Vorticity and Λ polarization in baryon rich matter
Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028 Kishinev, Moldova
2 Joint Institute for Nuclear Research, 141980 Dubna, Russia
3 National Research Nuclear University (MEPhI), 115409 Moscow, Russia
4 Alikhanov Institute for Theoretical and Experimental Physics (ITEP) B. Cheremushkinskaya ul. 25, RU-117218 Moscow, Russia
5 School of Biomedicine, Far Eastern Federal University, Vladivostok, 690950, Russia
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Published online: 2 February 2018
The polarization of Λ hyperons due to axial chiral vortical effect is discussed. The effect is proportional to (strange) chemical potential and is pronounced at lower energies in baryon-rich matter. The polarization of ¯ has the same sihn and larger magnitude. The emergence of vortical structures is observed in kinetic QGSM models. The hydrodynamical helicity separation receives the contribution of longitudinal velocity and vorticity implying the quadrupole structure of the latter. The transition from the quark vortical effects to baryons in confined phase may be achieved by exploring the axial charge. At the hadronic level the polarization corresponds to the cores of quantized vortices in pionic superfluid. The chiral vortical effects may be also studied in the frmework of Wigner function establishing the relation to the thermodynamical approach to polarization.
© The Authors, published by EDP Sciences, 2018
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