Ordered product expansions of operators ( AB) ±m with arbitrary positive integer
Shi-Min Xu(徐世民), Yu-Shan Li(李玉山), Xing-Lei Xu(徐兴磊), Lei Wang(王磊), Ji-Suo Wang(王继锁)
中国物理B . 2020, (10): 100301 .  DOI: 10.1088/1674-1056/ab99aa