Lattice QCD with many flavours

被引：47

作者：

Damgaard, PH ^{[1
]}

Heller, UM ^{[1
]}

Krasnitz, A ^{[1
]}

Olesen, P ^{[1
]}

机构：

[1] FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST,TALLAHASSEE,FL 32306

来源：

PHYSICS LETTERS B | 1997年 / 400卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(97)00355-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the confining and chiral-symmetry breaking properties of QCD with a large number of flavors N-f. In a Monte Carlo simulation of QCD with N-f = 16 staggered fermions, we find clear evidence of a first order bulk phase transition which separates phases with broken and unbroken chiral symmetry. This is consistent with extrapolations of earlier studies with smaller N-f, and is also as expected from general arguments. Thus, even when the perturbative renormalization group flow has a new infrared stable fixed point near the origin, lattice artifacts induce chiral symmetry breaking, and presumably confinement, at sufficiently strong coupling. (C) 1997 Elsevier Science B.V.

引用

页码：169 / 175

页数：7

共 25 条

[1]

Appelquist T, 1996, PHYS REV LETT, V77, P1214, DOI 10.1103/PhysRevLett.77.1214

[2] THE NATURE OF THE PHASE-TRANSITION IN LATTICE QCD WITH MANY FLAVORS [J].

ATTIG, N ;

PETERSSON, B ;

WOLFF, M .

PHYSICS LETTERS B, 1987, 190 (1-2) :143-146

[3] ON THE PHASE-STRUCTURE OF VECTOR-LIKE GAUGE-THEORIES WITH MASSLESS FERMIONS [J].

BANKS, T ;

ZAKS, A .

NUCLEAR PHYSICS B, 1982, 196 (02) :189-204

[4]

BERNARD C, E COMMUNICATION

[5]

BERNARD C, 1991, WORKSHOP FERMION ALG

[6] HADRON SPECTRUM IN QCD AT 6/G2=5.6 [J].

BITAR, KM ;

EDWARDS, R ;

HELLER, UM ;

KENNEDY, AD ;

LIU, WQ ;

DEGRAND, TA ;

GOTTLIEB, S ;

KRASNITZ, A ;

KOGUT, JB ;

RENKEN, RL ;

OGILVIE, MC ;

ROSSI, P ;

SINCLAIR, DK ;

WANG, KC ;

SUGAR, RL ;

TEPER, M ;

TOUSSAINT, D .

PHYSICAL REVIEW D, 1990, 42 (11) :3794-3818

[7] CHIRAL SYMMETRY-BREAKING IN THE ACTION FORMULATION OF LATTICE GAUGE-THEORY [J].

BLAIRON, JM ;

BROUT, R ;

ENGLERT, F ;

GREENSITE, J .

NUCLEAR PHYSICS B, 1981, 180 (03) :439-457

[8] LATTICE QCD WITH 8 LIGHT-QUARK FLAVORS [J].

BROWN, FR ;

CHEN, H ;

CHRIST, NH ;

DONG, ZH ;

MAWHINNEY, RD ;

SCHAFFER, W ;

VACCARINO, A .

PHYSICAL REVIEW D, 1992, 46 (12) :5655-5670

[9] ASYMPTOTIC-BEHAVIOR OF NON-ABELIAN GAUGE THEORIES TO 2-LOOP ORDER [J].

CASWELL, WE .

PHYSICAL REVIEW LETTERS, 1974, 33 (04) :244-246

[10]

CHIVIKULA RS, HEPPH9612267

← 1 2 3 →