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6 papers · 1 filter
Dirac Sea Contribution in Relativistic Random Phase Approximation
S. S. Wu, H. X. Zhang, Y. J. Yao
In the hadrodynamics (QHD) there are two methods to take account of the contribution of negative-energy states in the relativistic random phase approximation (RRPA). Dawson and Fur…
Second Quantized Reduced Bloch Equations and the Exact Solutions for Pairing Hamiltonian
Liqiang Wei, C. C. Sun
In this article, we present a set of hierarchy Bloch equations for the reduced density operators in either canonical or grand canonical ensembles in the occupation number represent…
Orbital Approximation for the Reduced Bloch Equations: Fermi-Dirac Distribution for Interacting Fermions and Hartree-Fock Equation at Finite Temperature
Liqiang Wei, Chiachung Sun
In this paper, we solve a set of hierarchy equations for the reduced statistical density operator in a grand canonical ensemble for an identical many-body fermion system without or…
Hierarchy Bloch Equations for the Reduced Statistical Density Operators in Canonical and Grand canonical Ensembles
Liqiang Wei, Chiachung Sun
Starting from Bloch equation for a canonical ensemble, we deduce a set of hierarchy equations for the reduced statistical density operator for an identical many-body system with tw…
Dynamics of Distillability
W. Wu, W. Wang, X. X. Yi
The time evolution of a maximally entangled bipartite systems is presented in this paper. The distillability criterion is given in terms of Kraus operators. Using the criterion, we…
Lepton Mass Matrices with Four Texture Zeros
Zhi-zhong Xing, He Zhang
We propose two anstze of lepton mass matrices with four texture zeros, and confront them with current experimental data on neutrino oscillations. The parameter space o…