Events on Wednesday, December 15th, 2021
- Academic Calendar
- Last class day
- Abstract: *Note: actual end time may vary.*
- Theory Seminar (High Energy/Cosmology)
- The Large Scale Structure of α' Effects in String Theory
- Time: 1:00 pm - 2:00 pm
- Place: Chamberlin 5280
- Speaker: Andreas Schachner, University of Cambridge
- Abstract: In this talk, I discuss three approaches to deriving and understanding α' effects in String Theory. I present preliminary results of a project on completing the ten-dimensional type II effective actions at higher order in string perturbation theory. In this context, I provide concrete evidence at the level of five-point superstring amplitudes that the kinematics in the maximally U(1)-violating sector is obtained from standard superspace integrals over sixteen fermionic coordinates. This is in line with 11D superparticle amplitudes in M-theory compactified on 2-tori where the well-known modular forms required for SL(2,Z) invariance of type IIB arise from integrating out winding modes on the torus.
- Host: Lars Aalsma