Energy Quantisation in Bulk Bouncing Tachyon

Details Energy Quantisation in Bulk Bouncing Tachyon Energy Quantisation in Bulk Bouncing Tachyon

2005-02-22

arxiv.org/abs/hep-th/0502199v2

JHEP0507:017,2005

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, minor changes, one reference added

Scientific paper

10.1088/1126-6708/2005/07/017

We argue that the closed string energy in the bulk bouncing tachyon background is to be quantised in a simple manner as if strings were trapped in a finite time interval. We discuss it from three different viewpoints; (1) the timelike continuation of the sinh-Gordon model, (2) the dual matrix model description of the (1+1)-dimensional string theory with the bulk bouncing tachyon condensate, (3) the c_L=1 limit of the timelike Liouville theory with the dual Liouville potential turned on. There appears to be a parallel between the bulk bouncing tachyon and the full S-brane of D-brane decay. We find the critical value \lambda_c of the bulk bouncing tachyon coupling which is analogous to \lambda_o=1/2 of the full S-brane coupling, at which the system is thought to be at the bottom of the tachyon potential.

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