1991/08/01 by Xiao-Gang Wen · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Advanced Condensed Matter Physics #Spinon #Quasiparticle #Physics #Mean field theory #Topological order #Spin (aerodynamics) #Condensed matter physics #Boson #Quantum spin liquid #Quantum mechanics #Fermion #Topology (electrical circuits) #Spin polarization #Quantum #Electron #Superconductivity
paper · doi:10.1103/physrevb.44.2664
openalex publication_date 1991/08/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
The mean-field theory of a T- and P-symmetric spin-liquid state is developed. The quasiparticle excitations in the spin-liquid state are shown to be spin-1/2 neutral fermions (the spinons) and charge e spinless bosons (the holons). The spin-liquid state is shown to be characterized by a nontrivial topological order. Although our discussions are based on the mean-field theory, the concept of the topological order and the associated universal properties (e.g., the quantum number of the quasiparticles) are expected to be valid beyond the mean-field theory. We also discuss the dynamical stability of the mean-field theory.