Genuine correlations in finite-size spin systems
arXiv:1206.1726 · doi:10.1142/S0217979213450343
Abstract
Genuine multipartite correlations in finite-size XY chains are studied as a function of the applied external magnetic field. We find that, for low temperatures, multipartite correlations are sensitive to the parity change in the Hamiltonian ground state, given that they exhibit a minimum every time that the ground state becomes degenerate. This implies that they can be used to detect the factorizing point, that is, the value of the external field such that, in the termodynamical limit, the ground state becomes the tensor product of single-spin states.
Submitted to Int. J. Mod. Phys. B, special issue "Classical Vs Quantum correlations in composite systems" edited by L. Amico, S. Bose, V. Korepin and V. Vedral
References in corpus (20)
- Quantum discord and the power of one qubit
- Experimental quantum computing without entanglement
- Interpreting quantum discord through quantum state merging
- Operational interpretations of quantum discord
- Linking Quantum Discord to Entanglement in a Measurement
- All non-classical correlations can be activated into distillable entanglement
- Are general quantum correlations monogamous?
- Genuine quantum and classical correlations in multipartite systems
- Monogamy properties of quantum and classical correlations
- Divergence of the entanglement range in low dimensional quantum systems
- Entanglement irreversibility from quantum discord and quantum deficit
- Conditions for Monogamy of Quantum Discord: Greenberger-Horne-Zeilinger versus W states
- Theory of ground state factorization in quantum cooperative systems
- Maximally discordant mixed states of two qubits
- Entanglement of finite cyclic chains at factorizing fields
- Two-spin entanglement distribution near factorized states
- Ground-state factorization and quantum phase transition in dimerized spin chains
- Local-channel-induced rise of quantum correlations in continuous-variable systems
- Reading entanglement in terms of spin configurations in quantum magnets
- Global Quantum Correlation in the Ising model