Results 1 to 10 of about 663,607 (334)
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 +4 more sources
Scalar field inhomogeneous cosmologies [PDF]
Journal of Mathematical Physics, 1995 Some exact solutions for the Einstein field equations corresponding to inhomogeneous G2 cosmologies with an exponential-potential scalar field, which generalize solutions obtained previously, are considered. Several particular cases are studied and the properties related to generalized inflation and asymptotic behavior of the models are discussed.
A. Feinstein, J. Ibáñez, P. Labraga
core +6 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
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. This was done through the implementation of canonical transformations at the classical level, and unitary transformations at the quantum level, without ever ...
F. T. Falciano, Nelson Pinto-Neto
openaire +4 more sources
Rotating scalar field wormhole [PDF]
Classical and Quantum Gravity, 2006 Sign of the exponential in equation (10) has been changed.
Darío Núñez, Tonatiuh Matos
openaire +4 more sources
Massless and massive scalar shell dynamics from rotating BTZ black holes with nonminimally coupled scalar fields [PDF]
Scientific ReportsThis paper is devoted to presenting the dynamics of thin-shell composed of massive and massless scalar fields developed from (2+1)-dimensional rotating black holes with nonminimally coupled scalar fields.
Faisal Javed +6 more
doaj +2 more sources
On concircular scalar fields [PDF]
Proceedings of the Japan Academy, 1965 Yoshihiro Tashiro
+8 more sources
Scalar field as a null dust [PDF]
European Physical Journal C: Particles and Fields, 2019 We show that a canonical, minimally coupled scalar field which is non-self interacting and massless is equivalent to a null dust fluid (whether it is a test or a gravitating field), in a spacetime region in which its gradient is null.
Valerio Faraoni, Jeremy Côté
doaj +4 more sources
Colored scalar in a chromomagnetic field
Open Physics, 2010 Abstract The motion of colored scalar particles in a constant color magnetic field is considered. The Klein-Gordon equation is solved in this background and the energy spectrum is quantized by boundary conditions. The unitary transformation diagonalizing this equation and the states with definite energy are found.
Turkoz Shemsettin +2 more
doaj +4 more sources
Dynamics in Interacting Scalar-Torsion Cosmology
Universe, 2021 In a spatially flat Friedmann–Lemaître–Robertson–Walker background space, we consider a scalar-torsion gravitational model which has similar properties to the dilaton theory. This teleparallel model is invariant under a discrete transformation similar to
Andronikos Paliathanasis
doaj +1 more source