Physics

Abstract: Recently, many results concerning stable big bang formation have appeared. Most of the results concern stability of spatially homogeneous and isotropic solutions. However, a recent result of Fournodavlos, Rodnianski and Speck (FRS) covers...

Abstract: I will review the operator algebraic formalism that allows to work with quantum spin systems directly in the thermodynamic limit. I will explain how this formalism can be used to prove generalized Lieb-Schultz-Mattis theorems that give...

Abstract: Muon colliders offer a unique path to multi-TeV, high-luminosity lepton collisions. Muon collisions with a center-of-mass energy of 10 TeV or above would offer significant discovery potential where the constituent collision energies exceed...

Abstract: Besides providing a possible explanation to the strong CP problem and dark matter, the QCD axion possesses a rich cosmology. For example, if PQ breaking occurs after inflation, then axion cosmic strings form. Near the QCD phase transition...

Abstract: We study 4d SU(N) pure Yang-Mills theory with a topological theta-angle. It has been a long standing problem to study the theta-dependence of the free energy, and to settle on the fate of the CP symmetry at theta=pi. In this talk we...

Abstract: We present an extensive study of the effects of neutrino transport in 3-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated  neutrino...

Abstract: The TTbar deformation is a holographic theory describing holography a finite distance in the bulk.   If this theory can be UV completed, it could be a model of nonperturbative bulk quantum gravity.  However, it seems to be a non-unitary...

Abstract: I use the method of images to derive the dilaton boundary term of the classical string action in a $Z_2$ orbifold (half space) with Neumann boundary conditions. The derivation is carried out to first order in alpha prime from the...

Abstract: In spite of tremendous progress in mean-field spin glass theory over the last forty years, “realistic” spin glass models with short-range interactions remain shrouded in mystery. I will talk about recent progress on this topic, proving a...