Quark matter nucleation in hot hadronic matter |
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Authors: | I Bombaci D Logoteta PK Panda C Providência I Vidaa |
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Institution: | aDipartimento di Fisica “E. Fermi”, Università di Pisa, and INFN, Sezione di Pisa, Largo B. Pontecorvo, 3, I-56127 Pisa, Italy;bIndian Association for the Cultivation of Sciences, Jadavpur, Kolkata-700 032, India;cCentro de Física Computacional, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal |
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Abstract: | We study the quark deconfinement phase transition in hot β-stable hadronic matter. Assuming a first order phase transition, we calculate the enthalpy per baryon of the hadron–quark phase transition. We calculate and compare the nucleation rate and the nucleation time due to thermal and quantum nucleation mechanisms. We compute the crossover temperature above which thermal nucleation dominates the finite temperature quantum nucleation mechanism. We next discuss the consequences for the physics of proto-neutron stars. We introduce the concept of limiting conversion temperature and critical mass Mcr for proto-hadronic stars, and we show that proto-hadronic stars with a mass M<Mcr could survive the early stages of their evolution without decaying to a quark star. |
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Keywords: | Dense matter Elementary particles Stars neutron |
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