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Titolo:
PERTURBATIVE VERSUS LATTICE QCD ENERGY DENSITY CORRELATORS AT HIGH-TEMPERATURES
Autore:
RISCHKE DH; GYULASSY M;
Indirizzi:
COLUMBIA UNIV,DEPT PHYS,PUPIN PHYS LABS,538 W 120TH ST NEW YORK NY 10027
Titolo Testata:
Nuclear physics. B
fascicolo: 3, volume: 442, anno: 1995,
pagine: 563 - 589
SICI:
0550-3213(1995)442:3<563:PVLQED>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUARK-GLUON PLASMA; FINITE TEMPERATURE; GAUGE-THEORY; HOT QCD; CONDUCTIVITY; PHASE; MASS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
D.H. Rischke e M. Gyulassy, "PERTURBATIVE VERSUS LATTICE QCD ENERGY DENSITY CORRELATORS AT HIGH-TEMPERATURES", Nuclear physics. B, 442(3), 1995, pp. 563-589

Abstract

Correlators of magnetic and electric field energy density are investigated for SU(N-c) gauge theory at high temperatures T. At separations z less than or equal to 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 x 16(3)-lattices in the perturbative limit and leads to a considerable overestimate of screening masses deduced from fitting the lattice correlators with conventional exponential forms. The use of extended sources and sinks to enhance the signal improves the situation for screening masses m much greater than T but leads to a largely uncontrolled error for masses less than T. In fact, we show that recent lattice QCD data of Grossmann et al., from which a magnetic screening mass m(M) approximate to 2.9 T was deduced, may even be consistent with a vanishing actual magnetic screening mass.

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Documento generato il 15/07/20 alle ore 21:25:25