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DTSTART;TZID=America/New_York:20230216T130000
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DTSTAMP:20260405T013410
CREATED:20230824T181345Z
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UID:10001503-1676552400-1676556000@cmsa.fas.harvard.edu
SUMMARY:Towards programmable living materials and quantitative models of active matter
DESCRIPTION:Active Matter Seminar\n\n\nSpeaker: Jörn Dunkel\, MIT \nTitle: Towards programmable living materials and quantitative models of active matter \nAbstract: Over the last two decades\, major progress has been made in understanding the self-organization principles of active matter.  A wide variety of experimental model systems\, from self-driven colloids to active elastic materials\, has been established\, and an extensive theoretical framework has been developed to explain many of the experimentally observed non-equilibrium pattern formation phenomena. Two key challenges for the coming years will be to translate this foundational knowledge into functional active materials\, and to identify quantitative mathematical models that can inform and guide the design and production of such materials. Here\, I will describe joint efforts with our experimental collaborators to realize self-growing bacterial materials [1]\, and to implement computational model inference schemes for active and living systems dynamics [2\,3]. \n[1] Nature 608: 324\, 2022\n[2] PNAS 120: e2206994120\, 2023\n[3] eLife 10: e68679\, 2021
URL:https://cmsa.fas.harvard.edu/event/am-21623/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Active Matter Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Active-Matter-Seminar-02.16.23.png
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DTSTART;TZID=America/New_York:20230216T133000
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DTSTAMP:20260405T013410
CREATED:20230817T183826Z
LAST-MODIFIED:20240118T092821Z
UID:10001254-1676554200-1676557800@cmsa.fas.harvard.edu
SUMMARY:Quasinormal Modes from Penrose Limits
DESCRIPTION:General Relativity Seminar \nSpeaker: Kwinten Fransen (UC Santa Barbara) \nTitle: Quasinormal Modes from Penrose Limits \nAbstract: In this talk\, I will explain how to describe quasinormal modes with large real frequencies using Penrose limits. To do so\, I first recall relevant aspects of the Penrose limit\, and its resulting plane wave spacetimes\, as well as quasinormal modes to subsequently tie these together. Having established the main principle\, I will illustrate the usefulness of this point of view with the geometric realization of the emergent symmetry algebra underlying the quasinormal modes in the large real frequency limit and present its application to the astrophysically important example of Kerr black holes. Based on arXiv:2301.06999.
URL:https://cmsa.fas.harvard.edu/event/gr_21623/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:General Relativity Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-GR-Seminar-02.16.23.png
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