Phase shifts in $I=2$ ${\pi}{\pi}$-scattering from two lattice approaches - INSPIRE

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Phase shifts in $I=2$ ${\pi}{\pi}$ -scattering from two lattice approaches

Thorsten Kurth
(
- Bergische U., Wuppertal (main)
)
,
Noriyoshi Ishii
(
- Tsukuba U., CCS
)
,
Takumi Doi
(
- Nishina Ctr., RIKEN
)
,
Sinya Aoki
(
- Kyoto U., Yukawa Inst., Kyoto and
- Tsukuba U., CCS
)
,
Tetsuo Hatsuda
(
- Nishina Ctr., RIKEN and
- Tokyo U., IPMU
)

2014

7 pages

Part of Proceedings, 31st International Symposium on Lattice Field Theory (Lattice 2013) : Mainz, Germany, July 29-August 3, 2013, 224

Published in:

PoS LATTICE2013 (2014) 224

Contribution to:

- Lattice 2013
, 224

Published: 2014

DOI:

10.22323/1.187.0224

reference search1 citation

Citations per year

Abstract:

We compare two approaches used for computing scattering phase shifts and other low-energy observables in lattice QCD: the finite size method invented by Lüscher as well as the recently introduced HAL QCD method which is based on the extraction of multi body potentials from Nambu-Bethe-Salpeter wave functions. We perform quenched QCD simulations featuring lattices with spatial extents of 1 : 8 fm to 5 : 5 fm, a lattice spacing of 0 : 115 fm and a pion mass of 940 MeV. We compute phase shifts and scattering length of pp scattering in the I = 2 channel for either method and compare the results.

phase shift
lattice

References(14)

Figures(0)

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