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I=2 $ππ$ scattering using G-parity boundary condition

Changhoan Kim
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Abstract

To make the $ππ$ state with non-zero relative momentum as the leading exponential, we impose anti-periodic boundary condition on the pion, which is implemented by imposing G-parity or H-parity on the quark fields at the boundary. With this, we calculate the I=2 $ππ$ phase shift from lattice simulation by using Lüscher's formula.

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Changhoan Kim. 2003-11-03. I=2 $ππ$ scattering using G-parity boundary condition. https://doi.org/10.1016/s0920-5632(03)02528-3

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