High Energy seminar: New Standard Model constructions and insights into mirror symmetry from resolution-independent structure in Calabi-Yau fourfolds
Wati Taylor (MIT)
Recent work with Jefferson and Turner suggests that the intersection form on the "vertical" part of middle cohomology of a singular elliptic Calabi-Yau fourfold is independent of resolution. This…
Condensed and Living Matter Seminar: "Phases, geometry, and scales: bridging micro to macro in animal locomotion"
Jennifer Rieser (Emory)
Animals move through the terrestrial world in a variety of ways – burrowing, crawling, running, jumping, climbing, and building. Successful movements, often crucial for survival, depend sensitively…
HET Seminar: Enstrophy and black hole supertranslations
Natalia Pinzani-Fokeeva (MIT)
Enstrophy is an approximately conserved quantity in 2+1 dimensional non relativistic fluids that implies an inverse energy cascade in turbulent flows. In this talk, I will present an algorithm on how to construct an…
Astronomy Seminar: Towards precision measurements of dark matter
Sukanya Chakrabarti (Rochester Institute of Technology/IAS)
For more than a century now, our inference of the mass distributions (including dark matter) in galaxies have been based on modeling the positions and velocities of stars, i.e., using kinematic analyses,…
Condensed and Living Matter Seminar: "Optical Sensing of Moiré Physics in Semiconducting Moiré Superlattices"
Chenhao Jin (UCSB)
Moiré superlattices formed between two-dimensional (2D) materials provide new opportunities to engineer novel quantum phenomena, as exemplified by the intriguing observations in twisted bilayer graphene (…
High Energy Seminar: Automorphic Spectra and the Conformal Bootstrap
Sridip Pal (Institute for Advanced Study)
We point out that the spectral geometry of hyperbolic manifolds provides a remarkably precise model of the modern conformal bootstrap. As an application, we use conformal bootstrap techniques to derive…
Thesis Defense: "Cosmology and Astrophysics from small scales"
Shivam Pandey (University of Pennsylvania)
Committee members: Bhuvnesh Jain, Mark Devlin, Ravi Sheth (Chair), Elisabeth Krause (from University of Arizona) and Jonathan Heckman
HET Seminar: Renormalization Group Flow as Optimal Transport
Jordan Cotler (Harvard)
We establish that Polchinski's equation for exact renormalization group flow is equivalent to the optimal transport gradient flow of a relative entropy. This provides a…Condensed and Living Matter Seminar: "Topological Defects in Smectic Liquid Crystals: Applied Measured Foliations"
Randy Kamien (University of Pennsylvania)
Smectic liquid crystals are layered systems that abound in nature. I will introduce these materials and show how the long-lived, topologically protected
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