Quenched string field theory |
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Affiliation: | Universidad Complutense, Ciudad Universitaria, E-28040 Madrid, Spain;CERN, CH-1211 Geneva 23, Switzerland |
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Abstract: | We construct a toy model of Witten's open string field theory by truncating the Virasoro group to its SU(1,1) subgroup. The string field is given in terms of finite-dimensional matrices, which satisfy a non-trivial BRST cohomology. The string gauge group is found to be SO(3). Finally, we perform the gauge fixing of the action, finding an explicit formula for calculating the partition function. |
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