Roman N. Lee

most citedGroup structure of the integration-by-part identities and its application to the reduction of multiloop integrals

92 citations · 97 across the 2 of their papers we have counts for

collaborators

2 papers

hep-ph2008★ 5 cited

$(Z α)^{4}$ order of the polarization operator in Coulomb field at low energy

G. G. Kirilin, R. N. Lee

We derive the low-energy expansion of $(Z α)^{2}$ and $(Z α)^{4}$ terms of the polarization operator in the Coulomb field. Physical applications such as the low-energy Delbrück sca…

hep-ph2008★ 92 cited

Group structure of the integration-by-part identities and its application to the reduction of multiloop integrals

R. N. Lee

The excessiveness of integration-by-part (IBP) identities is discussed. The Lie-algebraic structure of the IBP identities is used to reduce the number of the IBP equations to be co…

(Zα)4 order of the polarization operator in Coulomb field at low energy

Group structure of the integration-by-part identities and its application to the reduction of multiloop integrals

$(Z α)^{4}$ order of the polarization operator in Coulomb field at low energy