1212.2045 (M. C. B. Abdalla et al.)

Quasi-homologous spherically symmetric branes and its breaking    [PDF]

M. C. B. Abdalla, P. Carlesso, J. M. Hoff da Silva

After revisiting the dynamical system based approach of spherically symmetric vacuum braneworlds, pointing out and studying the existence of a transcritical bifurcation as the dark pressure parameter changes its sign, we analyze some consequences of not discard the brane cosmological constant. For instance, it is pointed that the existence of an isothermal state equation between the dark fluid parameters cannot be obtained via the requirement of a quasi-homologous symmetry of the vacuum.

View original: http://arxiv.org/abs/1212.2045