Results 61 to 70 of about 1,145,029 (201)
Spin-induced scalarization of Kerr black holes with a massive scalar field [PDF]
, 2020 In the present paper we study the onset of the spin-induced scalarization of a Kerr black hole in scalar-Gauss-Bonnet gravity with a massive scalar field. Our approach is based on a (2+1) time evolution of the relevant linearized scalar field perturbation equation.
arxiv +1 more source
Brane World Inflation with Scalar and Tachyon Fields [PDF]
arXiv, 2007 We present inflationary models of the early universe in the braneworld scenario considering both scalar field and tachyon field separately. The technique of Chervon and Zhuravlev to obtain inflationary cosmological models without restrictions on a scalar field potential is employed here.
arxiv
A note on perfect scalar fields
, 2010 We derive a condition on the Lagrangian density describing a generic, single, non-canonical scalar field, by demanding that the intrinsic, non-adiabatic pressure perturbation associated with the scalar field vanishes identically.
D. H. Lyth +7 more
core +1 more source
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.
Abbas Kenan Ciftci +3 more
openaire +4 more sources
Torsion, Dirac Field, Dark Matter and Dark Radiation
, 2006 The role of torsion and a scalar field $\phi$ in gravitation, especially, in the presence of a Dirac field in the background of a particular class of the Riemann-Cartan geometry is considered here. Recently, a Lagrangian density with Lagrange multipliers
Bandyopadhyay P. +8 more
core +3 more sources
Renormalization of the charged scalar field in curved space
, 1995 The DeWitt-Schwinger proper time point-splitting procedure is applied to a massive complex scalar field with arbitrary curvature coupling interacting with a classical electromagnetic field in a general curved spacetime.
A. O. Barvinsky +32 more
core +2 more sources
Symmetry inheritance of scalar fields [PDF]
Classical and Quantum Gravity, 2015 Matter fields don't necessarily have to share the symmetries with the spacetime they live in. When this happens, we speak of the symmetry inheritance of fields. In this paper we classify the obstructions of symmetry inheritance by the scalar fields, both real and complex, and look more closely at the special cases of stationary and axially symmetric ...
openaire +4 more sources
Turbulent Mixing in Transverse Jets [PDF]
, 2001 Turbulent mixing is studied in liquid-phase transverse jets. Jet-fluid concentration fields were measured using laser-induced fluorescence and digital-imaging techniques, for jets in the Reynolds number range 1000
Dimotakis, Paul, Shan, Jerry
core
Static Black Hole dressed with a massive Scalar field [PDF]
arXiv, 2008 A four-dimensional static black hole solution of Einstein equation conformally coupled to a massive and self interacting scalar field is obtained. A nontrivial scalar solution proposes a weak scalar hair. A dressed black hole shows a trace of scalar charge in the metric signalling the presence of scalar hair.
arxiv
Toy models for gravitational and scalar QED decoherence
, 2020 We investigate the dynamics of two quantum mechanical oscillator system-bath toy models obtained by dimensionally truncating linearized gravity coupled to a massive scalar field and scalar QED.
Blencowe, M. P., Xu, Qidong
core