Galilean invariance restoration on the lattice
Yükleniyor...
Dosyalar
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Physical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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, S-1(0) and S-3(1), we present the neutron-proton scattering phase shifts in moving frames calculated using both Luscher'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. 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.
Açıklama
WOS:000473022100001
Anahtar Kelimeler
Kaynak
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
99
Sayı
6
Künye
Li, N., Elhatisari, S., Epelbaum, E., Lee, D., Lu, B., Meißner, U.-G. (2019). Galilean invariance restoration on the lattice. Physical Review C, 99, 6.
