Speaker
Manuel Weingart
(Institute for Theoretical Physics, University of Bern)
Description
We consider 2-flavour QCD with light quark masses in a small spatial box, where the low lying excitations are that of an $O(4)$ rotator. This problem can be treated in chiral perturbation theory ($\delta$-regime). Up to NNL order the final result depends only on a few low energy constants $F$, $\Lambda_1$, $\Lambda_2$ and $B$. Comparing these results with that of numerical simulations in QCD should help to measure these low energy constants to good precision.
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Primary author
Manuel Weingart
(Institute for Theoretical Physics, University of Bern)
