Entanglement entropy of two disjoint intervals and spin structures in interacting chains in and out of equilibrium
Vanja Marić,
Saverio Bocini,
Maurizio Fagotti
Abstract:We take the paradigm of interacting spin chains, the Heisenberg spin-$$ \frac{1}{2} $$
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XXZ model, as a reference system and consider interacting models that are related to it by Jordan-Wigner transformations and restrictions to sub-chains. An example is the fermionic analogue of the gapless XXZ Hamiltonian, which, in a continuum scaling limit, is described by the massless Thirring model. We work out the Rényi-α e… Show more
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