Speaker
Takeshi Yamazaki
Description
We observe that the ratio of the on-shell scattering amplitude to
the Bethe-Salpeter (BS) wave function outside the interaction range
is almost independent of time in our quenched calculation of the I=2
two-pion scattering with almost zero momentum. In order to discuss
the time independence, we present a relation between the two-pion
scattering amplitude and the surface term of the BS wave function
at the boundary of the interaction range. Using the relation and some
assumptions, we show that the ratio is independent of time if
the BS wave function in early time is given by some scattering states
with almost zero momentum.
Primary authors
Takeshi Yamazaki
Dr
Yusuke Namekawa
(KEK)
