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Equation of state of strongly interacting matter: spectra for thermal particles and intensity correlation of thermal photons |
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Content: |
We find that an equation of state for hot hadronic matter consisting of all
baryons having M < 2 GeV and all mesons having M < 1.5 GeV, along with
Hagedorn resonances in thermal and chemical equilibrium, matches rather
smoothly with lattice equation of state (p4 action, N_t = 8) for T upto 200
MeV, when corrected for the finite volume of hadrons.
Next we construct two equations of state for strongly interacting matter;
one, (HHL), in which the above is matched to the lattice equation of state at
T = 165 MeV and the other, (HHB), where we match it to a bag model equation
of state with critical temperature T_c = 165 MeV.
We compare particle spectra, thermal photon spectra and histories of evolution
of the quark-gluon plasma produced in the central collision of gold (lead) nuclei
at RHIC (LHC) energies, using relativistic hydrodynamics. The particle and
thermal photon spectra are seen to differ only marginally, for the two equations
of state. The history of evolution shows differences in the evolution of
temperature and radial velocity, as one might expect.
We calculate intensity interferometry of thermal photons and find it to
be quite distinct for the two equations of state, especially for the outward
correlation. The longitudinal correlation also shows a dependence on the equation
of state, though, to a smaller extent. |
Id: |
47 |
Place: |
Room: Main Auditorium |
Starting date: |
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Duration: |
00' |
Primary Authors: |
Mr. DE, Somnath (vecc) |
Co-Authors: |
SRIVASTAVA, Dinesh Kumar (vecc) CHATTERJEE, Rupa (University of Jyvaskyla) |
Presenters: |
Mr. DE, Somnath |
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