Composite vector particles in external electromagnetic fields
Lattice quantum chromodynamics (QCD) studies of electromagnetic properties of hadrons and light nuclei, such as magnetic moments and polarizabilities, have proven successful with the use of background field methods. With an implementation of nonuniform background electromagnetic fields, properties s...
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| Format: | Article |
| Language: | English |
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American Physical Society
2016
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| Online Access: | http://hdl.handle.net/1721.1/101063 https://orcid.org/0000-0002-1110-3633 https://orcid.org/0000-0002-0400-8363 |
| _version_ | 1826201779624214528 |
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| author | Davoudi, Zohreh Detmold, William |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Davoudi, Zohreh Detmold, William |
| author_sort | Davoudi, Zohreh |
| collection | MIT |
| description | Lattice quantum chromodynamics (QCD) studies of electromagnetic properties of hadrons and light nuclei, such as magnetic moments and polarizabilities, have proven successful with the use of background field methods. With an implementation of nonuniform background electromagnetic fields, properties such as charge radii and higher electromagnetic multipole moments (for states of higher spin) can additionally be obtained. This can be achieved by matching lattice QCD calculations to a corresponding low-energy effective theory that describes the static and quasistatic responses of hadrons and nuclei to weak external fields. With particular interest in the case of vector mesons and spin-1 nuclei such as the deuteron, we present an effective field theory of spin-1 particles coupled to external electromagnetic fields. To constrain the charge radius and the electric quadrupole moment of the composite spin-1 field, the single-particle Green’s functions in a linearly varying electric field in space are obtained within the effective theory, providing explicit expressions that can be used to match directly onto lattice QCD correlation functions. The viability of an extraction of the charge radius and the electric quadrupole moment of the deuteron from the upcoming lattice QCD calculations of this nucleus is discussed. |
| first_indexed | 2024-09-23T11:57:05Z |
| format | Article |
| id | mit-1721.1/101063 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:57:05Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1010632022-10-01T07:12:07Z Composite vector particles in external electromagnetic fields Davoudi, Zohreh Detmold, William Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Davoudi, Zohreh Detmold, William Lattice quantum chromodynamics (QCD) studies of electromagnetic properties of hadrons and light nuclei, such as magnetic moments and polarizabilities, have proven successful with the use of background field methods. With an implementation of nonuniform background electromagnetic fields, properties such as charge radii and higher electromagnetic multipole moments (for states of higher spin) can additionally be obtained. This can be achieved by matching lattice QCD calculations to a corresponding low-energy effective theory that describes the static and quasistatic responses of hadrons and nuclei to weak external fields. With particular interest in the case of vector mesons and spin-1 nuclei such as the deuteron, we present an effective field theory of spin-1 particles coupled to external electromagnetic fields. To constrain the charge radius and the electric quadrupole moment of the composite spin-1 field, the single-particle Green’s functions in a linearly varying electric field in space are obtained within the effective theory, providing explicit expressions that can be used to match directly onto lattice QCD correlation functions. The viability of an extraction of the charge radius and the electric quadrupole moment of the deuteron from the upcoming lattice QCD calculations of this nucleus is discussed. United States. Dept. of Energy (Grant DE-SC0011090) United States. Dept. of Energy (Early Career Research Award DE-SC0010495) National Science Foundation (U.S.) (Grant NSF PHY11-25915) Kavli Institute for Astrophysics and Space Research 2016-02-02T13:41:44Z 2016-02-02T13:41:44Z 2016-01 2015-10 2016-01-25T23:00:12Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/101063 Davoudi, Zohreh, and William Detmold. "Composite vector particles in external electromagnetic fields." Phys. Rev. D 93, 014509 (January 2016). © 2016 American Physical Society https://orcid.org/0000-0002-1110-3633 https://orcid.org/0000-0002-0400-8363 en http://dx.doi.org/10.1103/PhysRevD.93.014509 Physical Review D 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 | Davoudi, Zohreh Detmold, William Composite vector particles in external electromagnetic fields |
| title | Composite vector particles in external electromagnetic fields |
| title_full | Composite vector particles in external electromagnetic fields |
| title_fullStr | Composite vector particles in external electromagnetic fields |
| title_full_unstemmed | Composite vector particles in external electromagnetic fields |
| title_short | Composite vector particles in external electromagnetic fields |
| title_sort | composite vector particles in external electromagnetic fields |
| url | http://hdl.handle.net/1721.1/101063 https://orcid.org/0000-0002-1110-3633 https://orcid.org/0000-0002-0400-8363 |
| work_keys_str_mv | AT davoudizohreh compositevectorparticlesinexternalelectromagneticfields AT detmoldwilliam compositevectorparticlesinexternalelectromagneticfields |