Disconnected quark loop contributions to nucleon observables in lattice QCD

被引：61

作者：

Abdel-Rehim, A. ^{[1
]}

Alexandrou, C. ^{[1
,2
]}

Constantinou, M. ^{[1
]}

Drach, V. ^{[3
]}

Hadjiyiannakou, K. ^{[2
]}

Jansen, K. ^{[2
,3
]}

Koutsou, G. ^{[1
]}

Vaquero, A. ^{[1
]}

机构：

[1] Cyprus Inst, Computat Based Sci & Technol Res Ctr, CY-2121 Nicosia, Cyprus

[2] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[3] DESY, D-15738 Zeuthen, Germany

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 03期

关键词：

MONTE-CARLO;

D O I：

10.1103/PhysRevD.89.034501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：14

共 35 条

[1] Nucleon form factors and moments of generalized parton distributions using Nf=2+1+1 twisted mass fermions
Alexandrou, C.
Constantinou, M.
Dinter, S.
Drach, V.
Jansen, K.
Kallidonis, C.
Koutsou, G.
[J]. PHYSICAL REVIEW D, 2013, 88 (01):
[2] Renormalization constants of local operators for Wilson type improved fermions
Alexandrou, C.
Constantinou, M.
Korzec, T.
Panagopouos, H.
Stylianou, F.
[J]. PHYSICAL REVIEW D, 2012, 86 (01):
[3] Evaluation of fermion loops applied to the calculation of the η′ mass and the nucleon scalar and electromagnetic form factors
Alexandrou, C.
Hadjiyiannakou, K.
Koutsou, G.
O'Cais, A.
Strelchenko, A.
[J]. COMPUTER PHYSICS COMMUNICATIONS, 2012, 183 (06) : 1215 - 1224
[4] Renormalization constants for 2-twist operators in twisted mass QCD
Alexandrou, C.
Constantinou, M.
Korzec, T.
Panagopoulos, H.
Stylianou, F.
[J]. PHYSICAL REVIEW D, 2011, 83 (01):
[5] Alexandrou C., ARXIV13092256
[6] Hadron structure in lattice QCD
Alexandrou, Constantia
[J]. PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2012, 67 (02) : 101 - 116
[7] Effective noise reduction techniques for disconnected loops in Lattice QCD
Bali, Gunnar S.
Collins, Sara
Schaefer, Andreas
[J]. COMPUTER PHYSICS COMMUNICATIONS, 2010, 181 (09) : 1570 - 1583
[8] Light hadrons from lattice QCD with light (u, d), strange and charm dynamical quarks
Baron, R.
Boucaud, Ph
Carbonell, J.
Deuzeman, A.
Drach, V.
Farchioni, F.
Gimenez, V.
Herdoiza, G.
Jansen, K.
McNeile, C.
Michael, C.
Montvay, I.
Palao, D.
Pallante, E.
Pene, O.
Urbach, C.
Wagner, M.
Wenger, U.
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2010, (06):
[9] MONTE-CARLO METHODS FOR ESTIMATING LINEAR-COMBINATIONS OF INVERSE MATRIX ENTRIES IN LATTICE QCD
BERNARDSON, S
MCCARTY, P
THRON, C
[J]. COMPUTER PHYSICS COMMUNICATIONS, 1994, 78 (03) : 256 - 264
[10] HYBRID MONTE-CARLO AND QUANTUM CHROMODYNAMICS
BITAR, K
KENNEDY, AD
HORSLEY, R
MEYER, S
ROSSI, P
[J]. NUCLEAR PHYSICS B, 1989, 313 (02) : 377 - 392

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