Inverse magnetic/shear catalysis
It is well known that very large magnetic fields are generated when the Quark–Gluon Plasma is formed during peripheral heavy-ion collisions. Lattice, holographic, and other studies strongly suggest that these fields may, for observationally relevant field values, induce “inverse magnetic catalysis”,...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-05-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321316000717 |
| _version_ | 1819020745660956672 |
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| author | Brett McInnes |
| author_facet | Brett McInnes |
| author_sort | Brett McInnes |
| collection | DOAJ |
| description | It is well known that very large magnetic fields are generated when the Quark–Gluon Plasma is formed during peripheral heavy-ion collisions. Lattice, holographic, and other studies strongly suggest that these fields may, for observationally relevant field values, induce “inverse magnetic catalysis”, signalled by a lowering of the critical temperature for the chiral/deconfinement transition. The theoretical basis of this effect has recently attracted much attention; yet so far these investigations have not included another, equally dramatic consequence of the peripheral collision geometry: the QGP acquires a large angular momentum vector, parallel to the magnetic field. Here we use holographic techniques to argue that the angular momentum can also, independently, have an effect on transition temperatures, and we obtain a rough estimate of the relative effects of the presence of both a magnetic field and an angular momentum density. We find that the shearing angular momentum reinforces the effect of the magnetic field at low values of the baryonic chemical potential, but that it can actually decrease that effect at high chemical potentials. |
| first_indexed | 2024-12-21T03:56:06Z |
| format | Article |
| id | doaj.art-91fe461eb4ac4b7c9a080eec4d5d62f1 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 1873-1562 |
| language | English |
| last_indexed | 2024-12-21T03:56:06Z |
| publishDate | 2016-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-91fe461eb4ac4b7c9a080eec4d5d62f12022-12-21T19:16:50ZengElsevierNuclear Physics B0550-32131873-15622016-05-01906C405910.1016/j.nuclphysb.2016.02.027Inverse magnetic/shear catalysisBrett McInnesIt is well known that very large magnetic fields are generated when the Quark–Gluon Plasma is formed during peripheral heavy-ion collisions. Lattice, holographic, and other studies strongly suggest that these fields may, for observationally relevant field values, induce “inverse magnetic catalysis”, signalled by a lowering of the critical temperature for the chiral/deconfinement transition. The theoretical basis of this effect has recently attracted much attention; yet so far these investigations have not included another, equally dramatic consequence of the peripheral collision geometry: the QGP acquires a large angular momentum vector, parallel to the magnetic field. Here we use holographic techniques to argue that the angular momentum can also, independently, have an effect on transition temperatures, and we obtain a rough estimate of the relative effects of the presence of both a magnetic field and an angular momentum density. We find that the shearing angular momentum reinforces the effect of the magnetic field at low values of the baryonic chemical potential, but that it can actually decrease that effect at high chemical potentials.http://www.sciencedirect.com/science/article/pii/S0550321316000717 |
| spellingShingle | Brett McInnes Inverse magnetic/shear catalysis Nuclear Physics B |
| title | Inverse magnetic/shear catalysis |
| title_full | Inverse magnetic/shear catalysis |
| title_fullStr | Inverse magnetic/shear catalysis |
| title_full_unstemmed | Inverse magnetic/shear catalysis |
| title_short | Inverse magnetic/shear catalysis |
| title_sort | inverse magnetic shear catalysis |
| url | http://www.sciencedirect.com/science/article/pii/S0550321316000717 |
| work_keys_str_mv | AT brettmcinnes inversemagneticshearcatalysis |