Results 41 to 50 of about 670,040 (334)
Stability of a Noncanonical Scalar Field Model during Cosmological Date
Advances in High Energy Physics, 2016 Using the noncanonical model of scalar field, the cosmological consequences of a pervasive, self-interacting, homogeneous, and rolling scalar field are studied.
Z. Ossoulian +3 more
doaj +1 more source
Dynamical Analysis of Scalar Field Cosmologies with Spatial Curvature
The Open Journal of Astrophysics, 2016 We explore the dynamical behaviour of cosmological models involving a scalar field (with an exponential potential and a canonical kinetic term) and a matter fluid with spatial curvature included in the equations of motion.
Mateja Gosenca, Peter Coles
doaj +1 more source
Reynolds-number effects and anisotropy in transverse-jet mixing [PDF]
, 2006 Experiments are described which measured concentration fields in liquid-phase strong transverse jets over the Reynolds-number range 1.0×10^3 ≤ Rej ≤ 20×10^3. Laser-induced-fluorescence measurements were made of the jet-fluid-concentration fields at a jet-
Dimotakis, Paul E., Shan, Jerry W.
core +1 more source
Fractional Scalar Field Cosmology
Fractal and FractionalConsidering the Friedmann–Lemaître–Robertson–Walker (FLRW) metric and the Einstein scalar field system as an underlying gravitational model to construct fractional cosmological models has interesting implications in both classical and quantum regimes ...
Seyed Meraj Mousavi Rasouli +2 more
doaj +1 more source
Journal of Fluid Science and Technology, 2013 Turbulent plane jets are prototypical free shear flows on which fundamental research can expand the overall understanding of turbulent flows. In this study, flow characteristics of the turbulent plane jets are studied by means of direct numerical ...
Nannan WU +5 more
doaj +1 more source
Instability of Massive Scalar Fields in Kerr-Newman Spacetime
, 2004 We investigate the instability of charged massive scalar fields in Kerr-Newman spacetime. Due to the super-radiant effect of the background geometry, the bound state of the scalar field is unstable, and its amplitude grows in time.
Furuhashi, Hironobu, Nambu, Yasusada
core +1 more source
Interacting generalized anisotropic scalar field models
European Physical Journal C: Particles and Fields, 2021 This paper is devoted to investigate the interacting generalized ghost pilgrim dark energy model in the background of anisotropic universe in general relativity.
Wajiha Javed +2 more
doaj +1 more source
Inflationary f (R) Cosmologies
Universe, 2017 This paper discusses a simple procedure to reconstruct f ( R ) -gravity models from exact cosmological solutions of the Einstein field equations with a non-interacting classical scalar field-and-radiation background.
Heba Sami +2 more
doaj +1 more source
Polar Quasinormal Modes of Neutron Stars in Massive Scalar-Tensor Theories
Frontiers in Physics, 2021 We study polar quasinormal modes of relativistic stars in scalar-tensor theories, where we include a massive gravitational scalar field and employ the standard Brans-Dicke coupling function. For the potential of the scalar field we consider a simple mass
Jose Luis Blázquez-Salcedo +4 more
doaj +1 more source
New Singular and Nonsingular Colliding Wave Solutions in Einstein - Maxwell - Scalar Theory [PDF]
, 2003 A technique is given to generate coupled scalar field solutions in colliding Einstein - Maxwell (EM) waves. By employing the Bell - Szekeres solution as seed and depending on the chosen scalar field it is possible to construct nonsingular solutions.
A. Eris +18 more
core +2 more sources