TY - JOUR
T1 - On the inflationary origin of primordial magnetic fields
AU - Cheng, Shu Lin
AU - Lee, Wolung
N1 - Publisher Copyright:
© 2014 The physical society of the republic of china.
PY - 2014
Y1 - 2014
N2 - Contrary to the conventional wisdom, we find that it is possible to generate coherent magnetic seed fields over a scale of 10 Mpc effciently via the spinodal instability during primordial inflation, provided that a fast-roll stage is involved before the inflaton enters into the slow-roll phase. However, the primordial magnetic field produced in such a mechanism is far too powerful to consistently fit into the energy constraint required by the scalar field driving the cosmic inflation.
AB - Contrary to the conventional wisdom, we find that it is possible to generate coherent magnetic seed fields over a scale of 10 Mpc effciently via the spinodal instability during primordial inflation, provided that a fast-roll stage is involved before the inflaton enters into the slow-roll phase. However, the primordial magnetic field produced in such a mechanism is far too powerful to consistently fit into the energy constraint required by the scalar field driving the cosmic inflation.
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U2 - 10.6122/CJP.20140408
DO - 10.6122/CJP.20140408
M3 - Article
AN - SCOPUS:84910055952
SN - 0577-9073
VL - 52
SP - 1422
EP - 1431
JO - Chinese Journal of Physics
JF - Chinese Journal of Physics
IS - 5
ER -