Results 1 to 10 of about 10,022,702 (373)
Static and slowly rotating neutron stars in scalar–tensor theory with self-interacting massive scalar field [PDF]
European Physical Journal C: Particles and Fields, 2018 Binary pulsar observations and gravitational wave detections seriously constrained scalar–tensor theories with massless scalar field allowing only small deviations from general relativity.
Kalin V. Staykov +3 more
doaj +6 more sources
Differences between scalar field and scalar density solutions [PDF]
Canadian Journal of Physics, 2007 We explore differences between scalar field, and scalar density solutions by using Robertson-Walker (RW) metric, and also a non-relativistic Hamiltonian is derived for a scalar density field in the post-Newtonian approximation. The results are compared with those of scalar field. The expanding universe in RW metric, and post-Newtonian solution of Klein-
Pirinççioglu, Nurettin, Sert, Ilker
arxiv +7 more sources
Direct limits for scalar field dark matter from a gravitational-wave detector [PDF]
Nature, 2021 S M Vermeulen, H Grote, V Raymond
exaly +4 more sources
Scalar Field Inhomogeneous Cosmologies [PDF]
Journal of Mathematical Physics, 1995 Some exact solutions for the Einstein field equations corresponding to inhomogeneous $G_2$ cosmologies with an exponential-potential scalar field which generalize solutions obtained previously are considered.
Feinstein, A., Ibáñez, J., Labraga, P.
core +6 more sources
Revisiting the Carrollian scalar field [PDF]
Physical Review D, 2022 We inv estigate the (conformally coupled) scalar field on a general Carrollian spacetime in arbitrary dimension. The analysis discloses electric and magnetic dynamics.
David Rivera-Betancour, Matthieu Vilatte
semanticscholar +5 more sources
Analytical investigations on non-minimally coupled scalar fields outside neutral reflecting shells [PDF]
European Physical Journal C: Particles and Fields, 2023 We study the existence of scalar fields outside neutral reflecting shells. We consider static massive scalar fields non-minimally coupled to the Gauss–Bonnet invariant.
Yan Peng
doaj +2 more sources
Scalar Perturbations in Scalar Field Quantum Cosmology [PDF]
Physical Review D, 2009 In this paper it is shown how to obtain the simplest equations for the Mukhanov-Sasaki variables describing quantum linear scalar perturbations in the case of scalar fields without potential term.
B. Hatfield +4 more
core +3 more sources
Duality family of scalar field [PDF]
Nuclear Physics B, 2021 We show that there exists a duality family of self-interacting massive scalar fields. The scalar fields in a duality family are related by a duality transformation.
Wen-Du Li, Wu-Sheng Dai
doaj +3 more sources
European Physical Journal C: Particles and Fields, 2018 With a suitable decomposition of its energy-momentum tensor into pressureless matter and a vacuum type term, we investigate the spherical gravitational collapse of a minimally coupled, self-interacting scalar field, showing that it collapses to a ...
S. Carneiro, J. C. Fabris
doaj +3 more sources
Renormalization for a Scalar Field in an External Scalar Potential [PDF]
Symmetry, 2018 The Pauli–Villars regularization procedure confirms and sharpens the conclusions reached previously by covariant point splitting. The divergences in the stress tensor of a quantized scalar field interacting with a static scalar potential are isolated ...
Stephen A. Fulling +2 more
doaj +3 more sources