Gauge Fixing and Scattering Amplitudes in String Field Theory around Universal Solutions
نویسندگان
چکیده
We study a gauge fixed action of open string field theory expanded around the universal solution, which has been found as an analytic classical solution with one parameter, a. For a > −1/2, we are able to reproduce open string scattering amplitudes in the theory fixed in the Siegel gauge. At a = −1/2, all scattering amplitudes vanish and there is no open string excitation in the gauge fixed theory. These results support the conjecture that the universal solution can be regarded as a pure gauge or the tachyon vacuum solution. ∗) E-mail: [email protected] ∗∗) E-mail: [email protected]. 1 typeset using PTPTEX.cls 〈Ver.0.89〉 §
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