© 2014

Hadronic Transport Coefficients from Effective Field Theories


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xix
  2. Juan M. Torres-Rincon
    Pages 1-31
  3. Juan M. Torres-Rincon
    Pages 33-45
  4. Juan M. Torres-Rincon
    Pages 47-62
  5. Juan M. Torres-Rincon
    Pages 63-73
  6. Juan M. Torres-Rincon
    Pages 75-89
  7. Juan M. Torres-Rincon
    Pages 91-97
  8. Juan M. Torres-Rincon
    Pages 99-107
  9. Juan M. Torres-Rincon
    Pages 109-133
  10. Juan M. Torres-Rincon
    Pages 135-152
  11. Juan M. Torres-Rincon
    Pages 153-165
  12. Juan M. Torres-Rincon
    Pages 167-169
  13. Back Matter
    Pages 171-215

About this book


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.


Bulk Viscosity Chiral Perturbation Theory Effective Theories Hadron Gas Heavy Ion Collisions Heavy Meson Diffusion Heavy Quark Effective Theory Shear Viscosity Transport Coeffcients Unitarization Methods

Authors and affiliations

  1. 1.Inst. de Ciencias del Espacio Camp. UAB, Fac. de CienciasCampus Universitat Autónoma de BarcelonaBellaterraSpain

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