Quantum information analysis of quantum phase transitions in a one-dimensional V1-V2 hard-core-boson model

Abstract

The entanglement entropy and quantum fidelity in a hard-core-boson model with nearest- and next-nearest-neighbor interactions are studied numerically. By using exact diagonalization and the density matrix renormalization group, the effects of interactions on entanglement entropy and fidelity susceptibility in the model are investigated. We focus our attention on looking for three quantum phase transitions. It is found that the first derivative of the entanglement entropy can indicate all of three phase transitions, while the fidelity susceptibility cannot predict the transition from superfluid to bond-order in a finite-size system.

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Cited by in corpus (7)

• Operationally accessible entanglement of one dimensional spinless fermions
• Spectral function and fidelity susceptibility in quantum critical phenomena
• Quantum phase transitions in spin-1 XXZ chains with rhombic single-ion anisotropy
• Pairing in spin chains and spinless fermions with next-nearest neighbour interactions
• Two-fluid coexistence and phase separation in a one dimensional model with pair hopping and density interactions
• Entanglement entropy and fidelity susceptibility in the one-dimensional spin-1 XXZ chains with alternating single-site anisotropy
• Entanglement and edge effects in superpositions of many-body Fock states with spatial constraints