135 citations · 694 across the 11 of their papers we have counts for
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A contour for the entanglement entropies in harmonic lattices
Andrea Coser, Cristiano De Nobili, Erik Tonni
We construct a contour function for the entanglement entropies in generic harmonic lattices. In one spatial dimension, numerical analysis are performed by considering harmonic chai…
Entanglement negativity in a two dimensional harmonic lattice: Area law and corner contributions
Cristiano De Nobili, Andrea Coser, Erik Tonni
We study the logarithmic negativity and the moments of the partial transpose in the ground state of a two dimensional massless harmonic square lattice with nearest neighbour intera…
Spin structures and entanglement of two disjoint intervals in conformal field theories
Andrea Coser, Erik Tonni, Pasquale Calabrese
We reconsider the moments of the reduced density matrix of two disjoint intervals and of its partial transpose with respect to one interval for critical free fermionic lattice mode…
Towards entanglement negativity of two disjoint intervals for a one dimensional free fermion
Andrea Coser, Erik Tonni, Pasquale Calabrese
We study the moments of the partial transpose of the reduced density matrix of two intervals for the free massless Dirac fermion. By means of a direct calculation based on coherent…
Partial transpose of two disjoint blocks in XY spin chains
Andrea Coser, Erik Tonni, Pasquale Calabrese
We consider the partial transpose of the spin reduced density matrix of two disjoint blocks in spin chains admitting a representation in terms of free fermions, such as XY chains.…
Entanglement entropy and negativity of disjoint intervals in CFT: Some numerical extrapolations
Cristiano De Nobili, Andrea Coser, Erik Tonni
The entanglement entropy and the logarithmic negativity can be computed in quantum field theory through a method based on the replica limit. Performing these analytic continuations…
Entanglement negativity after a global quantum quench
Andrea Coser, Erik Tonni, Pasquale Calabrese
We study the time evolution of the logarithmic negativity after a global quantum quench. In a 1+1 dimensional conformal invariant field theory, we consider the negativity between t…