2026
03/19
OPEN
Date
2026/03/19（Thu）11:00〜12:00
Venue
3rd build. 1F Meeting room + Remote
Speaker
Vittorio Larotonda (University of Bologna)
Language
English
Contact
Yuta Hamada/yhamada-AT-post.kek.jp
Abstract
In this talk, I will discuss my research on non supersymmetric theories and anomalies. In particular, I will revisit the chiral spectra on charged 1- and 5-branes in the 10d non supersymmetric sp(16) string theory and verify anomaly cancellation via inflow. Furthermore, I will show compelling evidence that the global structure of the gauge group is Sp(16)/Z2 along with hints of a possible duality to a non-supersymmetric heterotic theory. Secondly, I will discuss the presence of a discrete topological term in heterotic strings and delve into its relation with anomaly inflow cancellation on the worldvolume of the non-supersymmetric NS5-brane. These insights will allow us to assess the consistency of candidate spectra for the six-dimensional theory living on these defects. Finally I will present a recent study of Type II non-supersymmetric toroidal asymmetric orbifolds with a vanishing cosmological constant at one-loop in string perturbation theory. This talk will be based on 2412.17894, 2507.11610 and 2602.07113.