Family unification, exotic states and magnetic monopoles

Kephart, Thomas W.; Shafi, Qaisar

doi:10.1016/s0370-2693(01)01187-x

Cited by 59 publications

(55 citation statements)

References 26 publications

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“…Intermediate Mass Monopoles (IMM) also would survive as relics of the early Universe [16], and be stable. Because IMMs would be produced after inflation, their number would not be reduced by inflationary mechanisms.…”

Section: A History Of Gut Magnetic Monopolesmentioning

confidence: 99%

Status of Searches for Magnetic Monopoles

Patrizii

Spurio

2015

Annu. Rev. Nucl. Part. Sci.

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The searches for magnetic monopoles (Ms) is a fascinating interdisciplinary field with implications in fundamental theories, in particle physics, astrophysics, and cosmology. The quantum theory of Ms and its consistency with electrodynamics was derived by P.A.M. Dirac. This marked the start of the searches for classical monopoles at every new accelerator, up to the LHC. Magnetic monopoles are required by Grand Unification Theories, but unlike classical monopoles they would be incredibly massive, out of the reach of any conceivable accelerator. Large efforts have been made to search for them in the cosmic radiation as relic particles from the early Universe in the widest range of mass and velocity experimentally accessible.In this paper the status of the searches for classical Ms at accelerators, for GUT, superheavy Ms in the penetrating cosmic radiation and for Intermediate Mass Ms at high altitudes is discussed, with emphasis on the most recent results and future perspectives.

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Section: A History Of Gut Magnetic Monopolesmentioning

confidence: 99%

Status of Searches for Magnetic Monopoles

Patrizii

Spurio

2015

Annu. Rev. Nucl. Part. Sci.

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“…Model also possess superheavy dark matter candidates (see, e.g., [61][62][63][64][65][66][67][68][69][70][71]). Since there are many scalar field degrees of freedom in typical BSMs, the possibility of identifying one of these scalars with σ is also plausible.…”

Section: Fermion Isocurvature Modelmentioning

confidence: 99%

Fermionic isocurvature perturbations

2015

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Isocurvature perturbations in the inflationary literature typically involve quantum fluctuations of bosonic field degrees of freedom. In this work, we consider isocurvature perturbations from fermionic quantum fluctuations during inflation. When a stable massive fermion is coupled to a non-conformal sector different from the scalar metric perturbations, observably large amplitude scale invariant isocurvature perturbations can be generated. In addition to the computation of the isocurvature two-point function, an estimate of the local non-Gaussianities is also given and found to be promising for observations in a corner of the parameter space. The results provide a new class of cosmological probes for theories with stable massive fermions. On the technical side, we explicitly renormalize the composite operator in curved spacetime and show that gravitational Ward identities play an important role in suppressing certain contributions to the fermionic isocurvature perturbations.

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“…In the case where monopoles were created at the GUT phase transition with a mass scale K $ 10 15 GeV, the inflationary scenario strongly dilutes the monopole density, thereby solving the monopole overdensity problem [20]. For monopoles produced in later phase transitions in the early Universe below K $ 10 11 GeV, larger fluxes of monopoles with mass 10 7 À 10 13 GeV are expected [21].…”

Section: Magnetic Monopolesmentioning

confidence: 99%

Search for relativistic magnetic monopoles with the ANTARES neutrino telescope

Adrián-Martínez

Aguilar

Samarai

et al. 2012

Astroparticle Physics

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a b s t r a c tMagnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3 Â 10 À17 and 8.9 Â 10 À17 cm À2 s À1 sr À1 for monopoles with velocity b P 0.625.

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Family unification, exotic states and magnetic monopoles

Cited by 59 publications

References 26 publications

Status of Searches for Magnetic Monopoles

Status of Searches for Magnetic Monopoles

Fermionic isocurvature perturbations

Search for relativistic magnetic monopoles with the ANTARES neutrino telescope

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