Peierls bracket

In theoretical physics, the Peierls bracket is an equivalent description[clarification needed] of the Poisson bracket.It can be defined directly from the action and does not require the canonical coordinates and their canonical momenta to be defined in advance.[clarification needed] The bracket[clarification needed] is defined as as the difference between some kind of action of one quantity on the other, minus the flipped term.This article incorporates material from the Citizendium article "Peierls bracket", which is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License but not under the GFDL.Peierls, R. "The Commutation Laws of Relativistic Field Theory," Proc.
theoretical physicsPoisson bracketactioncanonical coordinatescanonical momentaquantum mechanicscommutatorLie bracketCitizendium