Shape dependence of superconformal defects

          @misc{ scivideos_PIRSA:19080066,
            doi = {10.48660/19080066},
            url = {https://pirsa.org/19080066},
            author = {Bianchi, Lorenzo},
            keywords = {Quantum Matter, Quantum Fields and Strings, Quantum Information},
            language = {en},
            title = {Shape dependence of superconformal defects},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {aug},
            note = {PIRSA:19080066 see, \url{https://scivideos.org/index.php/pirsa/19080066}}
          }
          

Abstract

The shape deformation of conformal defects is implemented by the displacement operator. In this talk we consider superconformal defects and we provide evidence of a general relation between the two-point function of the displacement and the one-point function of the stress tensor operator. We then discuss the available techniques for the computation of this one-point function. First, we show how it can be related to a deformation of the background geometry. Then we conclude with a discussion of surface defects in four-dimensional N=2 theories, where the chiral algebra provides an additional powerful tool.