PROTECTING THE BARYON ASYMMETRY WITH THERMAL MASSES

被引：21

作者：

DAVIDSON, S ^{[1
]}

KAINULAINEN, K ^{[1
]}

OLIVE, KA ^{[1
]}

机构：

[1] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455

来源：

PHYSICS LETTERS B | 1994年 / 335卷 / 3-4期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(94)90361-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the evolution of baryon number B in the early universe under the influence of rapid sphaleron interactions and show that B will remain nonzero at all times even in the case of B - L = 0. This result arises due to thermal Yukawa interactions that cause nonidentical dispersion relations (thermal masses) for different lepton families. We point out the relevance of our result to the Affleck-Dine type baryogenesis.

引用

页码：339 / 344

页数：6

共 26 条

[21] ANOMALOUS ELECTROWEAK BARYON NUMBER NONCONSERVATION AND GUT MECHANISM FOR BARYOGENESIS [J].

KUZMIN, VA ;

RUBAKOV, VA ;

SHAPOSHNIKOV, ME .

PHYSICS LETTERS B, 1987, 191 (1-2) :171-173

[22] BARYOGENESIS VIA LEPTOGENESIS [J].

LUTY, MA .

PHYSICAL REVIEW D, 1992, 45 (02) :455-464

[23]

NELSON A, 1991, PHYS LETT B, V258, P45

[24] BIG-BANG NUCLEOSYNTHESIS REVISITED [J].

OLIVE, KA ;

SCHRAMM, DN ;

STEIGMAN, G ;

WALKER, TP .

PHYSICS LETTERS B, 1990, 236 (04) :454-460

[25] PRIMORDIAL NUCLEOSYNTHESIS REDUX [J].

WALKER, TP ;

STEIGMAN, G ;

SCHRAMM, DN ;

OLIVE, KA ;

KANG, HS .

ASTROPHYSICAL JOURNAL, 1991, 376 (01) :51-69

[26] EFFECTIVE FERMION MASSES OF ORDER-GT IN HIGH-TEMPERATURE GAUGE-THEORIES WITH EXACT CHIRAL INVARIANCE [J].

WELDON, HA .

PHYSICAL REVIEW D, 1982, 26 (10) :2789-2796

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