Events List

DateEvent TypeSpeaker
03/01/2019NYU-CCANYU-CCA [ + ]
03/01/2019HEP Journal ClubHEP Journal Club [ + ]
03/01/2019ISCISC [ + ]
03/04/2019CCPP Brown BagCANCELED [ + ]
03/04/2019Blanton Tinker PullenBlanton Tinker Pullen [ + ]
03/05/2019Modjaz Group MtgModjaz Group Mtg [ + ]
03/05/2019Astro SeminarJohan Samsing [ + ]
03/05/2019Astroparticle Group Meet [ + ]
03/06/2019HEP SeminarKatelin Schutz [ + ]
03/07/2019Astro PhAstro Ph [ + ]
03/08/2019OtherJoshua Ruderman [ + ]
03/08/2019HEP Journal ClubHEP Journal Club [ + ]
03/08/2019Informal HEP TalkHarikrishnan Ramani [ + ]
03/08/2019ISCISC [ + ]
03/11/2019CCPP Brown BagGia Dvali [ + ]
03/11/2019Blanton Tinker PullenBlanton Tinker Pullen [ + ]
03/12/2019Modjaz Group MtgModjaz Group Mtg [ + ]
03/12/2019Astro SeminarTejaswi Venumadhav [ + ]
03/13/2019ReservedKleban [ + ]
03/13/2019HEP SeminarDalimil Mazáč [ -- ]

Title: Sphere Packing and Quantum Gravity
Description: The sphere packing problem asks to find the densest possible packing of identical spheres in d dimensions. The problem was recently solved analytically in 8 and 24 dimensions by Viazovska et al., building on linear programming bounds of Cohn+Elkies. I will show that there is a close connection between these results on sphere packing and the modular bootstrap in two-dimensional conformal field theories. In particular, I will explain that Viazovska's solution was essentially rediscovered in the conformal bootstrap literature in the guise of "analytic extremal functionals". It corresponds to saturation of the modular bootstrap bounds by known 2D CFTs. Sphere packing in a large number of dimensions maps to the modular bootstrap at large central charge, which can be used to constrain quantum gravity in large AdS_3. We will use the new analytic techniques to improve significantly on the asymptotic upper bound on the mass of the lightest state in such theories. (2:00 PM - 3:30 PM, 726 Broadway, 940, CCPP Seminar)
03/14/2019Astro PhAstro Ph [ + ]
03/14/2019Astroparticle Group MeetWolfgang Kerzendorf [ + ]
03/15/2019NYU-CCANYU-CCA [ + ]
03/15/2019ISCISC [ + ]
03/18/2019CCPP Brown BagNO CCPP BROWN BAG TODAY [ + ]
03/19/2019Astro SeminarSPRING BREAK [ + ]
03/19/2019Informal Astro TalkDawn Erb [ + ]
03/20/2019HEP Seminar [ + ]
03/25/2019CCPP Brown BagNoemie Globus [ + ]
03/25/2019Blanton Tinker PullenBlanton Tinker Pullen [ + ]
03/26/2019Physics Dept Open HousePhysics Dept Open House [ + ]
03/26/2019Modjaz Group MtgModjaz Group Mtg [ + ]
03/26/2019Astro SeminarChung Pei Ma [ + ]
03/26/2019Astroparticle Group Meet [ + ]
03/27/2019HEP SeminarLuca Santoni [ + ]
03/28/2019Astro PhAstro Ph [ + ]
03/29/2019NYU-CCANYU-CCA [ + ]
03/29/2019HEP Journal ClubHEP Journal Club [ + ]
03/29/2019ISCISC [ + ]