70 citations · 417 across the 24 of their papers we have counts for
3 papers · 2 filters
Description of thermal entanglement with the static path plus random-phase approximation
N. Canosa, J. M. Matera, R. Rossignoli
We discuss the application of the static path plus random phase approximation (SPA+RPA) and the ensuing mean field+RPA treatment to the evaluation of entanglement in composite quan…
Evaluation of ground state entanglement in spin systems with the random phase approximation
J. M. Matera, R. Rossignoli, N. Canosa
We discuss a general treatment based on the mean field plus random phase approximation (RPA) for the evaluation of subsystem entropies and negativities in ground states of spin sys…
Separability and entanglement in finite dimer-type chains in general transverse fields
Norma Canosa, Raul Rossignoli, Juan Mauricio Matera
We determine the conditions under which general dimer-type spin chains with couplings of arbitrary range in a general transverse field will exhibit an exactly separable parit…