Theory Group Special Seminar, 11 October 2018

Victor Rodriguez, Harvard

Long String Scattering in $$c=1$$ String Theory

abstract

We study the scattering of long strings in $$c=1$$ string theory, both in the worldsheet description and in the non-singlet sector of the dual matrix quantum mechanics. In particular, we compute the tree-level scattering amplitude of (1) a long string decaying by emitting a closed string, and (2) $$2\rightarrow2$$ scattering of long strings. From the worldsheet perspective, long string amplitudes are obtained from a decoupling limit of open string amplitudes on FZZT branes. Following Maldacena’s proposal, we compare them to computations in the adjoint and bi-adjoint sectors of the dual matrix model and find striking agreement, thereby providing strong evidence for the duality.