i have been given a problem for writing s matrix in second order perturbative theory for an interaction hamiltonian with phi 4 and phi 3 contributions.(adsbygoogle = window.adsbygoogle || []).push({});

it is also given that our initial state is of 2 particles and final state is of three particles.

now in solving that i have to take time ordering of the hamiltonian at two different points.

problem is that i am unable to guess the right term of time ordering for the cpndition of two in coming and three outgoing particles.

can some body plz help me in writing that.

i have to submit my assignment after vacations

so its urgent

tayyaba

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# Homework Help: Phi 3 scalar field theory

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