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TQM unit is pleased to invite you to the seminar!
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Zoom seminar hosted by QG group.
Speaker: Peter Woit (Columbia University).
Title: Twistors and the Standard Model.
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As we will include Zoom links to the seminars, the seminar events are only visible to OIST community members.
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Theoretical Physics Seminar.
Speaker: Guilherme Sadovski (Gravity, Quantum Geometry and Field Theory).
Title: "Why is the world four-dimensional?"
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Theoretical Physics Seminar.
Speaker: Yasha Neiman (Quantum Gravity).
Title: "Scattering in the causal diamond"
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TQM unit is pleased to invite you to the seminar!
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Language: English
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Speaker: Mahir Can, Tulane University
Title: Spherical Varieties and Combinatorics
Abstract: Let G be a reductive complex algebraic group with a Borel subgroup B. A spherical G-variety is an irreducible normal G-variety X where B has an open orbit. If X is affine, or if it is projective but endowed with a G-linearized ample line bundle, then the group action criteria for the sphericality is in fact equivalent to the representation theoretic statement that a certain space of functions (related to X) is multiplicity-free as a G-module. In this talk, we will discuss the following question about a class of spherical varieties: if X is a Schubert variety for G, then when do we know that X is a spherical L-variety, where L is the stabilizer of X in G.
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Title: The three-body problem from Newton to gravitational waves
Speaker: Dr. Alessandro Alberto Trani
Abstract:
The gravitational few-body problem is one of the oldest conundrums in astronomy and classical mechanics. Yet, its simplest instance, the three-body problem, has no general analytical solution and only a partial statistical solution has been achieved so far. With the birth of gravitational wave astronomy and the rise in exoplanet discoveries, the three-body problem is again becoming central to explaining astrophysical phenomena.
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What kind of questions should I be asking when I meet someone from another culture for the first time? How do I avoid making a bad first impression? What kind of communication strategy should I have?