DNA hybridization kinetics: zippering, internal displacement and sequence dependence
(2013)
Shell-filling effect in the entanglement entropies of spinful fermions
Physical Review Letters 110:11 (2013)
Abstract:
We consider the von Neumann and Rényi entropies of the one-dimensional quarter-filled Hubbard model. We observe that for periodic boundary conditions the entropies exhibit an unexpected dependence on system size: for L=4 mod 8 the results are in agreement with expectations based on conformal field theory, while for L=0 mod 8 additional contributions arise. We explain this observation in terms of a shell-filling effect and develop a conformal field theory approach to calculate the extra term in the entropies. Similar shell-filling effects in entanglement entropies are expected to be present in higher dimensions and for other multicomponent systems. © 2013 American Physical Society.Phase transitions in three-dimensional topological lattice models with surface anyons
(2013)