Volume 72, Number 1, October 2005
|Page(s)||69 - 75|
|Section||The physics of elementary particles and fields|
|Published online||17 August 2005|
Thermodynamic correction to the strong interaction in the perturbative regime
China Center of Advanced Science & Technology (World Lab.) - Beijing 100080, PRC and Institute of High Energy Physics, CAS - 19B Yuquanlu, Beijing 100039, PRC and Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology 77 Mass. Ave., Cambridge, MA 02139-4307, USA
Accepted: 21 July 2005
The properties of quark matter from perturbative QCD have thermodynamic inconsistencies. A thermodynamically determined new term can solve the problem, serving as a likely way from perturbative to non-perturbative effects. Consequently, quark matter can be self bound at about 4 times the normal nuclear saturation density, and the density behavior of sound velocity becomes opposite to the previous finding, which alters the mass-radius relation significantly to allow pulsars to be a candidate of quark stars.
PACS: 12.39.-x – Phenomenological quark models / 12.38.Bx – Perturbative calculations / 26.60.+c – Nuclear matter aspects of neutron stars
© EDP Sciences, 2005
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