233 citations · 1.8k across the 66 of their papers we have counts for
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Entanglement and nonclassicality for multi-mode radiation field states
J. Solomon Ivan, S. Chaturvedi, E. Ercolessi +4
Nonclassicality in the sense of quantum optics is a prerequisite for entanglement in multi-mode radiation states. In this work we bring out the possibilities of passing from the fo…
Essential singularity in the Renyi entanglement entropy of the one-dimensional XYZ spin-1/2 chain
Elisa Ercolessi, Stefano Evangelisti, Fabio Franchini +1
We study the Renyi entropy of the one-dimensional XYZ spin-1/2 chain in the entirety of its phase diagram. The model has several quantum critical lines corresponding to rotated XXZ…
From the Equations of Motion to the Canonical Commutation Relations
Elisa Ercolessi, Giuseppe Marmo, Giuseppe Morandi
The problem of whether or not the equations of motion of a quantum system determine the commutation relations was posed by E.P.Wigner in 1950. A similar problem (known as "The Inve…
Phase separation and pairing regimes in the one-dimensional asymmetric Hubbard model
L. Barbiero, M. Casadei, M. Dalmonte +3
We address some open questions regarding the phase diagram of the one-dimensional Hubbard model with asymmetric hopping coefficients and balanced species. In the attractive regime…