NEUTRINO OSCILLATIONS IN THE EARLY UNIVERSE

被引：62
作者：
KOSTELECKY, VA
PANTALEONE, J
SAMUEL, S
机构：
[1] Physics Department, Indiana University, Bloomington
来源：
PHYSICS LETTERS B | 1993年 / 315卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(93)90156-C
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Numerical studies are performed for neutrino oscillations for t > 1/3 seconds after the big bang. The effects of electron, positron and neutrino backgrounds are properly included. Flavor evolution of the neutrino background is dominantly smooth. However, in a certain parameter region, coherent undamped oscillations of the neutrino background are possible. In addition, neutrino CP asymmetry is found to be considerably smaller than expected. Reasons are provided for the above effects and some physical implications are discussed.
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页码：46 / 50
页数：5
相关论文
共 24 条
  • [1] NONEQUILIBRIUM NEUTRINO STATISTICAL-MECHANICS IN THE EXPANDING UNIVERSE
    DODELSON, S
    TURNER, MS
    [J]. PHYSICAL REVIEW D, 1992, 46 (08): : 3372 - 3387
  • [2] DOLGOV AD, 1981, SOV J NUCL PHYS+, V33, P700
  • [3] NONEQUILIBRIUM EFFECT OF THE NEUTRINO DISTRIBUTION ON PRIMORDIAL HELIUM SYNTHESIS
    DOLGOV, AD
    FUKUGITA, M
    [J]. PHYSICAL REVIEW D, 1992, 46 (12): : 5378 - 5382
  • [4] REFRACTION AND OSCILLATIONS OF NEUTRINOS IN THE EARLY UNIVERSE
    ENQVIST, K
    KAINULAINEN, K
    MAALAMPI, J
    [J]. NUCLEAR PHYSICS B, 1991, 349 (03) : 754 - 790
  • [5] KOLB EW, 1990, EARLY UNIVERSE
  • [6] NEUTRINO OSCILLATIONS IN MATTER
    KUO, TK
    PANTALEONE, J
    [J]. REVIEWS OF MODERN PHYSICS, 1989, 61 (04) : 937 - 979
  • [7] IMPLICATIONS OF THE MIKHEYEV-SMIRNOV-WOLFENSTEIN (MSW) MECHANISM OF AMPLIFICATION OF NEUTRINO OSCILLATIONS IN MATTER
    LANGACKER, P
    PETCOV, ST
    STEIGMAN, G
    TOSHEV, S
    [J]. NUCLEAR PHYSICS B, 1987, 282 (3-4) : 589 - 609
  • [8] COHERENT DETECTOR FOR LOW-ENERGY NEUTRINOS
    LEWIS, RR
    [J]. PHYSICAL REVIEW D, 1980, 21 (03): : 663 - 668
  • [9] RESONANT OSCILLATIONS OF THE NEUTRINO IN MATTER
    MIKHEYEV, SP
    SMIRNOV, AY
    [J]. USPEKHI FIZICHESKIKH NAUK, 1987, 153 (01): : 3 - 58
  • [10] NEUTRINO DISPERSION AT FINITE TEMPERATURE AND DENSITY
    NOTZOLD, D
    RAFFELT, G
    [J]. NUCLEAR PHYSICS B, 1988, 307 (04) : 924 - 936
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