Quantization of Systems with Quadratic Derivative Interactions
We consider fields described by Lagrangian densities of the form ∂μϕG∂μϕ. We find that there is an ordering of operators in such systems which defines a unique Hamiltonian for which consistency between the Euler-Lagrange and Heisenberg field equations is obtained. This ordering results in a subtraction term which removes a divergent mass-like term to first order in the one-pion-to-one-pion transition amplitude.
Physical Review D
- Pub Date:
- March 1972