String breaking in SU(2) gauge theory with scalar matter fields

被引：62

作者：

Knechtli, F ^{[1
]}

Sommer, R ^{[1
]}

机构：

[1] DESY, D-15738 Zeuthen, Germany

来源：

PHYSICS LETTERS B | 1998年 / 440卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)01098-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the static potential in the confinement phase of the SU(2) Higgs model on the lattice, where this model is expected to have properties similar to QCD. We observe that Wilson loops are inadequate to determine the potential at large distances, where the formation of two color-neutral mesons is expected. Introducing smeared fields and a suitable matrix correlation function, we are able to overcome this difficulty. We observe string breaking at a distance r(b) approximate to 1.8 r(0), where the length scale ro has a value r(0) approximate to 0.5 fm in QCD. The method presented here may lead the way towards a treatment of string breaking in QCD. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：345 / 352

页数：8

共 23 条

[1] GLUEBALL MASSES AND STRING TENSION IN LATTICE QCD [J].

ALBANESE, M ;

COSTANTINI, F ;

FIORENTINI, G ;

FLORE, F ;

LOMBARDO, MP ;

TRIPICCIONE, R ;

BACILIERI, P ;

FONTI, L ;

GIACOMELLI, P ;

REMIDDI, E ;

BERNASCHI, M ;

CABIBBO, N ;

MARINARI, E ;

PARISI, G ;

SALINA, G ;

CABASINO, S ;

MARZANO, F ;

PAOLUCCI, P ;

PETRARCA, S ;

RAPUANO, F ;

MARCHESINI, P ;

RUSACK, R .

PHYSICS LETTERS B, 1987, 192 (1-2) :163-169

[2] Hadron spectroscopy and static quark potential in full QCD: A comparison of improved actions on the CP-PACS [J].

Aoki, S ;

Boyd, G ;

Burkhalter, R ;

Hashimoto, S ;

Ishizuka, N ;

Iwasaki, Y ;

Kanaya, K ;

Kaneko, T ;

Kuramashi, Y ;

Okawa, M ;

Ukawa, A ;

Yoshie, T .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 1998, 63 :221-226

[3] STATIC QUARK-ANTIQUARK POTENTIAL - SCALING BEHAVIOR AND FINITE-SIZE EFFECTS IN SU(3) LATTICE GAUGE-THEORY [J].

BALI, GS ;

SCHILLING, K .

PHYSICAL REVIEW D, 1992, 46 (06) :2636-2646

[4] SCREENING OF THE CONFINEMENT POTENTIAL IN THE SU(2) LATTICE GAUGE-THEORY WITH SCALAR MATTER [J].

BOCK, W ;

EVERTZ, HG ;

JANSEN, K ;

JERSAK, J ;

KANAYA, K ;

KASTRUP, HA ;

LANDAU, DP ;

NEUHAUS, T ;

XU, JL .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 45 (04) :597-605

[5] THE RUNNING COUPLING FROM SU(3) LATTICE GAUGE-THEORY [J].

BOOTH, SP ;

HENTY, DS ;

HULSEBOS, A ;

IRVING, AC ;

MICHAEL, C ;

STEPHENSON, PW .

PHYSICS LETTERS B, 1992, 294 (3-4) :385-390

[6] SU (2) POTENTIALS FROM LARGE LATTICES [J].

BOOTH, SP ;

HULSEBOS, A ;

IRVING, AC ;

MCKERRELL, A ;

MICHAEL, C ;

SPENCER, PS ;

STEPHENSON, PW .

NUCLEAR PHYSICS B, 1993, 394 (02) :509-526

[7] LATTICE YANG-MILLS THEORY AT NON-ZERO TEMPERATURE AND THE CONFINEMENT PROBLEM [J].

BORGS, C ;

SEILER, E .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1983, 91 (03) :329-380

[8] MONTE-CARLO METHODS AND RESULTS FOR THE ELECTROWEAK PHASE-TRANSITION [J].

BUNK, B .

NUCLEAR PHYSICS B, 1995, :566-568

[9] MONTE-CARLO STUDY OF QUANTIZED SU(2) GAUGE-THEORY [J].

CREUTZ, M .

PHYSICAL REVIEW D, 1980, 21 (08) :2308-2315

[10]

DRUMMOND IT, 1998, HEPLAT9805012

← 1 2 3 →