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 transport processes
A comparison of the 1S-2S transitions of hydrogen and antihydrogen will yield a stringent test of CPT conservation. Necessarily, the antihydrogen atoms need to be trapped to perform high precision spectroscopy measurements. Therefore, an approximately 0.75 T deep neutral atom trap, equivalent to about 0.5 K for ground state (anti)hydrogen atoms, has been superimposed on a Penning-Malmberg trap ...
متن کاملSearches for Cosmic Antimatter
We know from experimental high energy physics that whenever matter is created, an equal amount of antimatter is also created. However, we live in a large region of the universe where the antimatter can not constitute more than a very small fraction of the total mass. The cosmic antimatter problem has been addressed since the beginning of modern cosmology, but no definite answer has been formula...
متن کاملAntimatter Research in Space
Two of the most compelling issues facing astrophysics and cosmology today are to understand the nature of the dark matter that pervades the universe and to understand the apparent absence of cosmological antimatter. For both issues, sensitive measurements of cosmic-ray antiprotons and positrons, in a wide energy range, are crucial. Many different mechanisms can contribute to antiprotons and pos...
متن کاملDark Energy from Antimatter
It is found that dark energy consists of gravitationally repulsive antimatter. The implications are discussed. A solar system proof is provided.
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2017
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2017.25