Density-functional theory (DFT) is shown to provide a conceptual and computational
framework for entanglement in interacting many-body quantum systems. DFT can, in …

We develop a general theory of the relation between quantum phase transitions (QPTs)
characterized by nonanalyticities in the energy and bipartite entanglement. We derive a …

The nature of entanglement in many-body systems is a focus of intense research with the
observation that entanglement holds interesting information about quantum correlations in …

We investigate quantum many-body systems where all low-energy states are entangled. As
a tool for quantifying such systems, we introduce the concept of the entanglement gap …

Entanglement in many-body quantum systems Page 190 4 Entanglement in many-body
quantum systems J. Ignacio Cirac Max-Planck-Institut für Quantenoptik, Hans-Kopferman-Strasse …

Shannon–Rényi entropies and associated participation spectra quantify how much a many-
body wave-function is localized in a given configuration basis. Using these tools, we present …

In the framework of quantum thermodynamics, we propose a method to quantitatively
describe thermodynamic quantities for out-of-equilibrium interacting many-body systems …

We introduce a measure called reduced entropy of sublattice to quantify entanglement in
spin, electron, and boson systems. By analyzing this quantity, we reveal an intriguing …

Entanglement in the ground state of a many-body quantum system may arise when the local
terms in the system Hamiltonian fail to commute with the interaction terms in the …

Characterizing and quantifying quantum correlations in states of many-particle systems is at
the core of a full understanding of phase transitions in matter. In this work, we continue our …