We explore the local quantum coherence and the local quantum uncertainty, based on Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in …
SM Hengstenberg, CEP Robin, MJ Savage - The European Physical …, 2023 - Springer
We examine how effective-model-space (EMS) calculations of nuclear many-body systems rearrange and converge multi-particle entanglement. The generalized Lipkin–Meshkov …
L Ciliberti, R Rossignoli, N Canosa - … Review A—Atomic, Molecular, and Optical …, 2010 - APS
We examine the quantum discord between two spins in the exact ground state of finite spin- 1/2 arrays with anisotropic XY couplings in a transverse field B. It is shown that in the vicinity …
We study the long-range quantum correlations in the anisotropic XY model. By first examining the thermodynamic limit, we show that employing the quantum discord as a figure …
We analyze the XY model characterized by an anisotropy γ in an external magnetic field, h, with respect to its genuine multipartite entanglement content (in the thermodynamic and …
Invariance under local unitary operations is a fundamental property that must be obeyed by every proper measure of quantum entanglement. However, this is not the only aspect of …
We examine the fermionic entanglement in the ground state of the fermionic Lipkin model and its relation with bipartite entanglement. It is first shown that the one-body entanglement …
In the traditional quantum theory, one-dimensional quantum spin models possess a factorization surface where the ground states are fully separable and have vanishing …
We analyze ground state (GS) factorization in general arrays of spins si with XXZ couplings immersed in nonuniform fields. It is shown that an exceptionally degenerate set of …