14 papers
Bose polarons as relativistic Unruh-DeWitt detectors: Entanglement harvesting from Bose-Einstein condensates
T. Rick Perche, Francesco Gozzini, Markus K. Oberthaler
We show that a bound impurity in a Bose-Einstein condensate can be directly mapped to an Unruh-DeWitt detector interacting with a relativistic quantum field. We provide explicit ex…
Non-perturbative measurements of two-point functions in quantum field theory
Sebastian Holmén, T. Rick Perche
We present a non-perturbative method through which local probes can access the two-point function of a quantum field within a region of spacetime. By considering a lattice of gaple…
Optimization of entanglement harvesting with arbitrary temporal profiles: the limit of second order perturbation theory
Marcos Morote-Balboa, T. Rick Perche
We study the protocol of entanglement harvesting when two local probes couple to the vacuum of a real scalar quantum field with arbitrary temporal profiles. We use a Hermite expans…
When does entanglement through gravity imply gravitons?
Nikolaos Mitrakos, Maria Papageorgiou, T. Rick Perche +1
Detection of entanglement through the Newtonian potential has been claimed to support the existence of gravitons, by extrapolating to a thought experiment which demonstrates that c…
(PhD Thesis) The Information Locally Stored in Quantum Fields: From Entanglement to Gravity
T. Rick Perche
This is an updated version of my PhD thesis, defended at the University of Waterloo on the 2nd of April 2025, uploaded to the ArXiv with the goal of reaching a wider audience. The…
Finite-size clocks in quantum field theory and the twin paradox
Matheus H. Zambianco, T. Rick Perche
Vacuum fluctuations in quantum field theory impose fundamental limitations on our ability to measure time at arbitrarily short scales. To investigate the impact of universal quantu…