Skip to content
High Energy Theory artwork
October 18, 20213:00 pm – 4:00 pm (CDT)

T-duality and String Alpha’ Corrections


James Liu (University of Michigan)


Falk Hassler



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

Although T-duality is an inherently stringy symmetry, it can be seen at the effective field theory level, both in the classical two-derivative action and at the alpha' corrected level.  In fact, T-duality invariance can be a powerful tool in constraining the form of the alpha' corrections.  A particularly interesting framework involves a cosmological reduction where all spatial dimensions are compactified on a torus.  The resulting system only involves the generalized metric on the torus, giving rise to a generalized geometry approach to constructing T-duality invariants.  We explore both tree-level R^2 and R^4 corrections in the cosmological reduction and highlight the role of the generalized connection with torsion in constructing higher-curvature invariants.

Copyright © 2023. All rights reserved, Texas A&M University Trademark | Texas A&M University, College Station, Texas 77843