Department of

# Mathematics

Seminar Calendar
for Mathematical Physics events the year of Tuesday, March 26, 2019.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
    February 2019            March 2019             April 2019
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1  2                   1  2       1  2  3  4  5  6
3  4  5  6  7  8  9    3  4  5  6  7  8  9    7  8  9 10 11 12 13
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31


Monday, February 4, 2019

12:00 pm in 343 Altgeld Hall,Monday, February 4, 2019

#### The integration problem for Courant algebroids

###### Rajan Mehta (Smith College)

Abstract: Courant algebroids originally appeared in the study of constrained Hamiltonian systems, but they are connected to many areas of mathematical physics, including multisymplectic geometry, double field theory, and (my personal interest) 3-dimensional topological field theory. Since a Courant structure involves a bracket that resembles a Lie bracket (but fails to be skew-symmetric), one might expect there to be some groupoid-like structure for which a Courant algebroid is the infinitesimal object. There is reason to believe that the answer should be a "symplectic 2-groupoid," but there are many devils in the details, including even the question of how "symplectic 2-groupoid" should be defined. I will describe various developments in this problem.

Thursday, March 14, 2019

12:30 pm in 464 Loomis,Thursday, March 14, 2019

#### A proposal for nonabelian mirrors in two-dimensional theories

###### Eric Sharpe (Virginia Tech)

Abstract: In this talk we will describe a proposal for nonabelian mirrors to two-dimensional (2,2) supersymmetric gauge theories, generalizing the Hori-Vafa construction for abelian gauge theories. By applying this to spaces realized as symplectic quotients, one can derive B-twisted Landau-Ginzburg orbifolds whose classical physics encodes quantum cohomology rings of those spaces. The proposal has been checked in a variety of cases, but for sake of time the talk will focus on exploring the proposal in the special case of Grassmannians.