Results 41 to 50 of about 663,607 (334)
Horizon curvature and spacetime structure influences on black hole scalarization
European Physical Journal C: Particles and Fields, 2021 Black hole spontaneous scalarization has been attracting more and more attention as it circumvents the well-known no-hair theorems. In this work, we study the scalarization in Einstein–scalar-Gauss–Bonnet theory with a probe scalar field in a black hole ...
Hong Guo +3 more
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A classification of scalar field potentials with cosmological scaling solutions [PDF]
, 1998 An attractive method of obtaining an effective cosmological constant at the present epoch is through the potential energy of a scalar field. Considering models with a perfect fluid and a scalar field, we classify all potentials for which the scalar field
Liddle, Andrew R, Scherrer, Robert J
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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
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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
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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
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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
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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
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Collapse of an axion scalar field
European Physical Journal C: Particles and Fields, 2021 The manuscript deals with an interacting scalar field that mimics the evolution of the so-called axion scalar dark matter or axion like particles with ultra-light masses.
Soumya Chakrabarti
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Spontaneous scalarization with massive fields
Physical Review D, 2016 We study the effect of a mass term in the spontaneous scalarization of neutron stars, for a wide range of scalar field parameters and neutron star equations of state. Even though massless scalars have been the focus of interest in spontaneous scalarization so far, recent observations of binary systems rule out most of their interesting parameter space.
Fethi M. Ramazanoğlu +2 more
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Revisiting the Carrollian scalar field
Physical Review D, 2022 We investigate the (conformally coupled) scalar field on a general Carrollian spacetime in arbitrary dimension. The analysis discloses electric and magnetic dynamics. For both, we provide the energy and the momenta of the field, accompanied by their conservation equations.
David Rivera-Betancour, Matthieu Vilatte
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