In this letter, we shall show how to construct constrained Bell-type inequality for a generaltwo-party system, and violating this inequality is equivalent to be
Within the charge-spin separation fermion-spin theory, we show that the mechanism of superconductivity in the electron doped cobaltate Nax CoO2. yH2 O is ascrib
In this paper, we first theoretically report the magnetic and magneto-optical properties in paramagnetic media under high external magnetic field. Considering t
This article discusses the role of covariance correlation tensor in the establishment of the criterion of quantum entanglement. It gives a simple example to sho