Sunday, January 04, 2015

[1501.00473] Path integrals for actions that are not quadratic in their time derivatives

[1501.00473] Path integrals for actions that are not quadratic in their time derivatives:



 "The standard way to construct a path integral is to use a Legendre transformation to find the hamiltonian, to repeatedly insert complete sets of states into the time-evolution operator, and then to integrate over the momenta. This procedure is simple when the action is quadratic in its time derivatives, but in most other cases Legendre's transformation is intractable, and the hamiltonian is unknown. This paper shows how to make path integrals without using the hamiltonian."



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