Results 11 to 20 of about 9,449,404 (314)
Duality family of scalar field
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
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Analytic description of primordial black hole formation from scalar field fragmentation [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 Primordial black hole (PBH) formation is a more generic phenomenon than was once thought. The dynamics of a scalar field in inflationary universe can produce PBHs under mild assumptions regarding the scalar potential.
Eric Cotner +3 more
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Painlevé Analysis of the Cosmological Field Equations in Weyl Integrable Spacetime
Universe, 2022 We apply a singularity analysis to investigate the integrability properties of the gravitational field equations in Weyl Integrable Spacetime for a spatially flat Friedmann–Lemaître–Robertson–Walker background spacetime induced by an ideal gas.
Andronikos Paliathanasis
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AdS/BCFT with brane-localized scalar field
Journal of High Energy Physics, 2023 In this paper, we study the dynamics of end-of-the-world (EOW) branes in AdS with scalar fields localized on the branes as a new class of gravity duals of CFTs on manifolds with boundaries.
Hiroki Kanda +4 more
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Nonradial normalized solutions for nonlinear scalar field equations [PDF]
Nonlinearity, 2018 We study the following nonlinear scalar field equation Here , m > 0 is a given constant and arises as a Lagrange multiplier. In a mass subcritical case but under general assumptions on the nonlinearity f , we show the existence of one nonradial ...
L. Jeanjean, Sheng-Sen Lu
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Analytical investigations on non-minimally coupled scalar fields outside neutral reflecting shells
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
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Dark Matter from Scalar Field Fluctuations. [PDF]
Physical Review Letters, 2019 Dark matter (DM) may have its origin in a pre-big-bang epoch, the cosmic inflation. Here, we consider for the first time a broad class of scenarios where a massive free scalar field unavoidably reaches an equilibrium between its classical and quantum ...
Tommi Tenkanen
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Vacuum Radiation from Massive Scalar Field
Universe, 2022 The vacuum radiation of a massive scalar field is studied by means of a single moving mirror. The field equation with an arbitrary-shaped mirror moving in (d+1) dimensions is given perturbatively in the non-relativistic limit.
Yu-Song Cao
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Scalar field effects on the orbit of S2 star [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Precise measurements of the S-stars orbiting SgrA* have set strong constraints on the nature of the compact object at the centre of the Milky Way. The presence of a black hole in that region is well established, but its neighbouring environment is ...
A. Amorim +40 more
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Gauss-Bonnet black holes with a massive scalar field [PDF]
Physical Review D, 2019 In the present paper we consider the extended scalar-tensor-Gauss-Bonnet gravity with a massive scalar field. We prove numerically the existence of Gauss-Bonnet black holes for three different forms of the coupling function including the case of ...
D. Doneva +2 more
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