Colliding shock waves and hydrodynamics in small systems

Abstract

Using numerical holography, we study the collision of a planar sheet of energy with a bounded localized distribution of energy. The collision, which mimics proton-nucleus collisions, produces a localized lump of debris with transverse size $R\sim 1/T_{\mathrm{eff}}$ with $T_{\mathrm{eff}}$ the effective temperature, and has large gradients and large transverse flow. Nevertheless, the postcollision evolution is well described by viscous hydrodynamics. Our results bolster the notion that debris produced in proton-nucleus collisions may be modeled using hydrodynamics.

6 pages, 3 figures. Typos corrected, minor improvements, published version

References in corpus (8)

• Nonlinear Fluid Dynamics from Gravity
• Relativistic viscous hydrodynamics, conformal invariance, and holography
• Holography and colliding gravitational shock waves in asymptotically AdS_5 spacetime
• Correlations from hydrodynamic flow in p-Pb collisions
• Entropy production in collisions of gravitational shock waves and of heavy ions
• Azimuthal asymmetries and the emergence of "collectivity" from multi-particle correlations in high-energy pA collisions
• Modeling Heavy Ion Collisions in AdS/CFT
• Simulation of Black Hole Collisions in Asymptotically AdS Spacetimes

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