منابع مشابه
Antimatter 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 کاملThe Quantum Statistical Mechanical Theory of Transport Processes
A new derivation of the quantum Boltzmann transport equation for the Fermion system from the quantum time evolution equation for the wigner distribution function is presented. The method exhibits the origin of the time - irreversibility of the Boltzmann equation. In the present work, the spin dependent and indistinguishibility of particles are also considered.
متن کاملCosmological 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 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...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2010
ISSN: 1742-6596
DOI: 10.1088/1742-6596/257/1/012004