Modified Laplace transformation method at finite temperature: application to infra-red problems of N component φ 4 theory ABSTRACT Modified Laplace transformation method is applied to N component φ 4 theory and the finite temperature problem in the massless limit is reexamined in the large N limit. We perform perturbation expansion of the dressed thermal mass in the massive case to several orde...

The traditional theory of Laplace transformation (TLT) as it was put forward by Gustav Doetsch was principally intended to provide an operator calculus for ordinary derivable functions of the t-domain. As TLT does not account for the behavior of the inverse L-transform at t = 0 its validity is essentially confined to t > 0. However, from solutions of linear differential equations (DEs) one can ...

Among the numerical inverse Laplace transformation (NILT) methods, those that belong to Abate-Whitt framework (AWF) are considered be most efficient ones currently. It is a characteristic feature of AWF NILT procedures they independent transform function and time point interest. In this work we propose an procedure goes beyond limitation optimize accuracy utilizing also