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Article
Report number arXiv:1805.05213
Title Hybrid Fluid Models from Mutual Effective Metric Couplings
Author(s) Kurkela, Aleksi (CERN ; Stavanger U.) ; Mukhopadhyay, Ayan (Vienna, Tech. U. ; Indian Inst. Tech., Madras) ; Preis, Florian (Vienna, Tech. U.) ; Rebhan, Anton (Vienna, Tech. U.) ; Soloviev, Alexander (Vienna, Tech. U.)
Publication 2018-08-13
Imprint 2018-05-14
Number of pages 55
Note 1+54 pages, 15 figures; v3: minor additions, synced with JHEP version
In: JHEP 08 (2018) 054
DOI 10.1007/JHEP08(2018)054
Subject category nucl-th ; Nuclear Physics - Theory ; hep-th ; Particle Physics - Theory ; hep-ph ; Particle Physics - Phenomenology
Abstract Motivated by a semi-holographic approach to the dynamics of quark-gluon plasma which combines holographic and perturbative descriptions of a strongly coupled infrared and a more weakly coupled ultraviolet sector, we construct a hybrid two-fluid model where interactions between its two sectors are encoded by their effective metric backgrounds, which are determined mutually by their energy-momentum tensors. We derive the most general consistent ultralocal interactions such that the full system has a total conserved energy-momentum tensor in flat Minkowski space and study its consequences in and near thermal equilibrium by working out its phase structure and its hydrodynamic modes.
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