Boson stars in general scalar-tensor gravitation: equilibrium configurations

We study equilibrium configurations of boson stars in the framework of general scalar-tensor theories of gravitation. We analyze several possible couplings, with acceptable weak field limits and, when known, nucleosynthesis bounds, in order to work in the cosmologically more realistic cases of these...

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Detalles Bibliográficos
Autor principal:	Torres, Diego F.
Formato:	Articulo Preprint
Lenguaje:	Inglés
Publicado:	1997
Materias:	Física Particle physics Scalar theories of gravitation Physics Gravitation Scalar boson Stars Parameterized post-Newtonian formalism Scalar (physics) Boson Gravitational constant
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/123168
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-123168
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Particle physics Scalar theories of gravitation Physics Gravitation Scalar boson Stars Parameterized post-Newtonian formalism Scalar (physics) Boson Gravitational constant
spellingShingle	Física Particle physics Scalar theories of gravitation Physics Gravitation Scalar boson Stars Parameterized post-Newtonian formalism Scalar (physics) Boson Gravitational constant Torres, Diego F. Boson stars in general scalar-tensor gravitation: equilibrium configurations
topic_facet	Física Particle physics Scalar theories of gravitation Physics Gravitation Scalar boson Stars Parameterized post-Newtonian formalism Scalar (physics) Boson Gravitational constant
description	We study equilibrium configurations of boson stars in the framework of general scalar-tensor theories of gravitation. We analyze several possible couplings, with acceptable weak field limits and, when known, nucleosynthesis bounds, in order to work in the cosmologically more realistic cases of these kinds of theories. We find that for general scalar-tensor gravitation the range of masses boson stars might have is comparable with the general relativistic case. We also analyze the possible formation of boson stars along different eras of cosmic evolution, allowing for the effective gravitational constant far out from the star to deviate from its current value. In these cases, we find that the boson star masses are sensitive to these kinds of variations, within a typical few percent. We also study cases in which the coupling is implicitly defined, through the dependence on the radial coordinate, allowing it to have significant variation in the radius of the structure.
format	Articulo Preprint
author	Torres, Diego F.
author_facet	Torres, Diego F.
author_sort	Torres, Diego F.
title	Boson stars in general scalar-tensor gravitation: equilibrium configurations
title_short	Boson stars in general scalar-tensor gravitation: equilibrium configurations
title_full	Boson stars in general scalar-tensor gravitation: equilibrium configurations
title_fullStr	Boson stars in general scalar-tensor gravitation: equilibrium configurations
title_full_unstemmed	Boson stars in general scalar-tensor gravitation: equilibrium configurations
title_sort	boson stars in general scalar-tensor gravitation: equilibrium configurations
publishDate	1997
url	http://sedici.unlp.edu.ar/handle/10915/123168
work_keys_str_mv	AT torresdiegof bosonstarsingeneralscalartensorgravitationequilibriumconfigurations
bdutipo_str	Repositorios
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Boson stars in general scalar-tensor gravitation: equilibrium configurations

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