SPHALERON TRANSITIONS AND BARYON ASYMMETRY - A NUMERICAL, REAL-TIME ANALYSIS

被引：171

作者：

AMBJORN, J

ASKGAARD, T

PORTER, H

SHAPOSHNIKOV, ME

机构：

[1] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, SCOTLAND

[2] ACAD SCI USSR, INST NUCL RES, MOSCOW 117312, USSR

来源：

NUCLEAR PHYSICS B | 1991年 / 353卷 / 02期

关键词：

D O I：

10.1016/0550-3213(91)90341-T

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 estimate by numerical simulations the rate-GAMMA of sphaleron-like transitions in the electroweak theory in the phase with restored symmetry. There is no suppression and GAMMA = kappa(alpha-W(T))4 with kappa almost-equal-to 0.1-1.0. We further address the question of a spontaneous CP-breaking in this phase of the electroweak theory, but have not yet found any evidence in this direction.

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页码：346 / 378

页数：33

相关论文

共 30 条

[1] BARYON ASYMMETRY OF THE UNIVERSE - A MONTE-CARLO STUDY ON THE LATTICE [J].

AMBJORN, J ;

LAURSEN, M ;

SHAPOSHNIKOV, ME .

PHYSICS LETTERS B, 1987, 197 (1-2) :49-54

[2] BARYON ASYMMETRY GENERATION IN THE ELECTROWEAK THEORY - A LATTICE STUDY [J].

AMBJORN, J ;

LAURSEN, ML ;

SHAPOSHNIKOV, ME .

NUCLEAR PHYSICS B, 1989, 316 (02) :483-508

[3] LATTICE SIMULATIONS OF ELECTROWEAK SPHALERON TRANSITIONS IN REAL-TIME [J].

AMBJORN, J ;

ASKGAARD, T ;

PORTER, H ;

SHAPOSHNIKOV, ME .

PHYSICS LETTERS B, 1990, 244 (3-4) :479-487

[4] SPHALERONS, SMALL FLUCTUATIONS, AND BARYON-NUMBER VIOLATION IN ELECTROWEAK THEORY [J].

ARNOLD, P ;

MCLERRAN, L .

PHYSICAL REVIEW D, 1987, 36 (02) :581-595

[5]

Bochkarev A.I., 1987, MOD PHYS LETT A, V2, P417, DOI DOI 10.1142/S0217732387000537

[6] TOPOLOGICAL TRANSITIONS AT FINITE TEMPERATURES - A REAL-TIME NUMERICAL APPROACH [J].

GRIGORIEV, DY ;

RUBAKOV, VA ;

SHAPOSHNIKOV, ME .

NUCLEAR PHYSICS B, 1989, 326 (03) :737-757

[7] SOLITON PAIR CREATION AT FINITE TEMPERATURES - NUMERICAL STUDY IN (1 + 1) DIMENSIONS [J].

GRIGORIEV, DY ;

RUBAKOV, VA .

NUCLEAR PHYSICS B, 1988, 299 (01) :67-78

[8] SPHALERON TRANSITIONS AT FINITE TEMPERATURES - NUMERICAL STUDY IN (1+1) DIMENSIONS [J].

GRIGORIEV, DY ;

RUBAKOV, VA ;

SHAPOSHNIKOV, ME .

PHYSICS LETTERS B, 1989, 216 (1-2) :172-176

[9] QCD AND INSTANTONS AT FINITE TEMPERATURE [J].

GROSS, DJ ;

PISARSKI, RD ;

YAFFE, LG .

REVIEWS OF MODERN PHYSICS, 1981, 53 (01) :43-80

[10] BARYON ASYMMETRY OF THE UNIVERSE IN GRAND UNIFIED THEORIES [J].

IGNATIEV, AY ;

KUZMIN, VA ;

SHAPOSHNIKOV, ME .

PHYSICS LETTERS B, 1979, 87 (1-2) :114-116