Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-11-14
Phys.Lett. B561 (2003) 153-160
Physics
High Energy Physics
High Energy Physics - Theory
Latex 16 pages, typos corrected, add remarks, published version
Scientific paper
10.1016/S0370-2693(03)00412-X
The interaction between a parallel brane-antibrane and brane-antibrane is investigated by regarding the brane-antibrane pair as a kink or anti-kink type tachyon condensed state. As the kink-type tachyon condensed state is known as a non-BPS brane we expand the Lagrangian of tachyon effective field theory to the quadratic order in the off-diagonal fluctuation and then use the zeta-function regularization and Schwinger perturbative formula to evaluate the interaction within a kink-kink or a kink-antikink. The results show that while the kink and kink has repulsive force the kink and anti-kink has attractive force and may annihilate by each others. We therefore evaluate the free energy at finite temperature and determine the critical temperature above which the stable state of kink-antikink system may be found.
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