Probing the region of massless quarks in quenched lattice QCD using Wilson fermions

被引:23
作者
Edwards, RG [1 ]
Heller, UM
Narayanan, R
Singleton, RL
机构
[1] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA
[2] Univ Washington, Dept Phys, Seattle, WA 98195 USA
关键词
lattice QCD; Wilson fermions;
D O I
10.1016/S0550-3213(98)00104-7
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study the spectrum of H(m) = gamma(5)W(-m) with W(m) being the Wilson-Dirac operator on the lattice with bare mass equal to m. The background gauge fields are generated using the SU(3) Wilson action at beta = 5.7 on an 8(3) x 16 lattice. We find evidence that the spectrum of H(m) is gapless for 1.02 < m < 2.0, implying thar the physical quark is massless in this whole region. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:319 / 336
页数:18
相关论文
共 20 条
[1]  
ATIYAH MF, 1968, ANN MATH, V87, P484, DOI 10.2307/1970715
[2]   CHIRAL SYMMETRY-BREAKING IN CONFINING THEORIES [J].
BANKS, T ;
CASHER, A .
NUCLEAR PHYSICS B, 1980, 169 (1-2) :103-125
[3]  
BARDEEN W, HEPLAT9705008
[4]  
BITAR KM, HEPTH9710052
[5]  
BLUM T, HEPLAT9611030
[6]  
BUNK B, 1994, DESY REPORT
[7]   HADRON MASSES FROM THE VALENCE APPROXIMATION TO LATTICE QCD [J].
BUTLER, F ;
CHEN, H ;
SEXTON, J ;
VACCARINO, A ;
WEINGARTEN, D .
NUCLEAR PHYSICS B, 1994, 430 (01) :179-228
[8]   EVIDENCE FOR THE ROLE OF INSTANTONS IN HADRON STRUCTURE FROM LATTICE QCD [J].
CHU, MC ;
GRANDY, JM ;
HUANG, S ;
NEGELE, JW .
PHYSICAL REVIEW D, 1994, 49 (11) :6039-6050
[9]   CORRELATION-FUNCTIONS OF HADRON CURRENTS IN THE QCD VACUUM CALCULATED IN LATTICE QCD [J].
CHU, MC ;
GRANDY, JM ;
HUANG, S ;
NEGELE, JW .
PHYSICAL REVIEW D, 1993, 48 (07) :3340-3353
[10]  
CHU MC, 1993, PHYS REV LETT, V70, P225