Hadron spectroscopy with dynamical chirally improved fermions

被引：48

作者：

Gattringer, Christof ^{[1
]}

Hagen, Christian ^{[2
]}

Lang, C. B. ^{[1
]}

Limmer, Markus ^{[1
]}

Mohler, Daniel ^{[1
]}

Schaefer, Andreas ^{[2
]}

机构：

[1] Graz Univ, Inst Phys, FB Theoret Physik, A-8010 Graz, Austria

[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 05期

关键词：

EXACTLY MASSLESS QUARKS; LATTICE QCD; SYMMETRY; SPECTRUM; MATRIX; SCALE;

D O I：

10.1103/PhysRevD.79.054501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We simulate two dynamical, mass-degenerate light quarks on 16(3)x32 lattices with a spatial extent of 2.4 fm using the chirally improved Dirac operator. The simulation method, the implementation of the action, and signals of equilibration are discussed in detail. Based on the eigenvalues of the Dirac operator we discuss some qualitative features of our approach. Results for ground-state masses of pseudoscalar and vector mesons as well as for the nucleon and delta baryons are presented.

引用

页数：18

共 77 条

[1] LATTICE QCD ON SMALL COMPUTERS [J].

ALFORD, M ;

DIMM, W ;

LEPAGE, GP ;

HOCKNEY, G ;

MACKENZIE, PB .

PHYSICS LETTERS B, 1995, 361 (1-4) :87-94

[2] Effects of nonperturbatively improved dynamical fermions in QCD at fixed lattice spacing -: art. no. 054502 [J].

Allton, CR ;

Booth, SP ;

Bowler, KC ;

Garden, J ;

Hart, A ;

Hepburn, D ;

Irving, AC ;

Joó, B ;

Kenway, RD ;

Maynard, CM ;

McNeile, C ;

Michael, C ;

Pickles, SM ;

Sexton, JC ;

Sharkey, KJ ;

Sroczynski, Z ;

Talevi, M ;

Teper, M ;

Wittig, H .

PHYSICAL REVIEW D, 2002, 65 (05)

[3] Two-flavor QCD simulation with exact chiral symmetry [J].

Aoki, S. ;

Fukaya, H. ;

Hashimoto, S. ;

Ishikawa, K-I. ;

Kanaya, K. ;

Kaneko, T. ;

Matsufuru, H. ;

Okamoto, M. ;

Okawa, M. ;

Onogi, T. ;

Ukawa, A. ;

Yamada, N. ;

Yoshie, T. .

PHYSICAL REVIEW D, 2008, 78 (01)

[4] Unquenched QCD simulation results [J].

Aoki, S .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2001, 94 :3-18

[5] Maximum entropy analysis of the spectral functions in lattice QCD [J].

Asakawa, M ;

Nakahara, Y ;

Hatsuda, T .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 46, NO 2, 2001, 46 (02) :459-508

[6] INDEX OF ELLIPTIC OPERATORS .4. [J].

ATIYAH, MF ;

SINGER, IM .

ANNALS OF MATHEMATICS, 1971, 93 (01) :119-&

[7] pi and rho structure functions from lattice QCD [J].

Best, C ;

Gockeler, M ;

Horsley, R ;

Ilgenfritz, EM ;

Perlt, H ;

Rakow, P ;

Schafer, A ;

Schierholz, G ;

Schiller, A ;

Schramm, S .

PHYSICAL REVIEW D, 1997, 56 (05) :2743-2754

[8]

BLOSSIER B, 2008, P SCI LAT2008

[9] Chronological inversion method for the Dirac matrix in hybrid Monte Carlo [J].

Brower, RC ;

Ivanenko, T ;

Levi, AR ;

Orginos, KN .

NUCLEAR PHYSICS B, 1997, 484 (1-2) :353-374

[10] Variational method for lattice spectroscopy with ghosts [J].

Burch, T ;

Gattringer, C ;

Glozman, LY ;

Hagen, C ;

Lang, CB .

PHYSICAL REVIEW D, 2006, 73 (01)

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