We recommend a new convenient method for disentangling some exponential operators and derive a set of new operator identities. Especially, we derive the normal odering form of exp [fa^+a + ga^2+ + ka^2] without ap...We recommend a new convenient method for disentangling some exponential operators and derive a set of new operator identities. Especially, we derive the normal odering form of exp [fa^+a + ga^2+ + ka^2] without appealing to Lie algebra method. Application of these formulas in solving some dynamic Hamiltonian is presented.展开更多
基金supported by the National Natural Science Foundation of China under Grant Nos.10475056 and 10775097
文摘We recommend a new convenient method for disentangling some exponential operators and derive a set of new operator identities. Especially, we derive the normal odering form of exp [fa^+a + ga^2+ + ka^2] without appealing to Lie algebra method. Application of these formulas in solving some dynamic Hamiltonian is presented.