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Paper detail

Multi-$π^+$ systems in finite volume

We present a formalism to describe two-$π^+$ and three-$π^+$ dynamics in finite volume, the formalism is based on combination of a variational approach and the Faddeev method. Both pair-wise and three-body interactions are included in the presentation. Impacts of finite lattice spacing and the cubic lattice symmetry are also discussed. To illustrate application of the formalism, the pair-wise contact interaction that resembles the leading order interaction terms in chiral effective theory is used to analyze recent lattice results.

preprint2020arXivOpen access
Peng GuoBingwei Long
hep-phhep-lat
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Peng GuoBingwei Long

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