Results 21 to 30 of about 320,327 (338)
Gravity’s Rainbow and compact stars [PDF]
The Fourteenth Marcel Grossmann Meeting, 2017 A number of recent studies has focused on the implications of new physics at the Planck scale on the equilibrium of compact astrophysical objects such as white dwarf and neutron stars. Here we analyze the modification of the equilibrium configurations induced by the so-called Gravity's Rainbow that account for Planck scale deformation of the space-time.
Garattini, Remo, Mandanici, Gianluca
openaire +3 more sources
On instabilities of scalar hairy regular compact reflecting stars
Journal of High Energy Physics, 2018 We study the system constructed by charged scalar fields linearly coupled to asymptotically flat horizonless compact reflecting stars. We obtain bounds on the charge of the scalar field, below which the scalar hairy star is expected to suffer from ...
Yan Peng
doaj +1 more source
Colour superconductivity in compact stars [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2001 19 pages. 2 figures. To appear in the proceedings of the ECT Workshop on Neutron Star Interiors, Trento, Italy, June 2000. Shorter versions contributed to the proceedings of Strong and Electroweak Matter 2000, Marseille, France, June 2000 and to the proceedings of Strangeness 2000, Berkeley, CA, July 2000.
Alford, Mark +2 more
openaire +2 more sources
Quantum design in the study of pycnonuclear reactions in compact stars and new quasibound states [PDF]
Ядерна фізика та енергетика, 2023 Quantum effects in pycnonuclear reactions in compact stars at zero temperatures are studied with high precision. The reaction 16O + 16O was analyzed using the method of multiple internal reflections.
K. A. Shaulskyi, S. P. Maydanyuk
doaj +1 more source
Scalar field configurations supported by charged compact reflecting stars in a curved spacetime
Physics Letters B, 2018 We study the system of static scalar fields coupled to charged compact reflecting stars through both analytical and numerical methods. We enclose the star in a box and our solutions are related to cases without box boundaries when putting the box far ...
Yan Peng
doaj +1 more source
Heavy baryons in compact stars
Progress in Particle and Nuclear Physics, 2023 v3 and v2: 79 pages, 26 figures, final version (minor changes and additions, typos corrected). v1: 76 pages, 26 figures.
Armen Sedrakian +2 more
openaire +6 more sources
Remarks on the star product of functions on finite and compact groups [PDF]
, 2009 Using the formalism of quantizers and dequantizers, we show that the characters of irreducible unitary representations of finite and compact groups provide kernels for star products of complex-valued functions of the group elements.
Aniello, P. +3 more
core +3 more sources
Upper bound on the radii of regular ultra-compact star photonspheres
Physics Letters B, 2019 We investigate the photonsphere in the background of regular asymptotically flat compact stars. The analysis includes the general hairy compact star considering the matter fields' backreaction on the metric in various gravity theories.
Yan Peng
doaj +1 more source
Brazilian Journal of Physics, 2007 We investigate the possibility that charged compact objects could be the accelerators of high energy cosmic rays. In order to do so, we choose to first solve numerically a system of differential equations describing the structure of charged compact objects, including the generalization of the Tolman-Oppenheimer-Volkoff equation for this class of ...
Siffert, Beatriz B. +2 more
openaire +3 more sources
European Physical Journal C: Particles and Fields, 2023 It has been suggested that the Einstein–Gauss–Bonnet theory coupled with a scalar field (EGBS) may allow us to obtain physically viable models of celestial phenomena such that the scalar field effect is active in standard four dimensions. We consider the
G. G. L. Nashed, Shin’ichi Nojiri
doaj +1 more source