Disconnected quark loop contributions to nucleon observables in lattice QCD
Date
2014-02-03Author
Abdel-Rehim, A
Alexandrou, C
Constantinou, M
Drach, V
Hadjiyiannakou, K
Jansen, K
Koutsou, G
Vaquero, A
Subject
hep-lat hep-lat hep-ph nucl-th
Metadata
Show full item recordAbstract
We perform a high statistics calculation of disconnected fermion loops on graphics processing units for a range of nucleon matrix elements extracted using lattice QCD. The isoscalar electromagnetic and axial vector form factors, the sigma terms and the momentum fraction and helicity are among the quantities we evaluate. We compare the disconnected contributions to the connected ones and give the physical implications on nucleon observables that probe its structure. © 2014 American Physical Society.
Description
One additional figure, typos corrected, version to appear in Phys.
Rev. D. 14 pages and 14 figures. arXiv admin note: text overlap with
arXiv:1309.2256
Collections
Publisher
American Physical Society (APS)
Journal
Physical Review D
Volume
89
Issue
3
Pagination
034501-
Publisher URL
Number
034501
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