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Title: Hydrodynamics from Landau initial conditions

Abstract

We investigate ideal hydrodynamic evolution, with Landau initial conditions, both in a semi-analytical 1+1D approach and in a numerical code incorporating event-by-event variation with many events and transverse density inhomogeneities. The object of the calculation is to test how fast would a Landau initial condition transition to a commonly used boost-invariant expansion. We show that the transition to boost-invariant flow occurs too late for realistic setups, with corrections of O (20 - 30%) expected at freezeout for most scenarios. Moreover, the deviation from boost-invariance is correlated with both transverse flow and elliptic flow, with the more highly transversely flowing regions also showing the most violation of boost invariance. Therefore, if longitudinal flow is not fully developed at the early stages of heavy ion collisions, 2+1 dimensional hydrodynamics is inadequate to extract transport coefficients of the quark-gluon plasma. Based on [1, 2]

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. University of Tennessee, Knoxville (UTK)
  2. Frankfurt Institute for Advanced Studies (FIAS), Germany
  3. Universidade Estadual de Campinas, Instituto de Física "Gleb Wataghin" (IFGW), Sao Paulo, Brazil
  4. University of Tennessee (UTK) and Oak Ridge National Laboratory (ORNL)
  5. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1261463
DOE Contract Number:
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: XXXVII Brazilian Meeting on Nuclear Physics, Maresias, Spain, 20140908, 20140912
Country of Publication:
United States
Language:
English

Citation Formats

Sen, Abhisek, Gerhard, Jochen, Torrieri, Giorgio, Read jr, Kenneth F., and Wong, Cheuk-Yin. Hydrodynamics from Landau initial conditions. United States: N. p., 2015. Web.
Sen, Abhisek, Gerhard, Jochen, Torrieri, Giorgio, Read jr, Kenneth F., & Wong, Cheuk-Yin. Hydrodynamics from Landau initial conditions. United States.
Sen, Abhisek, Gerhard, Jochen, Torrieri, Giorgio, Read jr, Kenneth F., and Wong, Cheuk-Yin. Thu . "Hydrodynamics from Landau initial conditions". United States. doi:. https://www.osti.gov/servlets/purl/1261463.
@article{osti_1261463,
title = {Hydrodynamics from Landau initial conditions},
author = {Sen, Abhisek and Gerhard, Jochen and Torrieri, Giorgio and Read jr, Kenneth F. and Wong, Cheuk-Yin},
abstractNote = {We investigate ideal hydrodynamic evolution, with Landau initial conditions, both in a semi-analytical 1+1D approach and in a numerical code incorporating event-by-event variation with many events and transverse density inhomogeneities. The object of the calculation is to test how fast would a Landau initial condition transition to a commonly used boost-invariant expansion. We show that the transition to boost-invariant flow occurs too late for realistic setups, with corrections of O (20 - 30%) expected at freezeout for most scenarios. Moreover, the deviation from boost-invariance is correlated with both transverse flow and elliptic flow, with the more highly transversely flowing regions also showing the most violation of boost invariance. Therefore, if longitudinal flow is not fully developed at the early stages of heavy ion collisions, 2+1 dimensional hydrodynamics is inadequate to extract transport coefficients of the quark-gluon plasma. Based on [1, 2]},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Conference:
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