The old and the new of parity-violating two-pion-exchange $NN$ potential

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We consider the parity-violating two-pion-exchange potential obtained from the covariant formalism in the past and the state-of-the-art effective field theory approach. We discuss the behavior of the potential in coordinate space and its application to the parity-violating asymmetry in $\vec{n} p \to d γ$ at threshold.
4 pages, contribution to the conference Chiral07 held in Osaka, Japan, Nov. 13-16, 2007

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