Archive of IAS Physics Group Meetings

Abstract: We discuss new sum rules and inequalities for the cusp anomalous dimensions of conformal line defects, derived from basic principles of quantum field theory. We briefly comment on their applications ranging from gauge theory to...

In this first group meeting of the academic year, we will all introduce ourselves and give a short description of our current research.

The plan for future group meetings is for members, visitors and faculty to give a pedagogical introductory talk on...

Abstract: I will describe a proposal for the CFT dual of the D1-D5-D5' system in the tensionless limit. More specifically, I will consider the case of a single D1-brane, and study the limit in which $g$ $Q_5^\pm \rightarrow 0$, with $g$ the string...

Abstract: The S-matrix bootstrap uses analyticity, unitarity, and crossing symmetry to place nonperturbative bounds on 4-point scattering amplitudes. In my talk, I describe the application of the bootstrap to the scattering of O(4) symmetric scalars...

Abstract: There is a longstanding dream of realizing large-N Yang-Mills theory in D = 3,4 as a theory of confining strings. So far, our knowledge of this putative string is restricted to low energies, where one can use an effective field theory...

Abstract: I will present a class of exactly solvable lattice models of bosonic modes on the square lattice that realize chiral topological phases described by U(1)_{2n}​ Chern-Simons theory. The key ingredient is a factorization of the bosonic...

Abstract: Using the modified Villain lattice Hamiltonian formulation of the 1+1d compact boson theory, we construct exactly solvable abelian chiral lattice gauge theories in two spacetime dimensions. As a concrete example, we derive an explicit...

Abstract: In arxiv.org/abs/2306.16687 we developed a general construction of bulk 1+1d geometry from the two-point function of a generalized free field at the 0+1d boundary. This construction was numerical and requires discretization of time. In...

Abstract: I will briefly review the obstacles to constructing Anti–de Sitter vacua in string theory with very small extra dimensions compared to the AdS length, and the main ideas proposed to overcome them. I will then focus on a particular class of...