Computing the magnetic field response of the proton

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hdl_131537.pdf (508.63 KB)

Date

2020

Authors

Bignell, R.
Kamleh, W.
Leinweber, D.

Editors

Doglioni, C.
Kim, D.
Stewart, G.A.
Silvestris, L.
Jackson, P.
Kamleh, W.

Advisors

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Conference paper

Citation

EPJ Web of Conferences, 2020 / Doglioni, C., Kim, D., Stewart, G.A., Silvestris, L., Jackson, P., Kamleh, W. (ed./s), vol.245, pp.06033-1-06033-9

Statement of Responsibility

Ryan Bignell, Waseem Kamleh and Derek Leinweber

Conference Name

24th International Conference on Computing in High Energy and Nuclear Physics (CHEP) (4 Nov 2019 - 8 Nov 2019 : Adelaide, Australia)

DOI

10.1051/epjconf/202024506033

Abstract

Background field methods offer an approach through which fundamental non-perturbative hadronic properties can be studied. Lattice QCD is the only <jats:italic>ab initio</jats:italic> method with which Quantum Chromodynamics can be studied at low energies; it involves numerically calculating expectation values in the path integral formalism. This requires substantial investment in high performance supercomputing resources. A particular challenge of lattice QCD is isolating the desired state, rather than a superposition of excited states. While extensive work has been performed which allows the ground state to be identified in lattice QCD calculations, this remains a challenging proposition for the ground state in the presence of a uniform magnetic field field. Quark level projection operators are introduced to resolve this challenge and thus allow for extraction of the magnetic polarisability.

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© The Authors, published by EDP Sciences, 2020. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Grant ID

http://purl.org/au-research/grants/arc/LE190100021
 http://purl.org/au-research/grants/arc/LE160100051
 http://purl.org/au-research/grants/arc/DP140103067
 http://purl.org/au-research/grants/arc/DP150103164
 http://purl.org/au-research/grants/arc/DP190102215
 http://purl.org/au-research/grants/arc/DP190100297

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https://www.epj-conferences.org/articles/epjconf/abs/2020/21/contents/contents.html

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Persistent link to this record

http://hdl.handle.net/2440/131537