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DTSTAMP:20250331T091819
DTSTART;TZID=America/Detroit:20250403T160000
DTEND;TZID=America/Detroit:20250403T170000
SUMMARY:Workshop / Seminar:Algebraic and Geometric Convergence of Kleinian Groups
DESCRIPTION:To study the topology of the deformation space of Kleinian groups\, we need to understand the limiting object of a convergence sequence of Kleinian groups. We would focus on two types of convergence\, the algebraic convergence and the geometric convergence. We would see\, the two types of convergence of the same sequence might results in manifolds with different topological structures\, and even when the two limits coincide as groups\, the limiting group could give rise to manifolds with different homeomorphic types.
UID:134491-21874410@events.umich.edu
URL:https://events.umich.edu/event/134491
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 2866
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250331T100423
DTSTART;TZID=America/Detroit:20250403T160000
DTEND;TZID=America/Detroit:20250403T170000
SUMMARY:Workshop / Seminar:Algebraic and Geometric Convergence of Kleinian Groups
DESCRIPTION:To study the topology of the deformation space of Kleinian groups\, we need to understand the limiting object of a convergence sequence of Kleinian groups. We would focus on two types of convergence\, the algebraic convergence and the geometric convergence. We would see\, the two types of convergence of the same sequence might results in manifolds with different topological structures\, and even when the two limits coincide as groups\, the limiting group could give rise to manifolds with different homeomorphism types.
UID:134495-21874426@events.umich.edu
URL:https://events.umich.edu/event/134495
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Free,Mathematics,seminar
LOCATION:East Hall - 2866
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20250313T112246
DTSTART;TZID=America/Detroit:20250403T160000
SUMMARY:Workshop / Seminar:Combining Vibronic and Environmental Effects with Machine Learning in Simulations of Linear and Nonlinear Optical Spectra: Resolving the Challenge of Modeling the Spectrum of GFP Chromophore in Water
DESCRIPTION:Including both environmental and vibronic effects is important for accurate simulation of optical spectra\, but combining these effects remains computationally challenging. This talk will outline two approaches for spectral simulations that consider both the explicit atomistic environment and vibronic transitions. Both phenomena are responsible for spectral shapes in linear spectroscopy and the electronic evolution measured in nonlinear spectroscopy. The first approach utilizes snapshots of chromophore-environment configurations for which chromophore normal modes are determined. The second approach obtains excitation energies for a series of time-correlated snapshots. Both approaches make strides towards more accurate optical spectroscopy simulations.  I will show how the approaches can also be made computationally feasible through machine learning of ground and excited state potentials\, opening the door to new physical insights of complex condensed phase systems.  By combining vibronic and environmental effects\, along with machine learning for high level wave function theory\, we resolve the long-standing challenge of accurately simulating the linear absorption spectrum of the aqueously solvated GFP chromophore.
UID:125085-21854355@events.umich.edu
URL:https://events.umich.edu/event/125085
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Chemistry,Physical Chemistry
LOCATION:Chemistry Dow Lab - 1640
CONTACT:
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