出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We discuss the extraction of the electromagnetic and spin polarisabilities of nucleons from lattice
QCD [1]. We show that the external field method can be used to measure all the electromagnetic
and spin polarisabilities including those of charged particles. We then turn to the extrapolations
required to connect such calculations to experiment in the context of chiral perturbation theory,
finding a strong dependence on the lattice volume and quark masses.
