Effect of external magnetic fields on nucleon mass in a hot and dense medium: inverse magnetic catalysis in the Walecka model

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dc.contributor.author Mukherjee, Arghya
dc.contributor.author Ghosh, Snigdha
dc.contributor.author Mandal, Mahatsab
dc.contributor.author Sarkar, Sourav
dc.contributor.author Roy, Pradip
dc.date.accessioned 2018-10-20T08:05:51Z
dc.date.available 2018-10-20T08:05:51Z
dc.date.issued 2018-09
dc.identifier.citation Mukherjee, Arghya; Ghosh, Snigdha; Mandal, Mahatsab; Sarkar, Sourav and Roy, Pradip, "Effect of external magnetic fields on nucleon mass in a hot and dense medium: inverse magnetic catalysis in the Walecka model", Physical Review D, DOI: 10.1103/PhysRevD.98.056024, vol. 98, no. 5, Sep. 2018. en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri https://doi.org/10.1103/PhysRevD.98.056024
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3952
dc.description.abstract The vacuum to nuclear matter phase transition is studied in the presence of a constant external background magnetic field with the mean-field approximation in the Walecka model. The anomalous nucleon magnetic moment is taken into account using the modified �weak� field expansion of the fermion propagator with nontrivial correction terms for both charged and neutral particles. The effect of the nucleon magnetic moment is found to favor the magnetic catalysis effect at zero temperature and zero baryon density. However, extending the study to finite temperatures, it is observed that the anomalous nuclear magnetic moment plays a crucial role in characterizing the qualitative behavior of the vacuum to nuclear matter phase transition even in the case of weak external magnetic fields. The critical temperature corresponding to the vacuum to nuclear medium phase transition is observed to decrease with the external magnetic field, which can be identified as inverse magnetic catalysis in the Walecka model, whereas the opposite behavior is obtained in the case of a vanishing magnetic moment, indicating magnetic catalysis.
dc.description.statementofresponsibility by Arghya Mukherjee, Snigdha Ghosh, Mahatsab Mandal, Sourav Sarkar and Pradip Roy
dc.format.extent vol. 98, no. 5
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Nuclear structure and decays en_US
dc.subject Nuclear matter en_US
dc.subject Nuclear structure and decays en_US
dc.subject Nucleon-nucleon interactions en_US
dc.subject Relativistic heavy-ion collisions en_US
dc.title Effect of external magnetic fields on nucleon mass in a hot and dense medium: inverse magnetic catalysis in the Walecka model en_US
dc.type Article en_US
dc.relation.journal Physical Review D


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