QCD propagators at non-vanishing temperatures
نویسندگان
چکیده
منابع مشابه
QCD Propagators at non-vanishing temperatures
We investigate the behaviour of the gluon and ghost propagators, especially their infrared properties, at non-vanishing temperatures. To this end we solve their Dyson-Schwinger equations on a torus and find an infrared enhanced ghost propagator and an infrared vanishing gluon propagator. Lattice simulations provide evidence that zero-flavour QCD undergoes a ”deconfining” phase transition at som...
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We present a strong coupling expansion that permits to develop analysis of quantum field theory in the infrared limit. Application to a quartic massless scalar field gives a massive spectrum and the propagator in this regime. We extend the approach to a pure Yang-Mills theory obtaining analogous results. The gluon propagator is compared satisfactorily with lattice results and similarly for the ...
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QCD at finite T and/or μ is of fundamental importance, since it describes physics relevant in the early universe, in neutron stars and in heavy ion collisions. Extensive experimental work has been done with heavy ion collisions at CERN and Brookhaven to explore the μ-T phase boundary (cf. ). Note, that past, present and future heavy ion experiments with always higher and higher energies produce...
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Correlators of magnetic and electric field energy density are investigated for SU(Nc) gauge theory at high temperatures T . At separations z ≤ 2/T the correlators are shown to be dominated by a power–law behavior even for finite gluon screening masses. This continuum behavior is well approximated on current 4×163–lattices in the perturbative limit and leads to a considerable overestimate of scr...
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ژورنال
عنوان ژورنال: Progress in Particle and Nuclear Physics
سال: 2004
ISSN: 0146-6410
DOI: 10.1016/j.ppnp.2004.02.028