Magnetic Monopoles in the Early Universe: Pair Production

Astrophysics ◽  
2003 ◽  
Vol 46 (4) ◽  
pp. 422-428 ◽  
Author(s):  
V. K. Dubrovich ◽  
N. A. Sushko
Keyword(s):  
Pair Production ◽  
Early Universe ◽  
Magnetic Monopoles

scholarly journals Diffractive Physics at the LHC

2019 ◽  
Vol 64 (8) ◽  
pp. 772
Author(s):  
M. Trzebiński
Keyword(s):  
Beyond Standard Model ◽  
Elastic Scattering ◽  
Standard Model ◽  
Pair Production ◽  
Magnetic Monopoles ◽  
Pomeron Exchange ◽  
Gauge Couplings ◽  
Meson Pair

Diffractive processes possible to be measured at the LHC are listed and briefly discussed. This includes soft (elastic scattering, exclusive meson pair production, diffractive bremsstrahlung) and hard (single and double Pomeron exchange jets, y +jet, W/Z, jet-gap-jet, exclusive jets) processes as well as Beyond Standard Model phenomena (anomalous gauge couplings, magnetic monopoles).

Identification of magnetic monopoles via electron-positron pair production

1987 ◽  
Vol 197 (1-2) ◽  
pp. 277-280 ◽  
Author(s):  
Elena Papageorgiu ◽  
Leo Stodolsky
Keyword(s):  
Pair Production ◽  
Magnetic Monopoles ◽  
Electron Positron ◽  
Electron Positron Pair

MONOPOLE ACCRETION BY COSMIC STRINGS

1990 ◽  
Vol 05 (17) ◽  
pp. 1313-1320
Author(s):  
A.M. MATHESON ◽  
D.M. UPTON
Keyword(s):  
Black Holes ◽  
Neutron Star ◽  
Early Universe ◽  
Cosmic String ◽  
Cosmic Strings ◽  
Magnetic Monopoles ◽  
Accretion Process

We study the accretion of super-heavy magnetic monopoles around cosmic string loops in the very early universe. For sufficiently massive monopoles, a possible result of this accretion process is the formation of monopole-black holes, leading ultimately to a monopole-to-photon ratio comparable to the limits required by neutron star observations.

MODEL FOR EFFICIENT MONOPOLE ANNIHILATION AND BARYOGENESIS

1995 ◽  
Vol 10 (03) ◽  
pp. 227-233 ◽  
Author(s):  
SUBIR MOHAN
Keyword(s):  
Transition Temperature ◽  
Early Universe ◽  
Higgs Doublet ◽  
Magnetic Monopoles ◽  
Coupling Constants ◽  
Group Symmetry ◽  
Scalar Coupling ◽  
Grand Unification ◽  
Temperature Scales ◽  
The Right

We present a model for efficient annihilation of magnetic monopoles which is accomplished by breaking the electromagnetic gauge invariance for an appropriate range of temperature during the radiation dominated epoch of the early universe. Except for the brief period when electromagnetism is broken, the gauge-group symmetry is SU (3)c × SU (2)L × U (1)Y between the grand unification and electroweak transition temperature scales. The model consists of a standard Higgs doublet, a charged singlet and an uncharged singlet, and it is shown to work for a very general set of parameters with none of the scalar coupling constants being, necessarily, either too large or too small. The uncharged singlet can easily give adequately large Majorana mass to the right-handed neutrinos making baryogenesis possible through the decay of heavy right-handed neutrinos and sphaleron interactions.

scholarly journals Fermion production by a dependent of time electric field in de Sitter universe

2017 ◽  
Vol 32 (36) ◽  
pp. 1750208 ◽  
Author(s):  
Mihaela-Andreea Băloi ◽  
Cosmin Crucean
Keyword(s):  
Electric Field ◽  
Pair Production ◽  
External Electric Field ◽  
Early Universe ◽  
Total Probability ◽  
De Sitter ◽  
Expansion Factor ◽  
Gravitational Fields ◽  
De Sitter Universe ◽  
Strong Gravitational Fields

Fermion production in external electric field on de Sitter expanding universe is analyzed. The amplitude and probability of pair production are computed. We obtain from our calculations that the modulus of the momentum is no longer conserved. The rate of pair production in an electric field is found to be important in the early universe when the expansion factor was large comparatively with the particle mass. A computation of the total probability is presented in a particular case and the result proves to be nonvanishing only in strong gravitational fields.

ON PRODUCTION OF MAGNETIC MONOPOLES VIA γγ FUSION AT HIGH ENERGY pp COLLISIONS

2006 ◽  
Vol 21 (38) ◽  
pp. 2873-2880 ◽  
Author(s):  
YU. KUROCHKIN ◽  
I. SATSUNKEVICH ◽  
DZ. SHOUKAVY ◽  
N. RUSAKOVICH ◽  
YU. KULCHITSKY
Keyword(s):  
Pair Production ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
High Energy ◽  
Magnetic Monopoles ◽  
Pp Collisions ◽  
Pair Production Cross Section

We consider the production of magnetic monopoles via γγ fusion at high energy pp collisions. In the assumption that the monopole spin is equal 0, 1/2, 1, the monopole–antimonopole pair production cross-section by this mechanism at LHC energies is estimated and analyzed.

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