Mathematical Biology seminar: "Spinning helices, heaving panels, and waving tails: the role of flexibility in propulsion"
Lisa Fauci (Tulane University)
The observed gait of a swimmer arises from the interplay of internal force generation, the passive elastic properties of its body, and environmental features such as fluid viscosity,…
High Energy Theory Seminar: Entanglement entropies of equilibrated pure states and the origin of replica wormholes
Shreya Vardhan (MIT)
I will explain an approximation method that gives a simple universal expression for the Renyi entropies of an equilibrated pure state in a chaotic quantum many-body system. This expression is independent…
Astronomy Seminar: Speculating on the origin and future of FRBs
Liam Connor (Caltech)
Fast radio bursts (FRBs) are short-duration transients whose precise origins remain a mystery. A subset of FRBs is known to repeat; a subset of those appears to repeat in periodic activity windows.…
Mathematical Biology seminar: "Some PDEs in Evolution of Dispersal"
Adrian Lam (Ohio State University)
In the first part of the talk, we discuss the multi-species competition in a spatial domain, particularly the result of A. Hastings and some recent progress on the conjecture by Dockery…
High Energy Theory Seminar: Positivity with Gravity
Claudia de Rahm (Imperial College London)
In standard effective field theories, the notion of causality is intrinsically linked with that of subluminality and with a set of positivity constraints to be imposed on the low-energy scattering…
Mathematical Biology seminar: “Contracting ML and probabilistic methods for navigating time and space in genomics”
Richard Bonneau (Flatiron Institute)
I will describe new methods for spatial transcriptomics and spacial genomics and contrast these methods with previous single cell and longitudinal genomics analysis approaches. I will focus first on…
High Energy Theory Seminar: From SU(N) Seiberg-Witten Theory to Adjoint QCD
Emily Nardoni (UCLA)
Standard lore suggests that four-dimensional SU(N) gauge theory with 2 massless adjoint Weyl fermions ("adjoint QCD") flows to a phase with confinement and chiral symmetry breaking. In this talk, I will…
Astronomy Seminar: "How do you make a binary black hole?"
Carl Rodriguez (Carnegie Mellon)
Since 2015, LIGO and Virgo have detected more than 50 gravitational waves from merging black holes and neutron stars, ushering in a new era of observational astronomy. But how are the binary progenitors…
Mathematical Biology seminar: "Temporal network epidemiology: Impacts of concurrency and inter-event times"
Naoki Masuda (SUNY Buffalo)
Contact networks on which epidemic spreading occurs vary over time. Epidemic processes on such temporal networks are complicated by complexity of both network structure and temporal dimensions. We…
High Energy Theory Seminar: "Modified thermal histories and the small-scale matter power spectrum"
Jessie Shelton (University of Illinois, Urbana-Champaign)
Decoupled hidden sectors in the early universe can easily and generically result in departures from radiation domination prior to BBN, leaving a potentially observable footprint in the distribution of…