60 citations · 132 across the 6 of their papers we have counts for
8 papers · 1 filter
Spacetime Quantum Actions
N. L. Diaz, J. M. Matera, R. Rossignoli
We propose a formulation of quantum mechanics in an extended Fock space in which a tensor product structure is applied to time. Subspaces of histories consistent with the dynamics…
History state formalism for scalar particles
N. L. Diaz, J. M. Matera, R. Rossignoli
We present a covariant quantum formalism for scalar particles based on an enlarged Hilbert space. The particular physical theory can be introduced through a timeless Wheeler DeWitt…
Of Local Operations and Physical Wires
Dario Egloff, Juan Mauricio Matera, Thomas Theurer +1
In this work (multipartite) entanglement, discord and coherence are unified as different aspects of a single underlying resource theory defined through simple and operationally mea…
Entanglement and area laws in weakly correlated gaussian states
J. M. Matera, R. Rossignoli, N. Canosa
We examine the evaluation of entanglement measures in weakly correlated gaussian states. It is shown that they can be expressed in terms of the singular values of a particular bloc…
Even-odd entanglement in boson and spin systems
Raul Rossignoli, Norma Canosa, Juan Mauricio Matera
We examine the entanglement entropy of the even half of a translationally invariant finite chain or lattice in its ground state. This entropy measures the entanglement between the…
Evaluation of pairwise entanglement in translationally invariant systems with the random phase approximation
Juan Mauricio Matera, Raul Rossignoli, Norma Canosa
We discuss a general mean field plus random phase approximation (RPA) for describing composite systems at zero and finite temperature. We analyze in particular its implementation i…