Monopoles in non-Abelian Born-Infeld-Higgs theory and Born-Infeld collapseстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] Dyadichev V. V., Gal'tsov D. V. Monopoles in non-abelian born-infeld-higgs theory and born-infeld collapse // Physical Review D. — 2002. — Vol. 65, no. 12. — P. 124026. Regular magnetic monopoles in the non-Abelian Born-Infeld-Higgs theory are known to exist in the region of the field strength parameter beta>beta(cr), bounded from below. Beyond this region, only pointlike (embedded Abelian) monopoles exist, and we show that the transition from the regular to singular structure is reminiscent of gravitational collapse. Near the threshold behavior is characterized by the rapidly increasing negative pressure, which typically arises in the high density non-Abelian Born-Infeld (NBI) matter. Another feature, shared by both the NBI and gravitating monopoles, is the existence of excited states, which can be thought of as bound states of monopoles and sphalerons. These are labeled by the number N of nodes of the Yang-Mills function. Their masses are greater than the mass of the ground state monopole, and they are expected to be unstable. The sequence of masses M-N rapidly converges to the mass of the embedded Abelian solution with a constant Higgs boson. The ratio of the sphaleron size to that of the monopole grows with decreasing beta, and, at the same time, both fall down until the solutions cease to exist, again exhibiting a collapse to the point-like monopole. The results are presented and compared both for the ordinary and the symmetrized trace NBI actions. [ DOI ]

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