Strangeness thermodynamic instabilities in hot and dense nuclear matter

Abstract

We explore the presence of thermodynamic instabilities and, con\-se\-quen\-tly, the realization of a pure hadronic phase transition in the hot and finite baryon density nuclear matter. The analysis is performed by means of an effective relativistic mean-field model with the inclusion of hyperons, $\Delta$-isobars, and the lightest pseudoscalar and vector meson degrees of freedom. The Gibbs conditions on the global conservation of baryon number and zero net strangeness in symmetric nuclear matter are required. Similarly to the liquid-gas phase transition, we show that a phase transition, characterized by mechanical instabilities (due to fluctuations on the baryon number) and chemical-diffusive instabilities (due to fluctuations on the strangeness number), can take place for a finite range of $\Delta$-meson coupling constants, compatible with different experimental constraints. The hadronic phase transition, which presents similar features to the quark-hadron phase transition, is characterized by different strangeness content during the mixed phase and, consequently, by a sensible variation of the strange anti-particle to particle ratios.

9 pages

References in corpus (23)

• Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR
• Sound velocity bound and neutron stars
• GW190814: Impact of a 2.6 solar mass neutron star on nucleonic equations of state
• Was GW190814 a black hole -- strange quark star system?
• Proto-neutron stars with heavy baryons and universal relations
• Examination of the directed flow puzzle in heavy-ion collisions
• Breaking the sound barrier in AdS/CFT
• Delta baryons and diquark formation in the cores of neutron stars
• Hot and dense hadronic matter in an effective mean field approach
• Event simulation based on three-fluid hydrodynamics for collisions at energies available at the Dubna Nuclotron-based Ion Collider Facility and at the Facility for Antiproton and Ion Research in Darmstadt
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• Softening of the equation of state of matter at large densities and temperatures: chiral symmetry restoration vs. quark deconfinement
• $\Delta$-admixed neutron stars: spinodal instabilities and dUrca processes
• Properties of the Quark Gluon Plasma: A lattice perspective
• Chemical and mechanical instability in warm and dense nuclear matter
• Nonextensive statistical effects and strangeness production in hot and dense nuclear matter
• Examination of strangeness instabilities and effects of strange meson couplings in dense strange hadronic matter and compact stars
• Effects of the QCD phase transition on hadronic observables in relativistic hydrodynamic simulations of heavy-ion reactions in the FAIR/NICA energy regime
• Statistical treatment of nuclear clusters in the continuum
• Liquid-gas Phase Transition in Strange Hadronic Matter with Weak Y-Y Interaction
• Status of the Compressed Baryonic Matter experiment at FAIR
• Chiral phase transition and kaon-to-pion ratios in the entanglement SU(3) PNJL model
• Merger of a Neutron Star with a Black Hole: one-family vs. two-families scenario

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• Role of thermal fluctuations in nucleation of three-flavor quark matter