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DTSTAMP:20240324T220759
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T170000
SUMMARY:Workshop / Seminar:Differential Equations Seminar: Potential theory and Feynman diagrams in inverse problems
DESCRIPTION:In 1966\, Mark Kac posed the famous question “Can you hear the shape of a drum?” Mathematically\, this amounts to recovering the geometry of a Riemannian manifold from knowledge of its Laplace spectrum. In the case of strictly convex and smooth bounded planar domains\, the problem is very much open. One technique for studying the inverse spectral problem is via the wave trace\, a distribution with singular support contained in the length spectrum. The length spectrum is the collection of lengths of closed geodesics\, which for planar domains are just periodic billiard orbits. A dual object to study is the resolvent (of the Laplacian)\, whose trace asymptotics are related via the Payley-Wiener theorem to singularities of the wave trace. In this talk\, we introduce the Balian-Bloch-Zelditch method of constructing a parametrix for the resolvent trace via layer potentials. The result is an oscillatory integral to which one can apply the method of stationary phase. A novel feature is the organization of stationary phase coefficients by using graph theory and Feynman diagrams. The resulting formulas can be used to match Maslov indices of orbits and produce cancellations in the wave trace\, which shows that the length spectrum and the Laplace spectrum are inherently distinct objects\, at least insofar as the wave trace is concerned.
UID:119982-21843897@events.umich.edu
URL:https://events.umich.edu/event/119982
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240109T155914
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T180000
SUMMARY:Lecture / Discussion:EIHS Lecture: Promissory Talk and the Limits of Historical Imagination
DESCRIPTION:This lecture uses the concept of promissory talk to critically analyze one way of thinking “against history.” Promissory talk is a future-oriented version of counterfactual speculation. Rather than asking “what if…?” questions of historical events when the outcomes are already known\, promissory speech says “if only… then…” as a way of linking present policy actions to anticipated future results. Drawing on examples from Japan and the United States\, Professor Thomas will show how recent efforts to reframe children’s historical consciousness reflect a dubious promissory premise: “If only the kids had more national pride\, then all of our problems would be solved.\"\n\nJolyon Baraka Thomas is associate professor of religious studies at the University of Pennsylvania. He is the author of Faking Liberties: Religious Freedom in American-Occupied Japan (University of Chicago Press\, 2019) and Drawing on Tradition: Manga\, Anime\, and Religion in Contemporary Japan (University of Hawaii Press\, 2012). Thomas’s current research projects include the monograph Difficult Subjects: Religion and the Politics of Public Education under the US-Japan Security Alliance\, a co-authored book called Animating Action\, and the co-edited New Nanzan Guide to Japanese Religions.\n\nThis event presented by the Eisenberg Institute for Historical Studies. It is made possible in part by a generous contribution from Kenneth and Frances Aftel Eisenberg.
