3 papers
hep-th2026
An analogue of non-interacting quantum field theory in Riemannian signature
Mikhail Molodyk, András Vasy
In this paper, we define a model of non-interacting quantum fields satisfying on a Riemannian scattering space with two boundary components, i.e. a manifo…
gr-qc2025
The Feynman propagator for massive Klein-Gordon fields on radiative asymptotically flat spacetimes
Mikhail Molodyk, András Vasy
On a large class of asymptotically flat spacetimes which includes radiative perturbations of Minkowski space, we define a distinguished global Feynman propagator for massive Klein-…
math.SP2025
The essential self-adjointness of the wave operator on radiative spacetimes
Qiuye Jia, Mikhail Molodyk, Ethan Sussman
We prove the essential self-adjointness of the d'Alembertian , allowing a larger class of spacetimes than previously considered, including those that arise from perturbi…