In theoretical physics, the Peierls bracket is an equivalent description of the Poisson bracket that directly follows from the action and does not require the canonical coordinates and their canonical momenta to be defined in advance.
The Peierls bracket is an equivalent description of the Poisson bracket. This is in theoretical physics. This equivalent description of the Poisson bracket directly follows from the action. This equivalent description of the Poisson bracket does not require the canonical coordinates to be defined in advance. This equivalent description of the Poisson bracket does not require their canonical momenta to be defined in advance.