Magnetic Monopoles in Grand Unified Theories
نویسنده
چکیده
We suggest that the magnetic monopoles predicted by grand unified theories would not be produced in significant numbers if electromagnetic gauge invariance is spontaneously broken when the temperature T is greater than Tc 2 1 TeV. A model possessing this behavior is displayed and the cosmological implications are discussed. Submitted to Physical Review Letters * Work supported by the Department of Energy under contract numbers EY-76-C-02-3071 and DE-AC03-76SF00515.
منابع مشابه
Magnetic monopoles from gauge theory phase transitions
Thermal fluctuations of the gauge field lead to monopole formation at the grand unified phase transition in the early universe, even if the transition is merely a smooth crossover. The dependence of the produced monopole density on various parameters is qualitatively different from theories with global symmetries, and the monopoles have a positive correlation at short distances. The number dens...
متن کاملAre magnetic monopoles hadrons?
The charges of magnetic monopoles are constrained to a multiple of times the inverse of the elementary unit electric charge. In the standard model, quarks have fractional charge, raising the question of whether the basic magnetic monople unit is a multiple of or three times that. A simple lattice construction shows how a magnetic monopole of the lower strength is possible if it interacts with g...
متن کاملSuppression of Superheavy Magnetic Monopoles in Grand Unified Theories
The superheavy magnetic monopoles predicted by grand unified theories would not be produced in significant numbers if electromagnetic gauge invariance is spontaneously broken when the temperature T is greater than T, 2 1 TeV. Grand unified theories predict the existence of superheavy magnetic monopoles.1-7 These monopoles are of the type discovered by 't Hooft and Polyakov.6 They exist if a sem...
متن کاملLectures on Cosmic Topological Defects
These lectures review certain topological defects and aspects of their cosmology. Unconventional material includes brief descriptions of electroweak defects, the structure of domain walls in non-Abelian theories, and the spectrum of magnetic monopoles in SU(5) Grand Unified theory.
متن کاملBinding of Magnetic Monopoles and Atomic Nuclei
The formulation of Grand Unified Theories, which allow magnetic monopole-like solutions [1], has stimulated a wide interest in the search of magnetic monopoles and recently evidence has been claimed of their detection [2]. In view of planning further efforts to confirm the existence of magnetic monopoles, it is useful to know the behaviour of these particles when they reach Earth. With this pur...
متن کامل