Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics
We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton, and [superscript 3]He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to m[subscript π] ~ 800 MeV, reveal that the st...
| Principais autores: | , , , , , , , , |
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| Formato: | Artigo |
| Idioma: | English |
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American Physical Society
2014
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| Acesso em linha: | http://hdl.handle.net/1721.1/92435 https://orcid.org/0000-0002-0400-8363 |
| _version_ | 1826204950272671744 |
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| author | Beane, S. R. Chang, E. Cohen, S. Lin, H.-W. Orginos, Kostas Savage, M. J. Tiburzi, B. C. Detmold, William Parreno, A. |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Beane, S. R. Chang, E. Cohen, S. Lin, H.-W. Orginos, Kostas Savage, M. J. Tiburzi, B. C. Detmold, William Parreno, A. |
| author_sort | Beane, S. R. |
| collection | MIT |
| description | We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton, and [superscript 3]He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to m[subscript π] ~ 800 MeV, reveal that the structure of these nuclei at unphysically heavy quark masses closely resembles that at the physical quark masses. In particular, we find that the magnetic moment of [superscript 3]He differs only slightly from that of a free neutron, as is the case in nature, indicating that the shell-model configuration of two spin-paired protons and a valence neutron captures its dominant structure. Similarly a shell-model-like moment is found for the triton, μ3[subscript H] ~ μ[subscript p]. The deuteron magnetic moment is found to be equal to the nucleon isoscalar moment within the uncertainties of the calculations. Furthermore, deviations from the Schmidt limits are also found to be similar to those in nature for these nuclei. These findings suggest that at least some nuclei at these unphysical quark masses are describable by a phenomenological nuclear shell model. |
| first_indexed | 2024-09-23T13:03:55Z |
| format | Article |
| id | mit-1721.1/92435 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:03:55Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/924352022-09-28T11:49:30Z Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics Beane, S. R. Chang, E. Cohen, S. Lin, H.-W. Orginos, Kostas Savage, M. J. Tiburzi, B. C. Detmold, William Parreno, A. Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Detmold, William We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton, and [superscript 3]He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to m[subscript π] ~ 800 MeV, reveal that the structure of these nuclei at unphysically heavy quark masses closely resembles that at the physical quark masses. In particular, we find that the magnetic moment of [superscript 3]He differs only slightly from that of a free neutron, as is the case in nature, indicating that the shell-model configuration of two spin-paired protons and a valence neutron captures its dominant structure. Similarly a shell-model-like moment is found for the triton, μ3[subscript H] ~ μ[subscript p]. The deuteron magnetic moment is found to be equal to the nucleon isoscalar moment within the uncertainties of the calculations. Furthermore, deviations from the Schmidt limits are also found to be similar to those in nature for these nuclei. These findings suggest that at least some nuclei at these unphysical quark masses are describable by a phenomenological nuclear shell model. United States. Dept. of Energy (Early Career Research Award DE-SC0010495) Solomon Buchsbaum AT&T Research Fund 2014-12-22T16:40:15Z 2014-12-22T16:40:15Z 2014-12 2014-09 2014-12-16T23:00:02Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/92435 Beane, S. R., et al. "Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics." Phys. Rev. Lett. 113, 252001 (December 2014). © 2014 American Physical Society https://orcid.org/0000-0002-0400-8363 en http://dx.doi.org/10.1103/PhysRevLett.113.252001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Beane, S. R. Chang, E. Cohen, S. Lin, H.-W. Orginos, Kostas Savage, M. J. Tiburzi, B. C. Detmold, William Parreno, A. Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title | Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title_full | Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title_fullStr | Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title_full_unstemmed | Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title_short | Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics |
| title_sort | magnetic moments of light nuclei from lattice quantum chromodynamics |
| url | http://hdl.handle.net/1721.1/92435 https://orcid.org/0000-0002-0400-8363 |
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