% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @INPROCEEDINGS{Horsley:872905, author = {Horsley, Roger and Nakamura, Yoshifumi and Perlt, Holger and Pleiter, D. and Rakow, P. E. L. and Schierholz, Gerrit and Schiller, Arwed and Stuben, Hinnerk and Young, Ross D. and Zanotti, J. M.}, title = {{T}he strange quark contribution to the spin of the nucleon}, publisher = {Sissa Medialab Trieste, Italy}, reportid = {FZJ-2020-00370}, pages = {119}, year = {2019}, comment = {Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018) - Sissa Medialab Trieste, Italy, 2019. - ISBN - doi:10.22323/1.334.0119}, booktitle = {Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018) - Sissa Medialab Trieste, Italy, 2019. - ISBN - doi:10.22323/1.334.0119}, abstract = {Quark line disconnected matrix elements of an operator, such as the axial current, are difficult to compute on the lattice. The standard method uses a stochastic estimator of the operator, which is generally very noisy. We discuss and develop further our alternative approach using the Feynman-Hellmann theorem which involves only evaluating two-point correlation functions. This is applied to computing the contribution of the quark spin to the nucleon and in particular for the strange quark. In this process we also pay particular attention to the development of an SU(3) flavour breaking expansion for singlet operators.}, month = {Jul}, date = {2018-07-22}, organization = {The 36th Annual International Symposium on Lattice Field Theory, Michigan State University (East Lansing), 22 Jul 2018 - 28 Jul 2018}, cin = {JSC}, cid = {I:(DE-Juel1)JSC-20090406}, pnm = {513 - Supercomputer Facility (POF3-513)}, pid = {G:(DE-HGF)POF3-513}, typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7}, doi = {10.22323/1.334.0119}, url = {https://juser.fz-juelich.de/record/872905}, }