The effective theory for the hierarchical fractional quantum Hall (FQH) effect is proposed. We also derive the topological numbers K matrix and t vector and the
In this paper, two (3+1)-dimensional equations are investigated. A uto-Backlund transformation is obtained,which is used with some ansatze to seek new types of
Concurrence can measure the entanglement property of a system. If the channel is a pure state, positive concurrence state can afford the good performance in the