arXiv subjects

Cheng-zu Li

Publications and source records attributed to Cheng-zu Li.

2 recordsLinked to original sources

arXiv2002

Distinguishing locally of quantum states and the distillation of entanglement

This paper try to probe the relation of distinguishing locally and distillation of entanglement. The distinguishing information (DI) and the maximal distinguishing information (MDI) of a set of pure states are defined. The interpretation of distillation of entanglement in term of information is given. The relation between the maximal distinguishing information and distillable entanglement is gained. As a application of this relation the distillable entanglement of Bell-diagonal states is present.

quant-ph↗

arXiv1999

QCD sum rule analysis of the subleading Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for B->D_1 l\barνand B->D_2^* l\barν

We present a QCD sum rule calculation of the Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for the semileptonic decays B->D_1(2420)l\barνand B->D_2^*(2460)l\barνin the framework of heavy quark effective theory. These two universal functions, associated with the matching of the weak currents in QCD onto those in the effective theory, appear at the order 1/m_Q in the heavy quark expansion of meson weak decay form factors.

hep-ph↗