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cond-mat.str-el2026
Topological properties of gapless phases in an interacting spinful wire
Polina Matveeva, Dmitri Gutman, Sam T. Carr
We study topology in gapless phases of an interacting spinful model with spin-charge separation. We focus on the gapless boundaries between symmetry-breaking phases.…
cond-mat.str-el2013★ 1 cited
Berezinskii-Kosterlitz-Thouless-type transitions in d=2 quantum O(2) and O(2)xO(2) nonlinear sigma models
C. A. Hooley, S. T. Carr, J. M. Fellows +1
We discuss the d=2 quantum O(2)xO(2) nonlinear sigma model as a low-energy theory of phase reconstruction near a quantum critical point. We first examine the evolution of the Berez…