Perturbative calculation of multi-loop Feynman diagrams. New type of expansions for critical exponents

@article{Kleinert1999PerturbativeCO,
title={Perturbative calculation of multi-loop Feynman diagrams. New type of expansions for critical exponents},
author={H. Kleinert},
journal={Physics Letters B},
year={1999},
volume={465},
pages={235-240}
}

Abstract We show that the calculation of L -loop Feynman integrals in D dimensions can be reduced to a series of matrix multiplications in L dimensions. This leads to a new type of expansions for the critical exponents in three dimensions in which all coefficients are calculable exactly.