Shearing Black Holes and Scans of the Quark Matter Phase Diagram

Abstract

Future facilities such as FAIR and NICA are expected to produce collisions of heavy ions generating quark-gluon plasmas with large values of the quark chemical potential; peripheral collisions in such experiments will also lead to large values of the angular momentum density, associated with the internal shearing motion of the plasma. It is well known that shearing motions in fluids can lead to instabilities which cause a transition from laminar to turbulent flow, and such instabilities in the QGP have recently attracted some attention. We set up a holographic model of this situation by constructing a gravitational dual system exhibiting an instability which is indeed triggered by shearing angular momentum in the bulk. We show that holography indicates that the transition to an unstable fluid happens more quickly as one scans across the quark matter phase diagram towards large values of the chemical potential. This may have negative consequences for the observability of quark polarization effects.

20 pages, 2 figures, version to appear in Classical and Quantum Gravity

References in corpus (21)

• Angular momentum conservation in heavy ion collisions at very high energy
• Scale for the Phase Diagram of Quantum Chromodynamics
• Chiral anomaly and local polarization effect from quantum kinetic approach
• The QCD phase diagram at nonzero quark density
• Global quark polarization in non-central $A+A$ collisions
• A Rotating Holographic Superconductor
• Helicity separation in Heavy-Ion Collisions
• Charging axisymmetric space-times with cosmological constant
• Holographic QCD: Past, Present, and Future
• Comparison of results from a 2+1D relativistic viscous hydrodynamic model to elliptic and hexadecapole flow of charged hadrons measured in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV
• Photon polarization as a probe for quark-gluon plasma dynamics
• Towards a holographic realization of the quarkyonic phase
• Highlights from STAR
• Fragmentation of Spinning Branes
• From black strings to black holes: nuttier and squashed AdS${}_5$ solutions
• Metastability of R-Charged Black Holes
• Warped AdS_5 Black Holes and Dual CFTs
• Fragile Black Holes
• Non-trivial, static, geodesically complete space-times with a negative cosmological constant II. $n\ge 5$
• Universality of the Holographic Angular Momentum Cutoff
• QCD phase diagram: overview of recent lattice results

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• Charge Loss (or the Lack Thereof) for AdS Black Holes
• Holography of Little Inflation
• Field Theories Without a Holographic Dual