Theoretical Physics(DTP)
Physique théorique (DPT)
Taejin LEE
University of British Columbia
Free Field Representation of Rolling Tachyon
We apply the fermionization to the rolling tachyon system, which describes a fate of the unstable D-brane. The boundary state for the unstable D-brane is explicitly constructed and its exact evolution in time is obtained. The free fermion representation of the rolling tachyon system is found useful to understand how the openstring tachyon potential deforms the perturbative basis of closed string.