NLO chiral perturbation theory for non-degenerate two-flavor real and pseudoreal gauge theories is derived, fitted to Sp(4) lattice data, and applied to pion dark matter self-interactions.
Technicolor and other QCD-like theories at next-to-next-to-leading order
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abstract
We calculate the vacuum-expectation-value, the meson mass and the meson decay constant to next-to-next-to-leading-order in the chiral expansion for QCD-like theories with general $N_F$ degenerate flavours for the cases with a complex representation, a real and a pseudoreal representation, i.e. with global symmetry and breaking patters $SU(N_F)_L\times SU(N_F)_R\to SU(N_F)_V$, $SU(2N_F)\to SO(2N)$ and $SU(2N_F)\to Sp(2N_F)$. These calculations should be useful for lattice calculations for dynamical electroweak symmetry breaking and related cases.
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NLO observables for QCD-like theories and application to pion dark matter
NLO chiral perturbation theory for non-degenerate two-flavor real and pseudoreal gauge theories is derived, fitted to Sp(4) lattice data, and applied to pion dark matter self-interactions.