Exact Rolling Tachyon in Noncommutative Field Theory
نویسنده
چکیده
We find exact rolling tachyon solutions in DBI type noncommutative field theory with constant open string metric and noncommutative parameter on an unstable Dp-brane. Their functional shapes span all possible homogeneous rolling tachyon solutions, i.e., they are hyperbolic-cosine, hyperbolic-sine, and exponential under 1/ cosh runaway NC tachyon potential. Even if general DBI type NC electric field is turned on, only constant electric field satisfies equations of motion and again exact rolling tachyon solutions are obtained.
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