Antimatter and the Moon
نویسندگان
چکیده
منابع مشابه
Cosmological Matter-antimatter Asymmetry and Antimatter in the Universe
Prediction of antimatter by Dirac (1928) and quick subsequent discovery of the first antimatter particle, positron, by Anderson 2 (1933) are among greatest scientific achievements of XX century. Discovery of antiproton 22 years later 3 was the next step which had opened a whole new world of antiparticles. Now for (almost) every elementary particle a corresponding antiparticle has also been obse...
متن کاملAntimatter in the Universe
The world in our neighbourhood, as we observe it, is 100% charge asymmetric. We see only matter and any considerable amount of antimatter nearby is excluded [1,2]. A small number of antiprotons and positrons in the cosmic rays (to say nothing of those produced in accelerators) can be prescribed to the secondary origin. Charge asymmetry in terms of visible massive matter defined as/3B = (riB -nf...
متن کاملQFT, Antimatter, and Symmetry
A systematic analysis is made of the relations between the symmetries of a classical field and the symmetries of the one-particle quantum system that results from quantizing that field in regimes where interactions are weak. The results are applied to gain a greater insight into the phenomenon of antimatter.
متن کاملBaryogenesis and Cosmological Antimatter
Possible mechanisms of baryogenesis are reviewed. Special attention is payed to those which allow for creation of astronomically significant domains or objects consisting of antimatter. Observational manifestations of cosmological antimatter are discussed.
متن کاملThe Asymmetry between Matter and Antimatter∗
This is an article intended for publication in Physics Today. ∗Work supported by Department of Energy contract DE–AC03–76SF00515. We live in a Universe dominated by matter, containing very little antimatter. The laws of physics, however, seem to include an almost exact symmetry between matter and antimatter. The near symmetry between matter and antimatter is CP, that is charge conjugation (C) t...
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ژورنال
عنوان ژورنال: Nature
سال: 1994
ISSN: 0028-0836,1476-4687
DOI: 10.1038/367025a0