405 citations · 2.8k across the 45 of their papers we have counts for
10 papers · 1 filter
Eigenstate entanglement scaling for critical interacting spin chains
Qiang Miao, Thomas Barthel
With increasing subsystem size and energy, bipartite entanglement entropies of energy eigenstates cross over from the groundstate scaling to a volume law. In previous work, we poin…
Scaling functions for eigenstate entanglement crossovers in harmonic lattices
Thomas Barthel, Qiang Miao
For quantum matter, eigenstate entanglement entropies obey an area law or log-area law at low energies and small subsystem sizes and cross over to volume laws for high energies and…
Eigenstate entanglement: Crossover from the ground state to volume laws
Qiang Miao, Thomas Barthel
For the typical quantum many-body systems that obey the eigenstate thermalization hypothesis (ETH), we argue that the entanglement entropy of (almost) all energy eigenstates is des…
The matrix product approximation for the dynamic cavity method
Thomas Barthel
Stochastic dynamics of classical degrees of freedom, defined on vertices of locally tree-like graphs, can be studied in the framework of the dynamic cavity method which is exact fo…
A matrix product algorithm for stochastic dynamics on networks, applied to non-equilibrium Glauber dynamics
Thomas Barthel, Caterina De Bacco, Silvio Franz
We introduce and apply a novel efficient method for the precise simulation of stochastic dynamical processes on locally tree-like graphs. Networks with cycles are treated in the fr…
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…