Math @ Duke

Publications [#248086] of M. Ronen Plesser
Papers Published
 Moore, G; Plesser, MR; Ramgoolam, S, Exact Smatrix for twodimensional string theory,
Nuclear Physics B, vol. 377 no. 12
(1992),
pp. 143190 [9111035]
(last updated on 2018/10/18)
Abstract: We formulate simple graphical rules which allow explicit calculation of nonperturbative c = 1 Smatrices. This allows us to investigate the constraint of nonperturbative unitarity, which indeed rules out some theories. Nevertheless, we show that there is an infinite parameter family of nonperturbatively unitary c = 1 Smatrices. We investigate the dependence of the Smatrix on one of these nonperturbative parameters. In particular, we study the analytic structure, background dependence and highenergy behavior of some nonperturbative c = 1 Smatrices. The scattering amplitudes display interesting resonant behavior both at high energies and in the complex energy plane.


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