“School of Physics”

Back to Papers Home
Back to Papers of School of Physics

Paper   IPM / P / 7639
School of Physics
  Title:   Bouncing Cosmologies and Self-Gravitational Corrections
  Author(s):  M. R. Setare
  Status:   Published
  Journal: Phys. Lett. B
  Vol.:  602
  Year:  2004
  Pages:   1-7
  Supported by:  IPM
  Abstract:
The semiclassical corrections to the Cardy-Verlinde entropy of a five-dimensional Schwarzschild anti de-Sitter black hole (SAdS5) are explicitly evaluated. These corrections are considered within the context of KKW analysis and arise as a result of the self-gravitation effect. In addition, a four-dimensional timelike brane is considered as the boundary of the SAdS5 bulk background. It is already known that the induced geometry of the brane is exactly given by that of a radiation-dominated FRW universe. Exploiting the CFT/FRW-cosmology relation, we derive the self-gravitational corrections to the first Friedmann-like equation which is the equation of the brane motion. The additional term that arises due to the semiclassical analysis, can be viewed as stiff matter where the self-gravitational corrections act as the source for it. This result is contrary to standard analysis that regards the charge of SAdS5 bulk black hole as the source for stiff matter. A very interesting feature of the solutions of FRW equation is that they all (for k=0,±1) have a non-vanishing minimum value for the scale factor.

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right