منابع مشابه
Probing the QCD Equation of State ∗
We propose a novel quasiparticle interpretation of the equation of state of deconfined QCD at finite temperature. Using appropriate thermal masses, we introduce a phenomenological parametrisation of the onset of confinement in the vicinity of the phase transition. Lattice results of bulk thermodynamic quantities are well reproduced, the extension to small quark chemical potential is also succes...
متن کاملProbing the equation of state with pions
The influence of the isospin-independent, isospinand momentum-dependent equation of state (EoS), as well as the Coulomb interaction on the pion production in intermediate energy heavy ion collisions (HICs) is studied for both isospin-symmetric and neutron-rich systems. The Coulomb interaction plays an important role in the reaction dynamics, and strongly influences the rapidity and transverse m...
متن کاملQCD Equation of State and Dark Matter
The QCD equation of state is not often discussed in cosmology. However, the relic density of weakly interacting massive particles (WIMPs) depends on the entropy and the expansion rate of the Universe when they freeze out, at a temperature in the range 400 MeV – 40GeV, where QCD corrections are still important. We use recent analytic and lattice calculations of the QCD pressure to produce a new ...
متن کاملProbing the softest region of nuclear equation-of-state
An attractive, energy-dependent meaneld potential for baryons is introduced in order to generate a soft region in the nuclear equation-of-state, as suggested by recent lattice QCD calculations of baryon free matter at nite temperature. Based on a hadronic transport model, we nd that although this equation-of-state has negligible e ects on the inclusive hadronic spectra, it leads to a minimum in...
متن کاملCharm Quarks and the QCD Equation of State
We present a study of the effect of charm quarks on the QCD equation of state using partiallyquenched p4 charm quarks on a dynamically generated 2+1 flavor background, at zero chemical potential. We show preliminary results for the charm quark contribution to the energy density and pressure in the high temperature region (Tc < T < 4Tc) and compare it to the free-field calculation. The charm qua...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2003
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(03)01041-8