On the existence of a holographic description of the LHC quark–gluon plasmas
Peripheral collisions of heavy ions can give rise to extremely intense magnetic fields. It has been suggested that these fields might invalidate the holographic description of the corresponding quark–gluon plasmas, assuming that these can be modelled by strongly coupled field theories. In the case o...
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doaj-118e600c35134a0ea1ebd718c2f45d592020-11-24T23:59:50ZengElsevierNuclear Physics B0550-32131873-15622017-04-01917C8610410.1016/j.nuclphysb.2017.01.028On the existence of a holographic description of the LHC quark–gluon plasmasBrett McInnes0Yen Chin Ong1Department of Mathematics, National University of Singapore, Singapore 119076, SingaporeCenter for Astronomy and Astrophysics, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, ChinaPeripheral collisions of heavy ions can give rise to extremely intense magnetic fields. It has been suggested that these fields might invalidate the holographic description of the corresponding quark–gluon plasmas, assuming that these can be modelled by strongly coupled field theories. In the case of the plasmas produced in collisions at the RHIC facility (including in the beam energy scans), it is known how to deal with this problem: one has to take into account the large angular momenta generated in these plasmas, and the effects of the baryonic chemical potential. But this does not work for the plasmas produced in peripheral collisions at the LHC. However, these results neglect some (less significant) aspects of bulk physics; could it be that the problem is resolved by taking into account these lower-order effects? Here we use a bulk dilatonic field (fully compatible with boundary data, as well as with the asymptotically AdS character of the bulk geometry) as a model of these effects, and show that this is unlikely to be the solution. Thus, the existence of a consistent holographic description of the most extreme LHC plasmas remains open to question.http://www.sciencedirect.com/science/article/pii/S0550321317300421 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Brett McInnes Yen Chin Ong |
spellingShingle |
Brett McInnes Yen Chin Ong On the existence of a holographic description of the LHC quark–gluon plasmas Nuclear Physics B |
author_facet |
Brett McInnes Yen Chin Ong |
author_sort |
Brett McInnes |
title |
On the existence of a holographic description of the LHC quark–gluon plasmas |
title_short |
On the existence of a holographic description of the LHC quark–gluon plasmas |
title_full |
On the existence of a holographic description of the LHC quark–gluon plasmas |
title_fullStr |
On the existence of a holographic description of the LHC quark–gluon plasmas |
title_full_unstemmed |
On the existence of a holographic description of the LHC quark–gluon plasmas |
title_sort |
on the existence of a holographic description of the lhc quark–gluon plasmas |
publisher |
Elsevier |
series |
Nuclear Physics B |
issn |
0550-3213 1873-1562 |
publishDate |
2017-04-01 |
description |
Peripheral collisions of heavy ions can give rise to extremely intense magnetic fields. It has been suggested that these fields might invalidate the holographic description of the corresponding quark–gluon plasmas, assuming that these can be modelled by strongly coupled field theories. In the case of the plasmas produced in collisions at the RHIC facility (including in the beam energy scans), it is known how to deal with this problem: one has to take into account the large angular momenta generated in these plasmas, and the effects of the baryonic chemical potential. But this does not work for the plasmas produced in peripheral collisions at the LHC. However, these results neglect some (less significant) aspects of bulk physics; could it be that the problem is resolved by taking into account these lower-order effects? Here we use a bulk dilatonic field (fully compatible with boundary data, as well as with the asymptotically AdS character of the bulk geometry) as a model of these effects, and show that this is unlikely to be the solution. Thus, the existence of a consistent holographic description of the most extreme LHC plasmas remains open to question. |
url |
http://www.sciencedirect.com/science/article/pii/S0550321317300421 |
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