Gravitational Radiation of Rolling Tachyon
نویسندگان
چکیده
In this paper we compute the radiation of the massless closed string states due to the non-vanishing coupling to the rolling open string tachyon with co-dimensions larger than 3, and discuss the effect of back reaction to the motion of the rolling tachyon. We find that for small string coupling, the tachyonic matters remain in the late time, but it will completely evaporate away over a string scale decay time if the string coupling is huge. Comment on the implication of our results to the g-theorem of boundary conformal field theory is given.
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