In Dyson series we use a time-ordered exponential by arguing that Hamiltonians at two different instants of time do not commute. Why is that so?
Can anyone explain with an example why should the same Hamiltonians at two different times not commute?
Thursday, April 25, 2019
quantum field theory - Time-ordering and Dyson series
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment