Tootfinder

Quantum entanglement of Hawking-Partner modes in expanding cavities
Jos\'e Manuel Montes-Armenteros, Javier Olmedo
https://arxiv.org/abs/2508.00423 https://

Quantum entanglement of Hawking-Partner modes in expanding cavities
This article investigates quantum entanglement generated within a one-dimensional cavity where one boundary undergoes prescribed acceleration, a setup designed to mimic aspects of Hawking radiation. We quantify quantum correlations using logarithmic negativity for bipartitions where subsystem $A$ is a given mode and subsystem $B$ the rest of the system. For initial pure states, we also consider a given mode and reconstruct its partner using the Hotta-Schützhold-Unruh formula, obtaining identic…

Robustness of analogue Hawking radiation in cavities with moving boundaries
Alberto Garc\'ia Mart\'in-Caro, Javier Olmedo, Jose M. S\'anchez Vel\'azquez
https://arxiv.org/abs/2507.13894

Robustness of analogue Hawking radiation in cavities with moving boundaries
In this work we explore the limitations and robustness of thermal radiation in dynamical Casimir systems serving as analogs for Hawking radiation. Through detailed numerical analysis, we characterize particle production spectra in cavities with moving boundaries under various configurations, including expanding, collapsing, and rigidly accelerating scenarios. We find that thermal signatures emerge in specific expanding cavity configurations but are highly dependent on frequency bands and accele…

Duality Symmetry and Anomaly for Gravitational Waves in Curved Spacetime
Adrian del Rio, Javier Olmedo, Ant\'onio Torres Manso
https://arxiv.org/abs/2507.22588 https://

Duality Symmetry and Anomaly for Gravitational Waves in Curved Spacetime
The vacuum Einstein equations admit a formulation closely analogous to the source-free Maxwell theory. In particular, the linearized equations exhibit an electric-magnetic duality symmetry. We develop a framework that makes this analogy manifest by explicitly identifying the electric and magnetic components of perturbative gravitational waves. Within this formulation, we show that duality rotations between these gravitoelectric and gravitomagnetic fields constitute a Noether symmetry of the lin…

Production, Quality Assurance and Quality Control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber
Acerbi, Adhikari, Agnes, Ahmad, Albergo, Albuquerque, Alexander, Alton, Amaudruz, Angiolilli, Aprile, Corona, Auty, Ave, Avetisov, Azzolini, Back, Balmforth, Olmedo, Barrillon, Batignani, Bhowmick, Bloem, Blua, Bocci, Bonivento, Bottino, Boulay, Braun, Buchowicz, Bussino, Busto, Cadeddu, Cadoni, Calabrese, Camillo, Caminata, Canci, Caravati, C\'ardenas-Montes, Cargioli, …

Production, Quality Assurance and Quality Control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber
The DarkSide-20k dark matter direct detection experiment will employ a 21 m^2 silicon photomultiplier (SiPM) array, instrumenting a dual-phase 50 tonnes liquid argon Time Projection Chamber (TPC). SiPMs are arranged into modular photosensors called Tiles, each integrating 24 SiPMs onto a printed circuit board (PCB) that provides signal amplification, power distribution, and a single-ended output for simplified readout. 16 Tiles are further grouped into Photo-Detector Units (PDUs). This paper de…