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math-ph2024
Microlocal Analysis of a Deformed Quantum Field Theory
Rishabh Ballal, Albert Much, Rainer Verch
A deformation technique, known as the warped convolution, takes quantum fields in Minkowski spacetime to quantum fields in noncommutative Minkowski space-time. Since a quantum fiel…
gr-qc2024★ 5 cited
Kodama-like Vector Fields in Axisymmetric Spacetimes
Philipp Dorau, Rainer Verch
We extend the concept of the Kodama symmetry, a quasi-local time translation symmetry for dynamical spherically symmetric spacetimes, to a specific class of dynamical axisymmetric…
math-ph2024★ 2 cited
Disjointness of inertial KMS states and the role of Lorentz symmetry in thermalization
Albert Georg Passegger, Rainer Verch
For any local, translation-covariant quantum field theory on Minkowski spacetime, we prove that two distinct states that are invariant under the inertial time evolutions in differe…