3 papers
gr-qc2026
Entanglement and correlations between local observables in de Sitter spacetime
Patricia Ribes-Metidieri, Ivan Agullo, Béatrice Bonga
Studies of quantum field entanglement in de Sitter space based on the von Neumann entropy of local patches have concluded that curvature enhances entanglement between regions and t…
quant-ph2025
Partner-mode overlap as a symplectic-invariant measure of correlations in Gaussian quantum field theories
Ivan Agullo, Eduardo MartÃn-MartÃnez, Sergi Nadal-Gisbert +1
We introduce a locally symplectic-invariant quantifier of correlations between arbitrary bosonic Gaussian modes, with particular emphasis on quantum field theory. The quantity, den…
quant-ph2025
Correlation and Entanglement partners in Gaussian systems
Ivan Agullo, Eduardo MartÃn-MartÃnez, Sergi Nadal-Gisbert +2
We introduce a framework to identify where the total correlations and entanglement with a chosen degree of freedom reside within the rest of a system, in the context of bosonic man…