Modeling Heavy Ion Collisions in AdS/CFT
| dc.creator | Albacete, Javier L. | |
| dc.creator | Kovchegov, Yuri V. | |
| dc.creator | Taliotis, Anastasios | |
| dc.date | 2008-05-19 | |
| dc.date | 2008-09-09 | |
| dc.date.accessioned | 2026-07-07T11:50:55Z | |
| dc.date.available | 2026-07-07T11:50:55Z | |
| dc.description | We construct a model of high energy heavy ion collisions as two ultrarelativistic shock waves colliding in AdS_5. We point out that shock waves corresponding to physical energy-momentum tensors of the nuclei completely stop almost immediately after the collision in AdS_5, which, on the field theory side, corresponds to complete nuclear stopping due to strong coupling effects, likely leading to Landau hydrodynamics. Since in real-life heavy ion collisions the large Bjorken x part of nuclear wave functions continues to move along the light cone trajectories of the incoming nuclei leaving the small-x partons behind, we conclude that a pure large coupling approach is not likely to adequately model nuclear collisions. We show that to account for small-coupling effects one can model the colliding nuclei by two (unphysical) ultrarelativistic shock waves with zero net energy each (but with non-zero energy density). We use this model to study the energy density of the strongly-coupled matter created immediately after the collision. We argue that expansion of the energy density in the powers of proper time squared corresponds on the gravity side to a perturbative expansion of the metric in graviton exchanges. Using such expansion we reproduce our earlier result that the energy density of produced matter at mid-rapidity starts out as a constant (of time) in heavy ion collisions at large coupling. | |
| dc.description | 34 pages, 3 figures. One sentence modified and Appendix B revised | |
| dc.identifier | https://arxiv.org/abs/0805.2927 | |
| dc.identifier | http://arxiv.org/abs/0805.2927 | |
| dc.identifier | JHEP0807:100,2008 | |
| dc.identifier | doi:10.1088/1126-6708/2008/07/100 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203724 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | Modeling Heavy Ion Collisions in AdS/CFT | |
| dc.type | text |