Primordial magnetic fields and formation of molecular hydrogen
نویسندگان
چکیده
منابع مشابه
Primordial 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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A primordial magnetic field could be responsible for the observed magnetic fields of the galaxies. One possibility is that such a primordial field is generated at the electroweak phase transition because of the fluctuations in the Higgs field gradients. I describe a statistical averaging procedure which gives rise to a field of a correct magnitude. Another possibility, where the Yang-Mills vacu...
متن کاملPrimordial Magnetic Fields and Causality
We discuss the implications of causality on a primordial magnetic field. We show that the residual field on large scales is much more suppressed than usually assumed, and that a helical component is even more reduced. Due to this strong suppression, even maximal primordial fields generated at the electroweak phase transition can just marginally seed the fields in clusters but they cannot leave ...
متن کاملPrimordial magnetic fields at preheating
Using lattice techniques we investigate the generation of long range cosmological magnetic fields during a cold electroweak transition. We will show how magnetic fields arise, during bubble collisions, in the form of magnetic strings. We conjecture that these magnetic strings originate from the alignment of magnetic dipoles associated with EW sphaleron-like configurations. We also discuss the e...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.13302.x