High Energy Theory Seminar: Sphere packing, gravity, and the conformal bootstrap
Tom Hartman (Cornell University)
I will describe recent progress on the connections between three topics: conformal field theory, the sphere packing problem, and quantum gravity in three dimensions. The link is provided by a technique…
Physics and Astronomy Colloquium: “The String Landscape and the Swampland"
Cumrun Vafa (Harvard University)
String theory landscape of vacua point to new consistency conditions that a quantum gravitational system must satisfy. There are only a small number of quantum field theories that satisfy these…
Thesis Defense: “Exploring relationships between structure, dynamics, and the effects of local perturbations in networks"
Lia Papadopoulos (University of Pennsylvania)
Committee: Danielle S. Bassett (primary supervisor), Randall Kamien (chair), Eleni Katifori, Victor Preciado, Mirjam Cvetic
Thesis Defense: "Volatile Organic Compound Detection and Disease Diagnostics Using DNA-Functionalized Carbon Nanotube Sensor Arrays"
Christopher Kehayias (University of Pennsylvania)
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Primakoff Lecture: “The Life and Death of Turbulence”
Nigel Goldenfeld (University of Illinois – Urbana Champaign)
Turbulence is the last great unsolved problem of classical physics. But there is no consensus on what it would mean to actually solve this problem. In this colloquium, I propose that turbulence is most…
Mathematical Biology seminar: "Spatio-temporal heterogeneities in a mechano-chemical model of cell migration"
Andreas Buttenschoen (University of British Columbia)
Small GTPases, such as Rac and Rho, are well known central regulators of cell morphology and motility, whose dynamics also play a role in coordinating collective cell migration. Experiments have shown…
High Energy Experiment Seminar: Track-triggering at CMS for the High-Luminosity LHC
Louise Skinnari (Northeastern University)
The high luminosity upgrade of the Large Hadron Collider (LHC), scheduled for 2025-2027, will significantly increase the instantaneous luminosity of the LHC collisions. The resulting large proton-proton…
Condensed and Living Matter Seminar: "Exploiting the Singh Center’s Nanoscale Characterization Facility in Condensed Matter Research"
Eric Stach (University of Pennsylvania)
Over the past several years, there have been significant investments in instrumentation for electron and ion microscopy in the Singh Center. I spoke to this group in the Fall of 2017, outlining what were then ‘plans…
Astronomy Seminar: Assembly bias of cosmic neutral hydrogen with neural networks and symbolic regression
Jay Wadekar (NYU)
Hydrodynamic simulations have a huge computational cost (~10 million CPU hours for 0.001 Gpc^3 volume), and cannot therefore be directly used in predictions for upcoming cosmological surveys which…