306 citations · 2.6k across the 51 of their papers we have counts for
53 papers
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…
Emerging entanglement on network histories
Cecilia Giavoni, Stefan Hofmann, Maximilian Koegler
We show that quantum fields confined to Lorentzian histories of freely falling networks in Minkowski spacetime probe entanglement properties of vacuum fluctuations that extend unre…
Perturbative quantum consistency near black-hole horizon formation
Stefan Hofmann, Maximilian Koegler, Florian Niedermann
We study the prelude to black-hole formation using a suspended shell composed of physical matter that fulfills the dominant energy condition. Here, the collapse of the shell is bro…
Physics in precision-dependent normal neighborhoods
Bruno Hoegl, Stefan Hofmann, Maximilian Koegler
We introduce a procedure to determine the size and shape of normal neighborhoods in any spacetimes and their dependence on the precision of the measurements performed by arbitrary…
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…
Small-scale structure from charged leptophilia
Ottavia Balducci, Stefan Hofmann, Alexis Kassiteridis
We consider a charged leptophilic extension of the Standard Model of particle physics as a minimal dark sector. It accomodates a WIMP paradigm at the TeV-scale that is sufficient t…