Shearing Expansion-free Spherical Anisotropic Fluid Evolution

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dc.creatorHerrera, L.
dc.creatorSantos, N. O.
dc.creatorWang, A.
dc.date2008-10-07
dc.date.accessioned2026-07-07T11:45:53Z
dc.date.available2026-07-07T11:45:53Z
dc.descriptionSpherically symmetric expansionfree distributions are systematically studied. The whole set of field equations and junction conditions are presented for a general distribution of dissipative anisotropic fluid (principal stresses unequal), and the expansionfree condition is integrated. In order to understand the physical meaning of expansionfree motion, two different definitions for the radial velocity of a fluid element are discussed. It is shown that the appearance of a cavity is inevitable in the expansionfree evolution. The nondissipative case is considered in detail and the Skripkin model is recovered.
dc.description24 Latex pages. To appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0810.1083
dc.identifierhttp://arxiv.org/abs/0810.1083
dc.identifierPhys.Rev.D78:084026,2008
dc.identifierdoi:10.1103/PhysRevD.78.084026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202031
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleShearing Expansion-free Spherical Anisotropic Fluid Evolution
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