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Regularization of identity based solution in string field theory

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Abstract

We demonstrate that an Erler-Schnabl type solution in cubic string field theory can be naturally interpreted as a gauge invariant regularization of an identity based solution. We consider a solution which interpolates between an identity based solution and ordinary Erler-Schnabl one. Two gauge invariant quantities, the classical action and the closed string tadpole, are evaluated for finite value of the gauge parameter. It is explicitly checked that both of them are independent of the gauge parameter.

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  1. Yokote Seiryo Gakuin High School, 147-1 Maeda, Osawa, Yokote, 013-0041, Japan

    Syoji Zeze

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  1. Syoji Zeze
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Zeze, S. Regularization of identity based solution in string field theory. J. High Energ. Phys. 2010, 70 (2010). https://doi.org/10.1007/JHEP10(2010)070

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