Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 120301-120301.doi: 10.1088/1674-1056/21/12/120301
M. Radonjić, Slobodan Prvanović, Nikola Burić
M. Radonjić, Slobodan Prvanović, Nikola Burić
摘要: Coarse-graining of some sort is the fundamental and unavoidable step in any attempt to derive the classical mechanical behavior from the quantum formalism. We utilize two-mode Bose-Hubbard model to illustrate how different coarse-grained systems can be naturally associated with a fixed quantum system if it is compatible with different dynamical algebras. Alternative coarse-grained systems generate different evolutions of the same physical quantities, and the difference becomes negligible only in the appropriate macro-limit.
中图分类号: (Algebraic methods)