7 papers · 1 filter
The Art of Branching: Cobordism Junctions of 10d String Theories
Chiara Altavista, Edoardo Anastasi, Roberta Angius +1
We describe the explicit construction of configurations of several 10d string theories joining at a 9d junction, providing a dynamical realization of cobordisms between multiple 10…
Non-invertible defects from the Conway SCFT to K3 sigma models II: duality and Fibonacci defects
Roberta Angius, Stefano Giaccari, Sarah M. Harrison +1
We continue the study, initiated in [hep-th:2504.18619], of topological defect lines (TDLs) in the Conway module and K3 non-linear sigma models (NLSMs). In the cas…
Towards a classification of topological defects in sigma models
Roberta Angius, Stefano Giaccari
Given a surface, a supersymmetric non-linear K3 sigma model is the internal superconformal field theory (SCFT) in a six dimensional compactification of type IIA superstring on…
Wall crossing structure from quantum phenomena to Feynman Integrals
Roberta Angius, Sergio Luigi Cacciatori, Anthony Massidda
A growing body of evidence suggests that the complexity of Feynman integrals is best understood through geometry. Recent mathematical developments [Kontsevich and Soibelman, arXiv:…
Non-invertible defects from the Conway SCFT to K3 sigma models I: general results
Roberta Angius, Stefano Giaccari, Sarah M. Harrison +1
We initiate the study of supersymmetry-preserving topological defect lines (TDLs) in the Conway moonshine module . We show that the tensor category of such defects,…
Relative Quantum Gravity: Localized Gravity and the Swampland
Edoardo Anastasi, Roberta Angius, Jesús Huertas +2
We perform a systematic study of the applicability of swampland constraints to theories of localized gravity. We find that these gravity theories can violate swampland constraints,…