Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-03-12
"Fourth Summer School in Modern Mathematical Physics", pp.215-228, B. Dragovic and B. Sazdovic (eds.), Belgrade Inst. Phys. Pr
Physics
High Energy Physics
High Energy Physics - Theory
To appear in "Fourth Summer School in Modern Mathematical Physics", Belgrade, Sept. 2006, B. Dragovich et.al. (eds), Belgrade
Scientific paper
We propose a general action describing the dynamics of lightlike (LL) p-branes in any odd (p+1) world-volume dimensions. Next, we consider self-consistent coupling of \textsl{LL}-membranes (p=2) to D=4 Einstein-Maxwell system plus a D=4 three-index antisymmetric tensor gauge field. The LL-brane serves as a material and charge source for gravity and electromagnetism and, furthermore, it produces a dynamical space-varying cosmological constant. We present static spherically-symmetric solutions where the space-time consists of two regions with different black-hole-type geometries and different values for dynamically generated cosmological constant, separated by the LL-brane which "straddles" their common event horizon.
Guendelman Eduardo I.
Kaganovich Alexander
Nissimov Emil
Pacheva Svetlana
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