Vector Chiral Order in the QuantumXXZAntiferromagnet on a Triangular Lattice Analyzed with the Super-Effective-Field Theory

The chiral order in the spin 1/2 X X Z antiferromagnet H = J ∑(σ i x σ j x +σ i y σ j y +Δσ i z σ j z ) and especially in the X Y antiferromagnet on a two-di...