2d Type 0B String Theory


Balthazar, B. (2022). 2d Type 0B String Theory. Perimeter Institute. https://pirsa.org/22030114


Balthazar, Bruno. 2d Type 0B String Theory. Perimeter Institute, Mar. 29, 2022, https://pirsa.org/22030114


          @misc{ pirsa_22030114,
            doi = {},
            url = {https://pirsa.org/22030114},
            author = {Balthazar, Bruno},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {2d Type 0B String Theory},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {mar},
            note = {PIRSA:22030114 see, \url{https://pirsa.org}}


In this talk, I will discuss the duality between the two-dimensional type 0B string theory and its dual matrix quantum mechanics. This duality has been a source of motivation and a useful toy model to explore many new features of string theory. I will first revisit the computation of closed string scattering amplitudes in string perturbation theory, using new numerical methods to compute Virasoro conformal blocks in 2d supersymmetric conformal field theories. Then, I will describe a worldsheet formalism to include non-perturbative corrections to closed string scattering amplitudes, mediated by D-instantons. This formalism is of general applicability, and can be straightforwardly implemented in other string models. In the type 0B string theory, this will allow us to extend the duality dictionary beyond perturbation theory.