321 citations
- University of BonnDE11 papers
- Max Planck Institute for MathematicsDE8 papers
- Max Planck Institute for Mathematics in the SciencesDE8 papers
- Academy of Mathematics and Systems ScienceCN6 papers
- Chinese Academy of SciencesCN6 papers
- Beijing Normal UniversityCN4 papers
- Institute of Theoretical PhysicsCN4 papers
- Harbin Institute of TechnologyCN3 papers
- Hebei Normal UniversityCN2 papers
- Institute of High Energy PhysicsCN2 papers
- Korea Advanced Institute of Science and TechnologyKR2 papers
- Northeast Normal UniversityCN2 papers
6 papers · 1 filter
Lower Bounds of Concurrence for Tripartite Quantum Systems
Xiu-Hong Gao, Shao-Ming Fei, Ke Wu
We derive an analytical lower bound for the concurrence of tripartite quantum mixed states. A functional relation is established relating concurrence and the generalized partial tr…
Two-Setting Bell Inequalities for Many Qubits
Kai Chen, Sergio Albeverio, Shao-Ming Fei
We present a family of Bell inequalities involving only two measurement settings of each party for N>2 qubits. Our inequalities include all the standard ones with fewer than N qubi…
Bell Inequalities Classifying Bi-separable Three-qubit States
Bao-Zhi Sun, Shao-Ming Fei
We present a set of Bell inequalities that gives rise to a finer classification of the entanglement for tripartite systems. These inequalities distinguish three possible bi-separab…
Non-singular solutions to the normalized Ricci flow equation
Fuquan Fang, Yuguang Zhang, Zhenlei Zhang
In this paper we study non-singular solutions of Ricci flow on a closed manifold of dimension at least 4. Amongst others we prove that, if M is a closed 4-manifold on which the nor…
Collapsed 5-manifolds with pinched positive sectional curvature
Fuquan Fang, Xiaochun Rong
Let M be a closed 5-manifold of pinched curvature 0<δ\le \text{sec}_M\le 1. We prove that M is homeomorphic to a spherical space form if M satisfies one of the following conditions…
Separability and Entanglement of Identical Bosonic Systems
Xiao-Hong Wang, Shao-Ming Fei, Ke Wu
We investigate the separability of arbitrary -dimensional multipartite identical bosonic systems. An explicit relation between the dimension and the separability is presented. I…