Light vector mesons (\(\omega\), \(\rho\) and \(\phi\)) in strong magnetic fields: A QCD sum rule approach

The mass modifications of the light vector mesons (\(\omega\), \(\rho\) and \(\phi\)) are investigated in asymmetric nuclear matter in the presence of strong magnetic fields, using a QCD sum rule approach. These are computed from the medium modifications of the non-strange and strange light quark co...

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Bibliographic Details
Published in:arXiv.org 2019-07
Main Authors: Mishra, Amruta, Kumar, Ankit, Parui, Pallabi, De, Sourodeep
Format: Article
Language:English
Subjects:
Computer simulation
Condensates
Dilatons
Gluons
Magnetic fields
Magnetic moments
Mesons
Nuclear matter
Nucleons
Quantum chromodynamics
Quarks
Scale invariance
Vector mesons
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Summary:The mass modifications of the light vector mesons (\(\omega\), \(\rho\) and \(\phi\)) are investigated in asymmetric nuclear matter in the presence of strong magnetic fields, using a QCD sum rule approach. These are computed from the medium modifications of the non-strange and strange light quark condensates as well as scalar gluon condensate. The quark and gluon condensates are calculated from the medium changes of the scalar fields (non-strange and strange) and a scalar dilaton field in the magnetized nuclear matter, within a chiral SU(3) model. The scalar dilaton field within the model breaks the scale invariance of QCD and simulates the gluon condensate. The anomalous magnetic moments for the nucleons are taken into account in the present study.
ISSN:2331-8422
DOI:10.48550/arxiv.1811.12570