Speaker
Dr
Ashot Gasparyan
(Ruhr University Bochum)
Description
An important feature of an effective field theory is its renormalizability, which implies that
one can apply a certain power counting to renormalized quantities and perform a systematic expansion of the calculated observables in terms of some small parameter.
When nonperturbative effects become relevant, the requirement of the renormalizability imposes nontrivial constraints on a choice of the effective interaction and the renormalization scheme. We discuss several instructive examples and counterexamples
of renormalizability to illustrate potential issues one has to deal with in the realistic calculations such as nuclear chiral EFT.
Primary author
Dr
Ashot Gasparyan
(Ruhr University Bochum)
Co-author
Prof.
Evgeny Epelbaum
(Ruhr University Bochum)
