From the 1 of 8 linked papers with an AI index.
8 papers
Gauge vs (hidden) physical symmetries of FLRW cosmologies
Andrea Calcinari, Adrià Delhom, Federico Greco +2
The paper analyses how gauge symmetries and hidden physical symmetries differ in flat FLRW cosmologies with multiple massless scalar fields, showing that conformal Killing vectors…
Analogue gravity with Bose-Einstein condensates
Adrià Delhom, Luca Giacomelli
Analogue gravity explores how collective excitations in condensed matter systems can reproduce the behavior of fields in curved spacetimes. An important example is the acoustic bla…
Collective excitations in quantum gravity condensates
Andrea Calcinari, Adrià Delhom, Daniele Oriti
A central open problem in quantum gravity is to understand how continuum spacetime emerges from quantum-geometric degrees of freedom in a background-independent setting. A many-bod…
Metric-affine bumblebee gravity: classical aspects
Adria Delhom, J. R. Nascimento, Gonzalo J. Olmo +2
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metr…
Toward the Observation of Entangled Pairs in BEC analogue Expanding Universes
Ivan Agullo, Adrià Delhom, Ãlvaro Parra-López
Pair creation is a fundamental prediction of quantum field theory in curved spacetimes. While classical aspects of this phenomenon have been observed, the experimental confirmation…
Entanglement from rotating black holes in thermal baths
Ivan Agullo, Anthony J. Brady, Adrià Delhom +1
We extend previous efforts to quantify the entanglement generated in Hawking's evaporation process by including rotation and thermal environments (e.g. the cosmic microwave backgro…