Critical properties and Rényi entropies of the spin-3/2 XXZ chain

Details Critical properties and Rényi entropies of the spin-3/2 XXZ chain Critical properties and Rényi entropies of the spin-3/2 XXZ chain

2012-01-16

arxiv.org/abs/1201.3305v2

Phys. Rev. B 85, 165112 (2012)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 10 figures; small text revisions and a new figure. Accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.85.165112

We discuss entanglement and critical properties of the spin-3/2 XXZ chain in its entire gapless region. Employing density-matrix renormalization group calculations combined with different methods based on level spectroscopy, correlation functions and entanglement entropies, we determine the sound velocity and the Luttinger parameter of the model as a function of the anisotropy parameter. Then, we focus on entanglement properties by systematically studying the behavior of R\'enyi entropies under both open and periodic boundary conditions, providing further evidence of recent findings about entanglement entropies of excited states in conformal field theory.

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