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Title: Galilean invariance restoration on the lattice

Journal Article · · Physical Review. C
ORCiD logo [1];  [2];  [3];  [4];  [1];  [5]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Univ. Bonn (Germany); Karamanoglu Mehmetbey Univ. (Turkey)
  3. Ruhr Univ. Bochum (Germany)
  4. Michigan State Univ., East Lansing, MI (United States); North Carolina State Univ., Raleigh, NC (United States)
  5. Univ. Bonn (Germany); Forschungszentrum Jülich (Germany); Tbilisi State Univ. (Georgia)

We consider the breaking of Galilean invariance due to different lattice cutoff effects in moving frames and a nonlocal smearing parameter, which is used in the construction of the nuclear lattice interaction. The dispersion relation and neutron-proton scattering phase shifts are used to investigate the Galilean invariance breaking effects and ways to restore it. For S-wave channels, 1S0 and 3S1, we present the neutron-proton scattering phase shifts in moving frames calculated using both Lüscher's formula and the spherical wall method, as well as the dispersion relation. For the P and D waves, we present the neutron-proton scattering phase shifts in moving frames calculated using the spherical wall method. Furthermore, we find that the Galilean invariance breaking effects stemming from the lattice artifacts partially cancel those caused by the nonlocal smearing parameter. Due to this cancellation, the Galilean invariance breaking effect is small, and the Galilean invariance can be restored by introducing Galilean invariance restoration operators.

Research Organization:
Michigan State Univ., East Lansing, MI (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0018638; AC52-06NA25396
OSTI ID:
1613010
Alternate ID(s):
OSTI ID: 1546310
Journal Information:
Physical Review. C, Vol. 99, Issue 6; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Scattering phases for meson and baryon resonances on general moving-frame lattices text January 2012
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Cited By (2)

Scattering phase shifts and mixing angles for an arbitrary number of coupled channels on the lattice journal December 2019
Renormalization of a Contact Interaction on a Lattice preprint January 2019

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