UID:108410-21819552@events.umich.edu
URL:https://events.umich.edu/event/108410
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:History
LOCATION:Tisch Hall - 1014
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240419T123119
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T170000
SUMMARY:Careers / Jobs:Explore EA Virtual Series: Tips & Tricks for Interviewing
DESCRIPTION:This Spring\, EisnerAmper presents a trio of enlightening virtual sessions that offer you a unique chance to connect with accounting professionals\, delve into DEI initiatives\, and explore career and internship opportunities with us.\n\n🌟 Session 3: Tips & Tricks for Interviewing\nApplying to jobs or internships? We’ve got the tools to prepare you onthe do’s and dont’s of interviewing. Join us to learn directly from skilled professionals and ace your upcoming job interview! \n\n🚀 Key Takeaways:\n- Learn the crucial do's and don'ts of job interviews.\n- Gain insider tips and strategies to excel in your upcoming interviews.\n- Prepareto leave a lasting impression and stand out from the competition.\n\n📅Session Date & Time:\nThursday\, April 4th at 4PM to 5PM (CT) \n\nJoin usfor this essential session to boost your interview skills and pave the way for your future career success.\n\n📌 Register Here!\nhttps://flows.beamery.com/eisnerampercareers/eisneramper-spring-virtual-series-tips-and-tricks-for-interviewing-tgrczmmqu\n\nWe look forward to helping you shine inyour next interview!\n\nBest regards\,\nThe EisnerAmper Campus Recruitment Team
UID:119173-21842296@events.umich.edu
URL:https://events.umich.edu/event/119173
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:
LOCATION:
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240326T084754
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T171500
SUMMARY:Workshop / Seminar:Harnessing energy flow in molecules & nanomaterials: A tale of forbidden transitions\, molecular motions\, and exotic excitations
DESCRIPTION:Spectroscopy has the potential to reveal the structure and dynamics of complex materials\, ranging from chromophores in solution to molecular aggregates and nanomaterial heterostructures. Yet\, disentangling spectral signals and extracting an intuitive picture of how excitations form\, move\, and exchange energy is one of the deepest and most persistent challenges of physical chemistry. In this talk\, I will offer two vignettes on our work developing and applying approaches to predict and understand spectral features in molecular and nanomaterial systems. In the molecular world\, I will show how our recent advances in condensed phase spectroscopy enable us to decipher a long-standing puzzle in porphyrin photophysics: why and how do the Q bands involved in energy transfer in photosynthesis and artificial energy conversion split? In the nanomaterial world\, I will highlight how we have been able to demonstrate how the unusual photophysics of atomically thin 2D materials enables hot carrier extraction for photocatalysis. Then\, I will illustrate how addressing the challenge of hot carrier extraction enabled us to develop a simple scheme to disentangle the signals of exotic quasiparticles that explain the tunability of the optical behavior of these materials as a function of potential\, laser fluence\, and time.
UID:109302-21821367@events.umich.edu
URL:https://events.umich.edu/event/109302
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Chemistry,Physical Chemistry,Science
LOCATION:Chemistry Dow Lab - 1640
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240328T071812
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T170000
SUMMARY:Workshop / Seminar:Interdisciplinary QC-CM Seminar | Bridging Hubbard and quantum Hall physics in twisted bilayer graphene
DESCRIPTION:Early on it was noticed that twisted bilayer graphene has elements in common with two paradigmatic examples of strongly correlated physics: Hubbard physics and quantum Hall physics. Indeed\, twisted bilayer graphene hosts flat topological bands\, but these bands host concentrated charge density\, experimental signs of fluctuating magnetism\, and signs of unconventional superconductivity. The emergence of fluctuating moments is particularly surprising\, as localized Wannier states do not exist in topological bands. I will discuss a model for the twisted bilayer graphene flat bands that centers the concentration of charge density and\, relatedly\, the concentration of Berry flux. After establishing good quantitative agreement with more microscopic models\, I will show how the model hosts parametrically decoupled flavor moments. These flavor moments are tied to Wannier states that are power-law delocalized\, with infinite localization length\, that nonetheless have parametrically small overlap with each other. I will conclude by discussing some experimental implications for this picture.
UID:120739-21845199@events.umich.edu
URL:https://events.umich.edu/event/120739
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Physics,Science
LOCATION:West Hall - 335
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240322T163421
DTSTART;TZID=America/Detroit:20240404T160000
DTEND;TZID=America/Detroit:20240404T170000
SUMMARY:Workshop / Seminar:Online Admitted Student Information Sessions
DESCRIPTION:Join the Transfer Student Center staff to learn more about:\n1. How to understand your transfer credit and how transfer credit will count for degree requirements.\n2. Orientation and registering for your first semester of classes.\n3. Connecting with the department that you plan to major in.\n4. Your housing options.\n5. And\, any other questions that you have.\n\nRegistration is required. Register using the link to the right. Zoom link will be sent after you register.
UID:120630-21845068@events.umich.edu
URL:https://events.umich.edu/event/120630
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Transfer Students
LOCATION:Off Campus Location
CONTACT:
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