A Simple Analytic Solution for Tachyon Condensation
Abstract
In this paper we present a new and simple analytic solution for tachyon condensation in open bosonic string field theory. Unlike the B0 gauge solution, which requires a carefully regulated discrete sum of wedge states subtracted against a mysterious "phantom" counter term, this new solution involves a continuous integral of wedge states, and no regularization or phantom term is necessary. Moreover, we can evaluate the action and prove Sen's conjecture in a mere few lines of calculation.
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