Thermal entropy of a quark-antiquark pair above and below deconfinement from a dynamical holographic QCD model
arXiv:1708.06995 · doi:10.1103/PhysRevD.96.126010
Abstract
We discuss the entropy carried by a quark-antiquark pair, in particular across the deconfinement transition. We therefore rely on a self-consistent solution to Einstein-Maxwell-dilaton gravity, capable of mimicking essential features of QCD. In particular we introduce a novel model that still captures well the QCD confinement and deconfinement phases, while allowing the introduction of a temperature in a phase which resembles the confined phase, this thanks to it being dual to a small black hole. We pay due attention to some subtleties of such model. We confirm the lattice picture of a strong build-up of thermal entropy towards the critical temperature T_c, both coming from below or above T_c. We also include a chemical potential, confirming this entropic picture and we consider its effect on the speed of sound. Moreover, the temperature dependent confinement phase from the holography side allows us to find a string tension that does not vanish at T_c, a finding also supported by lattice QCD.
33 pages. v2: improved discussion on string tension and extra references. v3: version accepted by PhysRevD
References in corpus (26)
- The equation of state in (2+1)-flavor QCD
- Linear Confinement and AdS/QCD
- Effective Holographic Theories for low-temperature condensed matter systems
- Exploring improved holographic theories for QCD: Part II
- Entanglement as a Probe of Confinement
- J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Mimicking the QCD equation of state with a dual black hole
- Thermodynamics and bulk viscosity of approximate black hole duals to finite temperature quantum chromodynamics
- A Holographic Prediction of the Deconfinement Temperature
- Deconfinement and Gluon Plasma Dynamics in Improved Holographic QCD
- 1/q^2 Corrections and Gauge/String Duality
- Improved Holographic QCD
- On the light glueball spectrum in a holographic description of QCD
- Quantum critical lines in holographic phases with (un)broken symmetry
- Dynamical holographic QCD with area-law confinement and linear Regge trajectories
- The melting of charmonium in a magnetic field from an effective AdS/QCD model
- Dissecting the string theory dual of QCD
- Holography and the speed of sound at high temperatures
- Deconfinement as an entropic self-destruction: a solution for the quarkonium suppression puzzle?
- Entropic destruction of heavy quarkonium in non-Abelian plasma from holography
- Holographic Entanglement Entropy in the QCD Phase Diagram with a Critical Point
- AdS/QCD, Entanglement Entropy and Critical Temperature
- Robustness of Sound Speed and Jet Quenching for Gauge/Gravity Models of Hot QCD
- Holographic Glueball Decay
- Entropic destruction of a rotating heavy quarkonium
- AdS Black Hole with Phantom Scalar Field