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Chiral Perturbation Theory at Finite Volume and/or with Twisted Boundary Conditions

J. Bijnens, J. Relefors

in 34th annual International Symposium on Lattice Field Theory

Contribution: pdf


In this talk we discuss a number of ChPT calculations relevant for lattice QCD. These include the finite volume corrections at two-loop order for masses and decay constants. The second part is about hadronic vacuum polarization where we present the two-loop ChPT estimate for the disconnected and strange quark contributions. We also present the finite volume corrections at two-loop order. The final part is the one-loop finite volume with twisted boundary conditions contribution to $f_+(q^2)$ and the full $K_{\ell3}$ amplitude