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Dimοpoulos, George; Kostoula, Olga; Logotheti, Maria; Stratis, Athanasios; Rasidakis, A; Legakis, N.I.; Velegraki, Aristea

doi:10.1186/cc1797

Cited by 1 publication

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References 3 publications

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“…The subsequent evolution of the Qballs then critically depends upon the mechanism how supersymmetry is broken in the theory [11]. If SUSY breaking occurs via a gauge mediated mechanism [12] the potential for the scalar condensate is completely flat (m S behaves as φ −2 for large enough φ in this scenario) and the resulting Q-balls can have huge charges [8,13]. For a large enough Q-ball with no lepton number, all decay modes can be excluded and the Q-ball can be completely stable.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical properties of Q-balls

Multamäki

Vilja

2000

Nuclear Physics B

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Stable non-topological solitons, Q-balls, are studied using analytical and numerical methods. Three different physically interesting potentials that support Q-ball solutions are considered: two typical polynomial potentials and a logarithmic potential inspired by supersymmetry. It is shown that Q-balls in these potentials exhibit different properties in the thick-wall limit where the charge of a Q-ball is typically considerably smaller than in the thin-wall limit. Analytical criteria are derived to check whether stable Q-balls exists in the thick-wall limit for typical potentials. Q-ball charge, energy and profiles are presented for each potential studied. Evaporation rates are calculated in the perfect thin-wall limit and for realistic Q-ball profiles. It is shown that in each case the evaporation rate increases with decreasing charge.Comment: 25 page

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Section: Introductionmentioning

confidence: 99%