Hadronic Transport Coefficients from Effective Field Theories [[electronic resource] /] / by Juan M. Torres-Rincon

• Record Nr.: UNINA9910300385203321
• Autore: Torres-Rincon Juan M
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2014
• ISBN: 3-319-00425-5
• Edizione: [1st ed. 2014.]
• Descrizione fisica: 1 online resource (220 p.)
• Collana: Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5053
• Disciplina: 539.7216
• Soggetti: Nuclear physics; Heavy ions; Thermodynamics; Mathematical physics; Low temperature physics; Low temperatures; Nuclear Physics, Heavy Ions, Hadrons; Theoretical, Mathematical and Computational Physics; Low Temperature Physics
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Doctoral thesis accepted by the Universidad Complutense de Madrid, Spain.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Relativistic Heavy Ion Collisions -- Boltzmann-Uehling-Uhlenbeck Equation -- Shear Viscosity and KSS Coefficient -- Bulk Viscosity -- Thermal and Electrical Conductivities -- Bhatnagar-Gross-Krook or Relaxation Time Approximation -- Strangeness Diffusion -- Charm Diffusion -- Linear Sigma Model and Phase Transitions -- Measurement of the Bulk Viscosity.
• Sommario/riassunto: This dissertation focuses on the calculation of transport coefficients in the matter created in a relativistic heavy-ion collision after chemical freeze-out. This matter can be well approximated using a pion gas out of equilibrium. We describe the theoretical framework needed to obtain the shear and bulk viscosities, the thermal and electrical conductivities and the flavor diffusion coefficients of a meson gas at low ; temperatures. To describe the interactions of the degrees of freedom, we use effective field theories with chiral and heavy quark symmetries. We subsequently introduce the unitarization methods in order to obtain a scattering amplitude that satisfies the unitarity condition exactly, then go on to calculate the transport properties of the low-temperature phase of quantum chromodynamics - the hadronic medium - which can be used in hydrodynamic simulations of a relativistic heavy-ion collision and its subsequent evolution. We show that the shear viscosity over entropy density exhibits a minimum in a phase transition by studying this coefficient in atomic Argon (around the liquid-gas phase transition) and in the linear sigma model in the limit of a large number of scalar fields (which presents a chiral phase transition). Finally, we provide an experimental method for estimating the bulk viscosity in relativistic heavy-ion collisions by performing correlations of the fluctuating components of the stress-energy tensor.