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Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions
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Produced partons have large local relative orbital angular momentum along the direction opposite to the reaction plane in the early stage of non-central heavy-ion collisions. Parton scattering is shown to polarize quarks along the same direction due to spin-orbital coupling. Such global quark polarization will lead to many observable consequences, such as left-right asymmetry of hadron spectra, global transverse polarization of thermal photons, dileptons and hadrons. Hadrons from the decay of polarized resonances will have azimuthal asymmetry similar to the elliptic flow. Global hyperon polarization is predicted within different hadronization scenarios and can be easily tested.
Forward citations
Cited by 35 Pith papers
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Spin Femtoscopy: A Framework for Revealing Genuine Spin Correlations
Spin femtoscopy is proposed to separate genuine two-particle spin correlations from quantum statistics and final-state interaction effects via spin-sensitive correlation functions on Lambda pairs.
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Hyperon-pair spin tomography beyond scalar spin correlations
Scalar Lambda-pair spin correlations leave a continuous density-matrix degeneracy; full tensor tomography is required to claim entanglement, and a ³P₀ benchmark predicts a specific anisotropy pattern.
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Hyperon ($\Lambda$) polarization along the beam axis in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.36$ TeV
First LHC measurement of beam-axis Lambda polarization relative to the third-order event plane, with improved precision on the second-order plane and sensitivity to QGP transport coefficients.
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Modeling $\Lambda$ polarization in Au$+$Au collisions at $\sqrt{s_{\rm NN}}=200$ GeV using relativistic spin hydrodynamics
A (1+1+2)D spin hydrodynamics model with longitudinal spin acceleration and transverse expansion reproduces the quadrupole pattern in longitudinal Lambda polarization and matches Au+Au data at 200 GeV while predicting...
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An improved formula for Wigner function and spin polarization in a decoupling relativistic fluid at local thermodynamic equilibrium
A new derivation gives the spin polarization of emitted fermions in terms of thermal vorticity and shear evaluated on the decoupling surface, with the shear term expressed through the local hypersurface normal rather ...
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Local Spin Polarization in Anisotropic Gubser Flow: Suppression Mechanism and Formulation Dependence
In an anisotropic Gubser flow, the longitudinal spin polarization's sign depends on which shear formulation is used, and two popular formulations show exact or near-exact cancellation between vorticity and shear contr...
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Spectral Functions of $J/\psi$ Meson in Rotating Thermal Background from Holography
In a rotating thermal medium modeled by soft-wall holography, J/ψ spectral peaks split by −ΩJ_z along the rotation axis and acquire projection-dependent distortions for transverse momentum.
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CLVisc Agent for autonomous relativistic hydrodynamics studies
An LLM agent autonomously created a CLVisc skill and ran two hydrodynamic studies, finding that the high-temperature branch of η/s dominates flow suppression and that PGCM-uniform 16O decouples ellipticity from size.
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Vector-Meson Spin Alignment from Anisotropic Quark or Hadron Coalescence
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Polarization, Maximal Concurrence, and Pure States in High-Energy Collisions
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Is the shear induced spin polarization non-dissipative?
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Relativistic spin hydrodynamics with antisymmetric spin tensors and an extension of the Bargmann-Michel-Telegdi equation
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The Gilbert Damping Factor of Heavy Quark Spin Polarization in the Magnetic Field
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Strong Coupling Expansion of Gluodynamics on a Lattice under Rotation
A strong-coupling expansion on a rotating lattice gives a deconfinement temperature that decreases with angular velocity, contradicting lattice QCD simulations, alongside a general thermodynamic formula for the shift.
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Gluon polarization contribution to the spin alignment of vector mesons from holography
A soft-wall holographic QCD model with a rotation-dependent gluon field predicts that rotation enhances the spin alignment of phi and rho mesons at high pT while J/psi stays nearly unaffected.
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Vector and Tensor Spin Polarization for Vector Bosons at Local Equilibrium
Vector meson spin alignment at local equilibrium is shown to arise only at second order in thermodynamic gradients, with explicit analytic formulas for the contributing terms.
