2021
DOI: 10.1103/physrevd.104.126012
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Violation of energy conditions and entropy production in holographic Bjorken flow

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Cited by 13 publications
(45 citation statements)
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“…Using the characteristic formulation of general relativity, we obtain numerical solutions to the Einstein equations which corresponds to the out-of-equilibrium evolution of data initialized shortly after the "collision" of two heavy ions. With our evolutions we clarify previous results on entropy production in holographic models [56] and confirm previous numerical results about the hydrodynamic attractor of N = 4 SYM theory [57,58]. Following this, we compute derivatives of the spatial diagonal components of the energy-momentum tensor of the fluid with respect to its energy density.…”
Section: Introductionsupporting
confidence: 87%
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“…Using the characteristic formulation of general relativity, we obtain numerical solutions to the Einstein equations which corresponds to the out-of-equilibrium evolution of data initialized shortly after the "collision" of two heavy ions. With our evolutions we clarify previous results on entropy production in holographic models [56] and confirm previous numerical results about the hydrodynamic attractor of N = 4 SYM theory [57,58]. Following this, we compute derivatives of the spatial diagonal components of the energy-momentum tensor of the fluid with respect to its energy density.…”
Section: Introductionsupporting
confidence: 87%
“…The initial data required to begin the evolution consists an initial time v 0 , an initial value of the asymptotic coefficient a 4 (dual to the energy density), an initial value for the radial shift diffeomorphism λ as well as a profile for B(z, v 0 ) on the initial time slice (where we have already changed variables, r = 1/z, placing the boundary at the finite location z = 0). For the initial profile we follow previous authors [56,60,93] and choose to parameterize our solutions as deviations away from a vacuum AdS solution to the Einstein equations.…”
Section: Initial Conditionsmentioning
confidence: 99%
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“…3.1. For this reason, it is interesting to note the holographic Bjorken flow can evolve to violate the dominant and weak energy conditions [110], even with initial conditions that satisfy these bounds. For conformal Bjorken flow, the weak energy condition was given in the first holographic study of Bjorken flow [111]…”
Section: Violation Of Energy Conditionsmentioning
confidence: 99%
“…Kinetic theory satisfies the energy conditions: the weak energy condition implies that the energy density is non-negative and the dominant energy condition is the requirement that matter does not exceed the speed of light [112]. These violations could possibly indicate that this prehydrodynamic regime would lie outside of the domain of validity of kinetic theory descriptions [110].…”
Section: Violation Of Energy Conditionsmentioning
confidence: 99%