383 citations · 5.3k across the 80 of their papers we have counts for
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Critical theory of the topological quantum phase transition in a spin-2 chain
Hong-Chen Jiang, Stephan Rachel, Zheng-Yu Weng +2
We systematically study the phase diagram of S=2 spin chain, by means of density-matrix renormalization group and exact diagonalization methods and confirm the presence of a dimer…
Entanglement from Charge Statistics: Exact Relations for Many-Body Systems
H. Francis Song, Christian Flindt, Stephan Rachel +2
We present exact formulas for the entanglement and Rényi entropies generated at a quantum point contact (QPC) in terms of the statistics of charge fluctuations, which we illustrate…
Charge solitons and their dynamical mass in 1-D arrays of Josephson junctions
Jens Homfeld, Ivan Protopopov, Stephan Rachel +1
We investigate the charge transport in one-dimensional arrays of Josephson junctions. In the interesting regime of "small charge solitons" (polarons), the charge dynamics is strong…
Topological Insulators and Mott Physics from the Hubbard Interaction
Stephan Rachel, Karyn Le Hur
We investigate the Hubbard model on the honeycomb lattice with intrinsic spin orbit interactions as a paradigm for two-dimensional topological band insulators in the presence of in…
General Relation between Entanglement and Fluctuations in One Dimension
H. Francis Song, Stephan Rachel, Karyn Le Hur
In one dimension very general results from conformal field theory and exact calculations for certain quantum spin systems have established universal scaling properties of the entan…