405 citations · 815 across the 4 of their papers we have counts for
3 papers · 1 filter
Magnetism, coherent many-particle dynamics, and relaxation with ultracold bosons in optical superlattices
Thomas Barthel, Christian Kasztelan, Ian P. McCulloch +1
We study how well magnetic models can be implemented with ultracold bosonic atoms of two different hyperfine states in an optical superlattice. The system is captured by a two-spec…
Dephasing and the steady state in quantum many-particle systems
Thomas Barthel, Ulrich Schollwöck
We discuss relaxation in bosonic and fermionic many-particle systems. For integrable systems, the time evolution can cause a dephasing effect, leading for finite subsystems to cert…
Entanglement scaling in critical two-dimensional fermionic and bosonic systems
Thomas Barthel, Ming-Chiang Chung, Ulrich Schollwoeck
We relate the reduced density matrices of quadratic bosonic and fermionic models to their Green's function matrices in a unified way and calculate the scaling of bipartite entangle…