Topological charge scaling at a quantum phase transition
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DOI: 10.1103/physrevb.104.l020405
Abstract: We reexamine the Kosterlitz-Thouless phase transition in the ground state $|{\mathrm{\ensuremath{\Psi}}}_{0}\ensuremath{\rangle}$ of an antiferromagnetic spin-$\frac{1}{2}$ Heisenberg chain with nearest- and next-nearest-neighbor interactions $\ensuremath{\lambda}$ from a different perspective: After defining winding number (topological charge) $W$ in… read more here.
Keywords: ensuremath lambda; psi ensuremath; mathrm ensuremath; ensuremath ... See more keywords