Physics

Eigenstate thermalization hypothesis (ETH) is a phenomena often observed in systems characterized by quantum chaos. In this talk, we study ETH in 2d CFTs with large central charges. In particular, we focus on observables consisting of bilocal "probe...

In my talk I will explicitly describe what topological termspreserving time-reversal symmetry one can introduce in 3+1d Yang-Mills theory. Classification of such terms corresponds to classification of SPTs via cobordisms proposed by Kapustin and...

In this talk I review new results obtained for SCFT's in 4 and 5 dimensions by compactifying 6 dimensional (1,0) SCFT's on a circle or on Riemann surfaces.

After recalling how some 4d N=2 gauge theories arise from reductions of 6d N=(2,0) superconformal theories on a Riemann surface, I will discuss two discrete quotients with codimension 2 orbifold singularities. In the first case the orbifold acts by...

Four-dimensional superconformal field theories can be studied and partially classified by compactifying six-dimensional ones on punctured Riemann surfaces. In this talk we discuss the holographic dual of this set-up and explore how various...

The multiscale entanglement renormalization ansatz (MERA) is a tensor network that can efficiently approximate ground states of critical spin chains --that is, lattice versions of 1+1 CFTs. Its network structure extends in an additional dimension...

Recent lattice results on $\theta$ at high temperatures call into question the standard semiclassical analysis of $\theta$-dependence at high temperatures. We examine arguments that there are large uncertainties in these computations, studying both...

Quantum field theories can have ordinary global symmetries, as well as generalized higher-form symmetries. 2-group symmetries arise when a generalized 1-form symmetry mixes with ordinary global symmetries. I will discuss theories with continuous 2...