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Dive into the research topics where Yumei Wu is active.

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Featured researches published by Yumei Wu.


General Relativity and Gravitation | 1999

Generalized Vaidya Solutions

Anzhong Wang; Yumei Wu

A large family of solutions, representing, ingeneral, spherically symmetric Type II fluid, ispresented, which includes most of the known solutions tothe Einstein field equations, such as, the monopole-de Sitter-charged Vaidya ones.


Classical and Quantum Gravity | 2004

Collapse of a scalar field in 2 + 1 gravity

Eric W. Hirschmann; Anzhong Wang; Yumei Wu

We consider the problem of critical gravitational collapse of a scalar field in 2 + 1 dimensions with spherical (circular) symmetry. After surveying all the analytic, continuously self-similar solutions and considering their global structure, we examine their perturbations with the intent of understanding which are the critical solutions with a single unstable mode. The critical solution which we find is the one which agrees most closely with that found in numerical evolutions. However, the critical exponent which we find does not seem to agree with the numerical result.


Physical Review D | 2003

Topological charged black holes in high dimensional spacetimes and their formation from gravitational collapse of a type II fluid

Yumei Wu; M. F. A. da Silva; N. O. Santos; Anzhong Wang

Topological charged black holes coupled with a cosmological constant in


General Relativity and Gravitation | 2006

Kink stability of isothermal spherical self-similar flow revisited

Anzhong Wang; Yumei Wu

{R}^{2}\ifmmode\times\else\texttimes\fi{}{X}^{D\ensuremath{-}2}


Mathematics and Mechanics of Solids | 1996

Vanishing Relaxation Limit of Viscoelasticity

Yumei Wu; I-Shih Liu

spacetimes are studied, where


International Journal of Modern Physics D | 2008

COLLAPSING FLUID WITH SELF-SIMILARITY OF THE SECOND KIND IN 2 + 1 GRAVITY

Miguel Martins; M. F. A. da Silva; Yumei Wu

{X}^{D\ensuremath{-}2}


Physical Review D | 2011

Cosmology in nonrelativistic general covariant theory of gravity

Anzhong Wang; Yumei Wu

is an Einstein space of the form


Tohoku Mathematical Journal | 1993

Oscillations of Volterra integral equations with delay

George L. Karakostas; I. P. Stavroulakis; Yumei Wu

{}^{(D\ensuremath{-}2)}{R}_{\mathrm{AB}}=k(D\ensuremath{-}{3)h}_{\mathrm{AB}}.


Archive | 1993

OSCILLATION OF VOLTERRA INTEGRAL EQUATIONS AND FORCED FUNCTIONAL DIFFERENTIAL EQUATIONS

Yumei Wu

The global structure for the four-dimensional spacetimes with


General Relativity and Gravitation | 2007

Kink stability of self-similar solutions of scalar field in 2 + 1 gravity

Anzhong Wang; Yumei Wu

k=0

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I-Shih Liu

Federal University of Rio de Janeiro

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M. F. A. da Silva

Rio de Janeiro State University

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N. O. Santos

National Council for Scientific and Technological Development

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