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cond-mat1998
Fictitious flux confinement: magnetic pairing in coupled spin chains or planes
Martin Greiter
The spinon and holon excitations of two-leg Heisenberg or lightly doped t-J ladders are shown to be bound in pairs by string confinement forces given approximately by the antiferro…
cond-mat.str-el1998
The two-leg t-J ladder: a spin liquid generated by Gutzwiller projection of magnetic bands
Martin Greiter
The ground state of the two-leg Heisenberg ladder is identified as an RVB type spin liquid, which is generated by Gutzwiller projection of tight-binding bands with flux pi per plaq…