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Spin alignment of vector mesons in local equilibrium by Zubarev's approach
The spin alignment rho00-1/3 vanishes at first order in gradients in local equilibrium, with nonzero contributions first appearing at second order, in a pseudo-gauge dependent way.
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Pseudo-Gauge Stabilizers and Fibration Structure of the Cooper--Frye Map at Freeze-Out
The Cooper-Frye map at freeze-out admits a stratified fibration induced by pseudo-gauge stabilizers, classifying observables and recovering the Belinfante-canonical obstruction.
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Heavy quark polarization anisotropy as a novel probe of fireball geometry
Heavy-flavor polarization harmonics are introduced as observables whose Fourier coefficients are claimed to be proportional to the initial fireball spatial eccentricities.
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Exploring Data-Driven Corrections for $\phi$-Meson Global Spin Alignment Measurements
A data-driven correction built from combinatorial kaon pairs inside the phi mass window is tested with toy Monte Carlo, showing partial success and clear shortcomings.
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Impact of Tracking Resolutions on $\phi$-Meson Spin Alignment Measurement
Track angular and momentum resolutions shift the extracted phi-meson spin alignment parameter rho_00 by less than 0.0005 in STAR-like toy-model simulations, though the invariant-mass method's conversion formula is wrong.
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Effect of Coriolis Force on Diffusion of D Meson
D meson spatial diffusion in a rotating hadron gas becomes anisotropic, with perpendicular and Hall components controlled by the Coriolis force and the ratio of relaxation time to rotation time.
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Holographic light-quark energy loss in a spinning plasma
Holographic calculation in a spinning Myers-Perry black brane shows that higher temperature or rotation parameter a shortens light-quark stopping distance and increases instantaneous energy loss, with stronger anisotr...
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Global polarization of $\Lambda$, $\Xi^{-}$, and $\Omega^{-}$ hyperons in Au+Au collisions at RHIC BES-II energies
Hydrodynamic calculations show Omega hyperon polarization exceeds that of Lambda and Xi due to spin but falls below STAR data, with particle-antiparticle splitting growing at lower energies and driven by chemical pote...
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Attractors in a Generalized Relativistic Second Order Spin Hydrodynamics
Derives early-time fixed point structure and late-time asymptotics for spin density attractors in generalized second-order spin hydrodynamics using Zubarev's formalism in the spin probe limit.
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Polarization of an electron scattered by static potentials
A wavepacket electron scattered by a vector potential polarizes opposite to the direction from scalar, pseudovector, and pseudoscalar potentials.
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Charmonia Production in Hot QCD Matter and Electromagnetic Fields
The paper explains the measured rise of charmonium nuclear modification factor above unity at pT<0.1 GeV/c in peripheral Pb-Pb collisions as coherent photoproduction from strong electromagnetic fields.
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Experimental Search for the Chiral Magnetic Effect in Relativistic Heavy-Ion Collisions: A Perspective
The chiral magnetic effect in heavy-ion collisions remains unconfirmed, with current data giving a 2.9-sigma hint in Au+Au and an upper limit near 10% in isobar collisions.
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Imaginary potential and thermal width in the spinning black hole background from holography
In the planar limit of the Myers-Perry black hole, increasing the boost parameter makes the imaginary quarkonium potential appear at smaller separations and enlarges the thermal width, most strongly for transverse pai...
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Local spin polarization of $\Lambda$ hyperons and its interaction corrections
The CLVisc hydrodynamic model reproduces the second sine Fourier coefficient of Lambda longitudinal polarization in Au+Au collisions but fails in p+Pb collisions; the paper also surveys quantum kinetic theory and spin...
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Spin dynamics and polarization in relativistic systems: recent developments
The review summarizes developments in spin hydrodynamics, polarization from spin-vorticity coupling, pseudo-gauge freedom, and heavy-flavor spin dynamics in relativistic systems.
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Spin alignment of vector mesons in heavy-ion collision
A proceedings review in which the authors argue that strong-field fluctuations, not shear stress, explain the measured phi meson spin alignment in heavy-ion collisions.
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An introduction to relativistic spin hydrodynamics
A review that derives the constitutive equations of relativistic spin hydrodynamics from thermodynamics and surveys challenges like pseudo-gauge ambiguity and spin freeze-out.
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