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gr-qc2026
Classical and quantum scattering of massive Klein--Gordon fields in asymptotically flat spacetimes
Mikhail Molodyk
We use microlocal tools to define distinguished incoming and outgoing vacuum states of the quantum theory of massive Klein--Gordon fields in non-trapping asymptotically flat spacet…
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-…