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Local Convertibility in quantum spin systems
Luigi Amico, Vladimir Korepin, Alioscia Hamma +2
Local Convertibility refers to the possibility of transforming a given state into a target one, just by means of LOCC with respect to a given bipartition of the system and it is po…
Control of entanglement transitions in quantum spin clusters
Hannah R. Irons, Jorge Quintanilla, Toby G. Perring +2
Clustered quantum materials provide a new platform for the experimental study of many-body entanglement. Here we address a simple model of a single-molecule nano-magnet featuring N…
Entanglement in One-Dimensional Spin Systems
A. Osterloh, L. Amico, F. Plastina +1
For the anisotropic XY model in transverse magnetic field, we analyze the ground state and its concurrence-free point for generic anisotropy, and the time evolution of initial Bell…
Mesoscopic BCS pairing in the repulsive 1d-Hubbard model
Luigi Amico, Andrea Mastellone, Andreas Osterloh
We study mesoscopic pairing in the one dimensional repulsive Hubbard model and its interplay with the BCS model in the canonical ensemble. The key tool is comparing the Bethe ansat…
Integrable spin-boson interaction in the Tavis-Cummings model from a generic boundary twist
Luigi Amico, Kazuhiro Hikami
We construct models describing interaction between a spin and a single bosonic mode using a quantum inverse scattering procedure. The boundary conditions are generically twiste…
Out of equilibrium correlation functions of quantum anisotropic XY models: one-particle excitations
Luigi Amico, Andreas Osterloh
We calculate exactly matrix elements between states that are not eigenstates of the quantum XY model for general anisotropy. Such quantities therefore describe non equilibrium prop…
Fermionic long range correlations realized by particles obeying deformed statistics
Andreas Osterloh, Luigi Amico, Ulrich Eckern
Deformed exchange statistics is realized in terms of electronic operators. This is employed to rewrite Hubbard type lattice models for particles obeying deformed statistics (we ref…
Exact solution of generalized Schulz-Shastry type models
A. Osterloh, L. Amico, U. Eckern
A class of integrable one-dimensional models presented by Shastry and Schulz is consequently extended to the whole class of one-dimensional Hubbard- or XXZ-type models with correla…
One-Dimensional XXZ Model for Particles Obeying Fractional Statistics
Luigi Amico, Andreas Osterloh, Ulrich Eckern
We define one-dimensional particles as non-abelian representations of the symmetric group . The exact solution of an type Hamiltonian built up with such particles is ach…