Physics

Abstract: I will discuss the log(N) corrections to the Euclidean gravitational path integral in the context of the AdS/CFT correspondence for 3d SCFTs arising from N M2-branes. These corrections can be computed in 4d gravity using heat kernel...

Abstract: Meromorphic amplitudes are the simplest non-trivial scattering amplitudes. They describe the exchange of infinitely many higher spin resonances in theories like string theory and large N gauge theories. Yet, despite being very simple...

Abstract: I will describe constructions of lattice field theories that assign a single bosonic variable to each site, rather a conjugate pair x,p. The information to realize a non-trivial dynamics is realized by non-trivial Poisson brackets between...

Abstract: The Miura transformation is a powerful formalism to construct generators of vertex operator algebras in free field representation. In this talk, I will explain that Miura operators are R-matrices of a certain quantum algebra, and comment...

Abstract: I will give an informal discussion of the bulk Hilbert space of JT gravity with and without matter, based on 2403.08696. 

Abstract: Recently it has been shown that black holes decohere quantum superpositions in their exterior, and suggested that this may be of fundamental importance for their quantum description [arXiv:2205.06279, arXiv:2301.00026, arXiv:2311.11461]. ...

Abstract: Pulsar timing arrays (PTAs) consist of a set of regularly monitored millisecond pulsars with extremely stable rotational periods. The arrival time of pulses can be altered by the passage of gravitational waves (GWs) between them and the...

Abstract: Holographic tensor networks model AdS/CFT, but so far they have been limited by involving only systems that are very different from gravity. Unfortunately, we cannot straightforwardly discretize gravity to incorporate it, because that...