ChPT loops for the lattice: pion mass and decay constant, HVP at finite and $n\bar n$-oscillations
I will present higher loop order results on a number of calculations within Chiral perturbation Theory.
1) Preliminary results on a three-loop calculation of the pion mass and decay constant in two-flavour ChPT. For the pion mass all needed auxiliary parameters can probably be determined from lattice calculations of $\pi\pi$-scattering.
2) (The main part) Two-loop results at finite volume for hadronic vacuum polarization. Preliminary result can be found in the PhD thesis of Johan Relefors, available from http://home.thep.lu.se/~bijnens/publications/thesisjohanr.pdf This might include as well some preliminary results on electromagnetic corrections.
3) Chiral corrections to neutron-anti-neutron oscillations. Preliminary results are in the Master thesis of Erik Kofoed, available from http://lup.lub.lu.se/student-papers/record/8898924
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