O. +2 more
core +1 more source
, 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
semanticscholar +1 more source
Bianchi identities in f(T) gravity: Paving the way to confrontation with astrophysics
Physics Letters B, 2020 Theories of f(T) gravity are being actively confronted with cosmological observations, and are being studied for their potential to solve famous problems of cosmology. A necessary step is to extend these studies to astrophysical settings.
Alexey Golovnev, María-José Guzmán
doaj +1 more source
Strangeness in astrophysics and cosmology [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2010 Some recent developments concerning the role of strange quark matter for astrophysical systems and the QCD phase transition in the early universe are addressed. Causality constraints of the soft nuclear equation of state as extracted from subthreshold kaon production in heavy-ion collisions are used to derive an upper mass limit for compact stars.
T. Boeckel +5 more
openaire +3 more sources
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
semanticscholar +1 more source
Astrophysical Configurations with Background Cosmology: Probing Dark Energy at Astrophysical Scales
, 2007 We explore the effects of a positive cosmological constant on astrophysical and cosmological configurations described by a polytropic equation of state.
A. Balaguera-Antolinez +4 more
core +3 more sources
Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy [PDF]
, 2006 Cosmological consequences of a string-motivated dark energy scenario featuring a scalar field coupled to the Gauss-Bonnet invariant are investigated. We study the evolution of the universe in such a model, identifying its key properties. The evolution of
Amendola +32 more
core +3 more sources
COLOSSUS: A Python Toolkit for Cosmology, Large-scale Structure, and Dark Matter Halos [PDF]
Astrophysical Journal Supplement Series, 2017 This paper introduces Colossus, a public, open-source python package for calculations related to cosmology, the large-scale structure (LSS) of matter in the universe, and the properties of dark matter halos.
B. Diemer
semanticscholar +1 more source
Brans–Dicke cosmology with a Λ-term: a possible solution to ΛCDM tensions [PDF]
Classical and quantum gravity, 2020 We present a full-fledged analysis of Brans–Dicke cosmology with a cosmological constant and cold dark matter (BD-ΛCDM for short). We extend the scenarios where the current cosmological value of the BD-field is restricted by the local astrophysical ...
J. Peracaula +3 more
semanticscholar +1 more source
Astro-quark matter: a challenge facing astroparticle physics
, 2008 Quark matter both in terrestrial experiment and in astrophysics is briefly reviewed. Astrophysical quark matter could appear in the early Universe, in compact stars, and as cosmic rays. Emphasis is put on quark star as the nature of pulsars.
Xu, Renxin
core +1 more source