On positive scalar curvature cobordisms and the conformal Laplacian on end-periodic manifolds

Demetre Kazaras, Daniel Ruberman, Nikolai Saveliev

We show that the periodic $\eta$-invariants introduced by Mrowka--Ruberman--Saveliev~\cite{MRS3} provide obstructions to the existence of cobordisms with positive scalar curvature met…