Primordial magnetic fields from self-ordering scalar fields
نویسندگان
چکیده
منابع مشابه
Non-Gaussianity from self-ordering scalar fields
Daniel G. Figueroa, Robert R. Caldwell, and Marc Kamionkowski Department of Physics, CERN Theory Division, CH-1211 Geneva 23, Switzerland Instituto de Fı́sica Teórica UAM/CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA California Institute of Technology, Mail Code 350-17, Pasadena, California 9112...
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A primordial magnetic field may be generated during an inflationary period if conformal invariance is broken. We reexamine and generalize previous results about the magnetic field produced by couplings of the form RFμνF μν . We show that the amplitude of the magnetic field depends strongly on n. For adequate values of n the field produced can serve as seed for galactic magnetic fields. We also ...
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The hot plasma above the electroweak scale contains (hyper) charged scalar particles which are coupled to Abelian gauge fields. Scalars may interact with gravity in a non-conformally invariant way and thus their fluctuations can be amplified during inflation. These fluctuations lead to creation of electric currents and produce inhomogeneous distribution of charge density, resulting in the gener...
متن کاملPrimordial Magnetic Fields
The explanation of the observed galactic magnetic fields may require the existence of a primordial magnetic field. Such a field may arise during the early cosmological phase transitions, or because of other particle physics related phenomena in the very early universe reviewed here. The turbulent evolution of the initial, randomly fluctuating microscopic field to a large-scale macroscopic field...
متن کاملPrimordial Magnetic Fields
Large scale magnetic fields represent a triple point where cosmology, highenergy physics and astrophysics meet for different but related purposes. After reviewing the implications of large scale magnetic fields in these different areas, the rôle of primordial magnetic fields is discussed in various physical processes occurring prior to the decoupling epoch with particular attention to the big b...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/04/007