Artículo
Gravitational waves from a Weyl-Integrable manifold: A new formalism
Fecha de publicación:
09/2016
Editorial:
Elsevier Science
Revista:
Physics of the Dark Universe
ISSN:
2212-6864
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study the variational principle over an Hilbert-Einstein like action for an extended geometry taking into account torsion and non-metricity. By extending the semi-Riemannian geometry, we obtain an effective energy-momentum tensor which can be interpreted as physical sources. As an application we develop a new manner to obtain the gravitational wave equations on a Weyl-integrable manifold taking into account the non-metricity and non-trivial boundary conditions on the minimization of the action, which can be identified as possible sources for the cosmological constant and provides two different equations for gravitational waves. We examine gravitational waves in a pre-inflationary cosmological model.
Palabras clave:
Gravitational Waves
,
Inflation
,
Nonmetricity
,
Torsion
,
Weyl-Integrable Gravity
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Articulos(IFIMAR)
Articulos de INST.DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Articulos de INST.DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Citación
Romero, Jesús Martín; Bellini, Mauricio; Madriz Aguilar, José Edgar; Gravitational waves from a Weyl-Integrable manifold: A new formalism; Elsevier Science; Physics of the Dark Universe; 13; 9-2016; 1-6
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