3 papers
physics.hist-ph2025
Deflating the Spacetime-Matter Dichotomy
Antonio Ferreiro, Alex Fleuren, Niels C. M. Martens
In this paper we analyse scalar-tensor theories-specific instances of which include mainstream inflation and dark energy models-in light of the spacetime-matter dichotomy. We argue…
physics.hist-ph2025
The Birth of Gravitational Particle Creation: the Enduring Legacy of Leonard Parker's 1966 Thesis
Antonio Ferreiro, Jose Navarro-Salas, Silvia Pla
This paper offers a historical overview of the origins and enduring significance of gravitational particle creation, a groundbreaking discovery first formulated in Leonard Parker's…
gr-qc2024
Physical scale adiabatic regularization in cosmological spacetimes
Antonio Ferreiro, Samuel Monin, Francisco Torrenti
We develop a new regularization method for the stress-energy tensor and the two-point function of free quantum scalar fields propagating in cosmological spacetimes. We proceed by e…