Static and Dynamic Properties of Antiferromagnetic Heisenberg Ladders: Fermionic versus Bosonic Approaches

Abstract

In terms of spinless fermions via the Jordan-Wigner transformation along a snake-like path and spin waves modified so as to restore the sublattice symmetry, we investigate static and dynamic properties of two-leg antiferromagnetic Heisenberg ladders. The specific heat is finely reproduced by the spinless fermions, whereas the magnetic susceptibility is well described by the modified spin waves. The nuclear spin-lattice relaxation rate is discussed in detail with particular emphasis on its novel field dependence.

to be published in J. Phys. Soc. Jpn. 73, No. 3 (2004)

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Cited by in corpus (5)

• Phase diagram of hard-core bosons on clean and disordered 2-leg ladders: Mott insulator - Luttinger liquid - Bose glass
• Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets
• Constructing Landau framework for topological order: Quantum chains and ladders
• Brane order and quantum magnetism in modulated anisotropic ladders
• Fermi surface as a quantum critical manifold: gaplessness, order parameter, and scaling in $d$-dimensions