String Theory Seminar  

25/05/2020, 15:00 — 16:00 Europe/Lisbon — Online Instituto Superior Técnicohttp://tecnico.ulisboa.pt
Marcus Berg, Karlstad University

Plane gravitational waves and Jacobi-Maass forms

I will first review the classical Kronecker 2^nd limit formula, viewed as a relation between partition functions and Green’s functions in orbifolds of flat space (as discussed for example in arXiv:1407.0027, appendix E). I will then discuss the generalization of this relation to orbifolds of the gravitational plane wave, a Penrose limit of AdS (dual of the BMN limit in gauge theory). This provides a natural one-parameter deformation of Kronecker-Eisenstein series, and more generally of Jacobi-Maass forms. This talk is based on arXiv:1910.02745.