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
Direct limits for scalar field dark matter from a gravitational-wave detector. [PDF]
Nature, 2021 The nature of dark matter remains unknown to date, although several candidate particles are being considered in a dynamically changing research landscape1.
Vermeulen SM +22 more
europepmc +3 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
Scalar Field Comparison with Topological Descriptors: Properties and Applications for Scientific Visualization [PDF]
Computer graphics forum (Print), 2021 In topological data analysis and visualization, topological descriptors such as persistence diagrams, merge trees, contour trees, Reeb graphs, and Morse–Smale complexes play an essential role in capturing the shape of scalar field data.
Lin Yan +6 more
semanticscholar +1 more source
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 +1 more source
Gravity with a generalized conformal scalar field: Theory and solutions [PDF]
Physical Review D, 2021 We naturally extend the theory of gravity with a conformally coupled scalar field by only requiring conformal invariance of the scalar field equation of motion and not of the action.
Pedro G. S. Fernandes
semanticscholar +1 more source
Hyperbolic inflationary model with nonzero curvature
Physics Letters B, 2022 We consider a cosmological model consisting of two scalar fields defined in the hyperbolic plane known as hyperbolic inflation. For the background space, we consider a homogeneous and isotropic spacetime with nonzero curvature.
Andronikos Paliathanasis, Genly Leon
doaj +1 more source
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
Gauss–Bonnet term corrections in scalar field cosmology [PDF]
The European Physical Journal C, 2020 The influence of non-minimal coupling of a scalar field and the Gauss–Bonnet term on the inflationary stage of evolution of the universe is investigated in this paper. The main cosmological effects of such a coupling were considered.
I. Fomin
semanticscholar +1 more source
Generic Three-Parameter Wormhole Solution in Einstein-Scalar Field Theory
Particles, 2021 An exact analytical, spherically symmetric, three-parametric wormhole solution has been found in the Einstein-scalar field theory, which covers the several well-known wormhole solutions.
Bobur Turimov +3 more
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