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gr-qc2005
Gravitational Collapse of Circularly Symmetric Stiff Fluid with Self-Similarity in 2+1 Gravity
A. Y. Miguelote, N. A. Tomimura, Anzhong Wang
Linear perturbations of homothetic self-similar stiff fluid solutions, , with circular symmetry in 2+1 gravity are studied. It is found that, except for those with an…
gr-qc2003
Gravitational Collapse of Self-Similar Perfect Fluid in 2+1 Gravity
A. Y. Miguelote, N. A. Tomimura, Anzhong Wang
Perfect fluid with kinematic self-similarity is studied in 2+1 dimensional spacetimes with circular symmetry, and various exact solutions to the Einstein field equations are given.…
gr-qc2001
Evolution of the Density Contrast with Particle Production in a Gauge-Invariant Formalism
M. de Campos, N. Tomimura
In this work we derive the evolution equation for the density contrast considering open system cosmology, where the influence of adiabatic particle production process on the dynami…