Spring 2024 Schedule
Monday
Colloquium: 4:30 pm - 5:40 pm ET
Tuesday
General Relativity Seminar: 11:00 am - 12:00 pm ET
CMSA Q&A Seminar: 12:30 pm - 1:30 pm ET
Wednesday
New Technologies in Mathematics Seminar: 2:00 pm - 3:00 pm ET
Thursday
Algebraic Geometry Pre-Seminar: 10:00 am - 10:30 am ET
Algebraic Geometry in String Theory Seminar: 10:30 am - 11:30 am ET
Active Matter Seminar: 1:00 pm - 2:30 pm ET, bi-weekly
Friday
Quantum Matter in Mathematics and Physics Seminar: 10:00 am - 11:30 am ET
Member Seminar: 12:00 pm - 1:00 pm ET
Category: Active Matter Seminar |
Title: Non-dispersive one-way signal amplification in sonic metamaterialsActive Matter Seminar Speaker: Jayson Paulose, University of Oregon Title: Control of parametric amplification in space-time modulated mechanical metamaterials Abstract: Active mechanical metamaterials harbor acoustic signal processing functionalities that are impossible to achieve in passive structures. Amplifying an elastic wave as it passes through the material is a prominent example, with potential applications in acoustic signal processing and loss mitigation. The fundamental mechanism for signal amplification of this kind is the parametric amplifier--an oscillator whose stiffness is periodically modulated in time, which can inject energy into mechanical oscillations. Typically, parametric amplification occurs at distinct modulation frequencies that are trivially related to the resonance modes of the unmodulated system, which restricts its utility for amplifying signals with complex spatial or... |
Category: Colloquium |
Speaker: Sarah HarrisonTitle: ColloquiumColloquium Speaker: Sarah Harrison, Northeastern University |
Category: Member Seminar |
Title: Member SeminarCMSA Member Seminar Speaker: Sergiy Verstyuk |
Category: General Relativity Seminar |
Speaker: Albert LawTitle: Real-time observables in horizon thermodynamicsGeneral Relativity Seminar Speaker: Albert Law, Stanford Title: Real-time observables in horizon thermodynamics Abstract: Euclidean black hole 1-loop determinants have recently been shown to compute a renormalized thermal canonical partition function for free fields in Lorentzian signature. A key ingredient is a 'quasinormal mode (QNM) character', whose Fourier transform equals the renormalized spectral density of the single-particle Hamiltonian. Using a static patch in de Sitter space as an example, in this talk, I will offer new perspectives on the QNM character, including its connection with the local density of states for the single-particle quantum mechanical problem associated with the Klein-Gordon equation, and its direct relationships with (thermal) correlators of the free fields. I will discuss how these considerations might point... |
Category: Algebraic Geometry in String Theory Seminar |
Speaker: Eric Pichon-PharabodTitle: Algebraic Geometry in String Theory SeminarAlgebraic Geometry in String Theory Seminar Speaker: Eric Pichon-Pharabod, Universite Paris-Saclay |
Category: Quantum Matter |
Title: Quantum Matter in Mathematics and Physics SeminarQuantum Matter in Mathematics and Physics Seminar |
Category: Member Seminar |
Speaker: Robert MoscropTitle: Member SeminarCMSA Member Seminar Speaker: Robert Moscrop, Harvard CMSA |
Category: General Relativity Seminar |
Speaker: Mikhail MolodykTitle: General Relativity SeminarGeneral Relativity Seminar Speaker: Mikhail Molodyk, Stanford |
Category: General Relativity Seminar |
Title: General Relativity SeminarGeneral Relativity Seminar Speaker: Marcelo Disconzi, Vanderbilt University |
Category: Member Seminar |
Title: Member SeminarCMSA Member Seminar Speaker: Jue Liu |
Category: Algebraic Geometry in String Theory Seminar |
Speaker: Franco RotaTitle: Algebraic Geometry in String Theory SeminarAlgebraic Geometry in String Theory Seminar Speaker: Franco Rota, University of Glasgow |
Category: Active Matter Seminar |
Title: Active Matter SeminarActive Matter Seminar Speaker: Kevin Mitchell, University of California, Merced |
Category: Quantum Matter |
Speaker: Mikhail IvanovTitle: Love and NaturalnessQuantum Matter in Mathematics and Physics Seminar Speaker: Mikhail Ivanov (MIT) Title: Love and Naturalness Abstract: Recent progress in gravitational wave astronomy has spurred the development of efficient tools to describe gravitational binary dynamics. One such tool is classical worldline effective field theory (EFT). In the first part of my talk, I will show how to use this EFT for systematic studies of tidal heating and deformations (Love numbers) of compact objects. I will present a gauge-invariant definition of Love numbers and show how to extract them in a coordinate-independent way from scattering amplitudes of the gravitational Raman process. I will show that the worldline EFT exhibits strong fine-tuning when applied to black holes. This gives rise to a naturalness... |