31 citations · 144 across the 18 of their papers we have counts for
9 papers · 1 filter
Effective Goldstone dynamics on cosmological space-times
Marc Schneider
We derive the Lehmann-Symanzik-Zimmermann reduction formalism for a massive spin-2 particle on Minkowski spacetime and extend the formalism to cosmological spacetimes. The reductio…
Probing of colliding wave spacetimes and a quantum Weyl conjecture
Ivo Sachs, Marc Schneider
We perform a quantum probing of colliding plane-wave space-times. In particular, we consider the Khan-Penrose and the Ferrari-Ibáñez solutions, which admit a strong and a weak sing…
A local diagnostic program for unitary evolution in general space-times
Ka Hei Choi, Stefan Hofmann, Marc Schneider
We present a local framework for investigating non-unitary evolution groups pertinent to effective field theories in general semi-classical spacetimes. Our approach is based on a r…
Quantum probing of null-singularities
Ivo Sachs, Marc Schneider, Maximilian Urban
We adapt the dual-null foliation to the functional Schrödinger representation of quantum field theory and study the behavior of quantum probes in plane-wave space-times near the nu…
Scalar lumps with a horizon
George Lavrelashvili, Jean-Luc Lehners, Marc Schneider
We study a self-interacting scalar field theory coupled to gravity and are interested in spherically symmetric solutions with a regular origin surrounded by a horizon. For a scalar…
A Quantum Complete Prelude to Inflation
Stefan Hofmann, Marc Schneider, Maximilian Urban
It is shown that the inflationary paradigm admits quantum complete extensions of space-time. The extended inflationary spacetimes still have geodesic borders, but quantum fields ar…