15th annual conference on Relativistic Quantum Information (North)

Session

Monday Plenary Session

23 Jun 2025, 08:30

Aula Ottagonale di Fisica (University of Naples "Federico II")

158. Philosophy and history of QFT

Doreen Fraser (University of Waterloo)

23/06/2025, 08:50

Talk

I will survey a few topics in philosophy and history of QFT that are relevant to RQI, and then focus on a central topic: the Measurement Problem. In non-relativistic QM, one version of the Measurement Problem is that the measurement theory (i.e., the Born rule and state update rules) cannot be derived from the application of the dynamics (e.g., Schrodinger equation) to a measurement scenario....

159. Weighing the vacuum with the Archimedes experiment

Enrico Calloni (University of Naples)

23/06/2025, 09:30

Talk

Archimedes is an experiment designed to measure the discussed interaction between vacuum fluctuations and the gravitational field. It is based on the measurement of the weight variation of a suitable stack of Casimir cavities whose vacuum energy is varied thanks to a suitable superconducting phase transition. The experiment is currently being installed and commissioned at the Sos Enattos site...

166. Space and time correlations in quantum histories

Leonardo Castellani (UPO, Alessandria)

23/06/2025, 10:00

Talk

The formalism of generalized quantum histories allows a symmetrical treatment of space and time correlations, by taking different traces of the same history density matrix. We characterize spatial and temporal entanglement in this framework. An operative protocol is presented, to map a history state into the ket of a static composite system. We show, by examples, how Leggett-Garg and temporal...

167. Causality in relativity, philosophy and causal modeling

Emily Adlam (Chapman University, Orange)

23/06/2025, 11:10

Talk

In this talk, I will discuss the ways in which philosophical work on causation and physics research in quantum foundations can usefully inform and influence each other. I will introduce some important philosophical ideas about causation, including the asymmetry of causation and its relation to time-symmetry in macroscopic and microscopic physics. I will also discuss the causal modelling...

187. Measurement and preparation protocols for QFT on curved spacetimes

Chris Fewster (University of York)

23/06/2025, 11:50

Talk

"I will review the framework for measurement in QFT introduced in joint work with Rainer Verch [1], which provides a covariant and consistent description of measurements and state updates and (as an application) resolves the ""impossible measurement"" problems raised by Sorkin long ago [2]. The framework is also known to be comprehensive in the sense that there are classes of QFTs for which...

169. Harvesting stabilizer entropy and non-locality from a quantum field

Stefano Cusumano (University of Naples)

23/06/2025, 12:30

Talk

The harvesting of quantum resources from the vacuum state of a quantum field is a central topic in relativistic quantum information. While several proposals for the harvesting of entanglement from the quantum vacuum exist, less attention has been paid to other quantum resources, such as non-stabilizerness, commonly dubbed magic and quantified by the Stabilizer Rényi Entropy (SRE). In this...