232 citations · 1.5k across the 53 of their papers we have counts for
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cond-mat.stat-mech2002★ 36 cited
Identification of topologically different valence bond states in spin ladders
Masaaki Nakamura
We discuss relation between three different methods to identify topologically distinct short-range valence-bond ground states in spin- two-leg ladders: the string order pa…
cond-mat.str-el2002★ 2 cited
Ground state of antiferromagnetic Heisenberg two-leg ladder in terms of the valence-bond solid picture
Munehisa Matsumoto, Synge Todo, Masaaki Nakamura +2
We have proposed the plaquette-singlet solid (PSS) ground state for the spin-1 antiferromagnetic Heisenberg two-leg ladder. Based on the PSS picture, we discuss the correspondence…
cond-mat.stat-mech2002★ 12 cited
Novel Order Parameter to Characterize Valence-Bond-Solid States
Masaaki Nakamura, Synge Todo
We propose an order parameter to characterize valence-bond-solid (VBS) states in quantum spin chains, given by the ground-state expectation value of a unitary operator appearing in…