Critical colored-RVB states in the frustrated quantum Heisenberg model on the square lattice
Didier Poilblanc, Matthieu Mambrini, Sylvain Capponi
SciPost Phys. 7, 041 (2019) · published 2 October 2019
- doi: 10.21468/SciPostPhys.7.4.041
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Abstract
We consider a family of SU(2)-symmetric Projected Entangled Paired States (PEPS) on the square lattice, defining colored-Resonating Valence Bond (RVB) states, to describe the quantum disordered phase of the $J_1-J_2$ frustrated Heisenberg model.For $J_2/J_1\sim 0.55$ we show the emergence of critical (algebraic) dimer-dimer correlations -- typical of Rokhsar-Kivelson (RK) points of quantum dimer models on bipartite lattices -- while, simultaneously, the spin-spin correlation length remains short. Our findings are consistent with a spin liquid or a weak Valence Bond Crystal in the neighborhood of an RK point.
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Funders for the research work leading to this publication
- Agence Nationale de la Recherche [ANR]
- Grand Équipement National De Calcul Intensif (through Organization: Grand Equipement National de Calcul Intensif [GENCI])
- Université de Toulouse / University of Toulouse