An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 2 Search : monopole
magnetic monopole
  تک‌قطبه‌ی ِ مغناتیسی   
takqotbe-ye meqnâtisi (#)

Fr.: monopôle magnétique   

A hypothetical particle that carries a single → magnetic pole, in contrast to magnets which are north-south pole pairs. These massive particles (billions of times heavier than the → proton) are required by grand unified theories(→ GUTs) to explain the actual matter content of the Universe, particularly the dominance of matter upon → antimatter. However, their existence contradicts → Gauss's law for magnetism.

magnetic; → monopole.

magnetic monopole problem
  پراسه‌ی ِ تک‌قطبه‌ی ِ مغناتیسی   
parâse-ye takqotbe-ye meqnâtisi

Fr.: problème du monopôle magnétique   

A problem concerning the compatibility of grand unified theories (→ GUTs) with standard cosmology. If standard cosmology was combined with grand unified theories, far too many → magnetic monopoles would have been produced in the early Universe. The → inflation hypothesis aims at explaining the observed scarcity of monopoles. The inflation has deceased their density by a huge factor.

magnetic; → monopole; → problem.