This title appears in the Scientific Report :
2015
Please use the identifier:
http://hdl.handle.net/2128/10195 in citations.
Initial nucleon structure results with chiral quarks at the physical point
Initial nucleon structure results with chiral quarks at the physical point
We report initial nucleon structure results computed on lattices with 2+1 dynamical M\'obius domain wall fermions at the physical point generated by the RBC and UKQCD collaborations. At this stage, we evaluate only connected quark contributions. In particular, we discuss the nucleon vector and...
Saved in:
Personal Name(s): | Syritsyn, S. (Corresponding Author) |
---|---|
Blum, T. / Engelhardt, M. / Green, J. / Izubuchi, T. / Jung, C. / Krieg, S. / Lin, M. / Meinel, S. / Negele, J. / Ohta, S. / Pochinsky, A. / Shintani, E. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | LATTICE2014 (2015) S. 134 |
Imprint: |
Trieste
SISSA
2015
|
Physical Description: |
134 |
Conference: | The 32nd International Symposium on Lattice Field Theory, Columbia University, New York, NY (USA), 2014-06-23 - 2014-06-28 |
Document Type: |
Contribution to a conference proceedings Internal Report |
Research Program: |
Computational Science and Mathematical Methods |
Series Title: |
Proceedings of Science
|
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
We report initial nucleon structure results computed on lattices with 2+1 dynamical M\'obius domain wall fermions at the physical point generated by the RBC and UKQCD collaborations. At this stage, we evaluate only connected quark contributions. In particular, we discuss the nucleon vector and axial-vector form factors, nucleon axial charge and the isovector quark momentum fraction. From currently available statistics, we estimate the stochastic accuracy of the determination of $g_A$ and $<x>_{u-d}$ to be around 10%, and we expect to reduce that to 5% within the next year. To reduce the computational cost of our calculations, we extensively use acceleration techniques such as low-eigenmode deflation and all-mode-averaging (AMA). We present a method for choosing optimal AMA parameters. |