Title: Motivic Superstring Amplitudes Speaker: Stephan Stieberger Date: Thursday, November 14, 2013 Time: 11:00am – 12:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: The structure of tree-level open and closed superstring amplitudes is analyzed. For the open superstring amplitude we find a striking and elegant form, which is bolstered … Read more
Title: Cluster Polylogarithms and Scattering Amplitudes Speaker: Marcus Spradlin Date: Tuesday, November 12, 2013 Time: 1:00pm – 2:00pm Place: Lecture Hall 102, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: I will define cluster polylogarithms and discuss their properties. Roughly speaking, a cluster polylogarithm on a cluster algebra A is a linear combination of polylogarithm functions … Read more
Title: BCJ Numerators at One–Loop From the Superstring: Five Points and Beyond Speaker: Oliver Schlotterer Date: Tuesday, November 12, 2013 Time: 11:00am – 12:30pm Place: Lecture Hall 102, Simons Center [box, type=”download”]Watch the video.[/box]
Title: Towards the Cone Conjecture for Hyperkahler Manifolds Speaker: Misha Verbitsky, Higher School of Economics (Moscow) Date: Friday, November 8, 2013 Time: 11:00am – 12:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: Let $M$ be a holomorphically symplectic manifold, and $K$ be its Kaehler cone. We show that all faces … Read more
Title: Phase Structure of ALH Moduli Spaces Speaker: Sergey Cherkis, University of Arizona Date: Thursday, November 7, 2013 Time: 2:00pm – 2:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: Moduli spaces of instantons and monopoles provide a rich source of hyperkaehler geometries. Depending on the space on which the … Read more
Title: Spectral Inequalities for Partial Differential Equations and their Applications Speaker: Ari Laptev, Mittag-Leffler Instutute Date: Thursday, November 7, 2013 Time: 1:00pm – 2:00pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: We shall discuss properties of the discrete and continuous spectrum of different classes of self-adjoint differential operators including … Read more
Title: Scattering of Massless Particles in Arbitrary Dimension Speaker: Song He, Institute for Advanced Study Date: Thursday, November 7, 2013 Time: 11:00am – 12:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box]
Title: Two topics in infrared behavior” Continued Speaker: George Sterman, YITP Date: Wednesday, November 6, 2013 Time: 11:10am – 12:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract I’ll sketch the diagrammatic basis of the all-orders infrared “safety” of certain transition probabilities, and also the role of the running coupling … Read more
Title: Moduli Spaces and the Mapping Class Group Speaker: Misha Verbitsky, Higher School of Economics (Moscow) Date: Tuesday, November 5, 2013 Time: 1:00pm – 2:00pm Place: Lecture Hall 102, Simons Center [box, type=”download”]Watch the video. View the Slides[/box] Abstract Let Comp be an infinite-dimensional space of all complex structures on a manifold, and … Read more
Title: Two topics in infrared behavior Speaker: George Sterman, YITP Date: Tuesday, November 5, 2013 Time: 11:00am – 12:30pm Place: Seminar Room 313, Simons Center [box, type=”download”]Watch the video.[/box] Abstract: I’ll sketch the diagrammatic basis of the all-orders infrared “safety” of certain transition probabilities, and also the role of the running coupling for … Read more
