Abstract: We construct a family of
asymptotically flat Cauchy data for the Einstein vacuum equations
that contain no trapped surfaces, yet whose future development
gives rise to multiple strongly causal independent trapped
surfaces. In particular...
Abstract: Lightlike conformal
line defects should appear in a number of places in
theoretical physics, from null Wilson lines, to
impurities moving at the speed of sound in a material, and as
exponentials of light-ray/detector operators...
Abstract: In 2017, a proposal was made for
defining RT surfaces in asymptotically flat spacetimes, with the
goal of computing the entanglement entropy in a putative dual
theory.
To avoid confusion with the usual RT prescription, the
resulting...
Abstract: I will introduce an effective
field theory which describes scattering in the Regge limit in a
systematic triple expansion in terms of t/s, Gt, and G^2st. Using
the usual properties of the S-matrix, along with the emergent
symmetries of the...
Abstract: The structure of dark halos carries
signatures of their mass, dynamical state, and the nature of dark
matter itself. Some of the most constraining signals can be found
in the outskirts of galaxy clusters, which have recently
become...
Abstract: String spectra comprise infinitely
many physical states of arbitrarily high mass and spin, the
presence of all of which is crucial to the good UV behaviour of
string scattering amplitudes. Yet what do all these states look
like? In this...
Abstract: In this talk, I will introduce a new
approach for studying $d+1$ dimensional Euclidean Schwarzschild
black holes with Hawking temperature near the Hagedorn temperature,
as well as the Horowitz-Polchinski (HP) solutions. The
worldsheet...
Abstract: Fractionalization of the electron
charge is one of the most striking phenomena arising from strong
electron-electron interactions. A celebrated example is the
emergence of anyons with fractionally charged excitations in
fractional quantum...
Abstract: Schrodinger CFTs describe
non-relativistic fixed points with dynamical critical exponent z=2;
including the BCS-BEC crossover, heavy atoms in a harmonic trap,
nuclear physics EFTs, stochastic/Langevin systems, and
null-reductions of...
