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• W3102304906 abstract "We study the evolution of phase-transition-generated cosmic magnetic fields coupled to the primeval cosmic plasma in the turbulent and viscous free-streaming regimes. The evolution laws for the magnetic energy density and the correlation length, both in the helical and the non-helical cases, are found by solving the autoinduction and Navier–Stokes equations in the mean-field approximation. Analytical results are derived in Minkowski spacetime and then extended to the case of a Friedmann universe with zero spatial curvature, both in the radiation- and the matter-dominated era. The three possible viscous free-streaming phases are characterized by a drag term in the Navier–Stokes equation which depends on the free-streaming properties of neutrinos, photons, or hydrogen atoms, respectively. In the case of non-helical magnetic fields, the magnetic intensity $$B$$ and the magnetic correlation length $$xi _B$$ evolve asymptotically with the temperature, $$T$$ , as $$B(T) simeq kappa _B (N_i v_i)^{varrho _1} (T/T_i)^{varrho _2}$$ and $$xi _B(T) simeq kappa _xi (N_i v_i)^{varrho _3} (T/T_i)^{varrho _4}$$ . Here, $$T_i$$ , $$N_i$$ , and $$v_i$$ are, respectively, the temperature, the number of magnetic domains per horizon length, and the bulk velocity at the onset of the particular regime. The coefficients $$kappa _B$$ , $$kappa _xi $$ , $$varrho _1$$ , $$varrho _2$$ , $$varrho _3$$ , and $$varrho _4$$ , depend on the index of the assumed initial power-law magnetic spectrum, $$p$$ , and on the particular regime, with the order-one constants $$kappa _B$$ and $$kappa _xi $$ depending also on the cutoff adopted for the initial magnetic spectrum. In the helical case, the quasi-conservation of the magnetic helicity implies, apart from logarithmic corrections and a factor proportional to the initial fractional helicity, power-like evolution laws equal to those in the non-helical case, but with $$p$$ equal to zero." @default.
• W3102304906 created "2020-11-23" @default.
• W3102304906 creator A5058125806 @default.
• W3102304906 date "2014-01-01" @default.
• W3102304906 modified "2023-09-24" @default.
• W3102304906 title "Evolution of primordial magnetic fields in mean-field approximation" @default.
• W3102304906 cites W1527478302 @default.
• W3102304906 cites W1570553508 @default.
• W3102304906 cites W1762993877 @default.
• W3102304906 cites W1965809899 @default.
• W3102304906 cites W1967037698 @default.
• W3102304906 cites W1967149282 @default.
• W3102304906 cites W1969379285 @default.
• W3102304906 cites W1969671456 @default.
• W3102304906 cites W1973605451 @default.
• W3102304906 cites W1974354721 @default.
• W3102304906 cites W1977395852 @default.
• W3102304906 cites W1977735316 @default.
• W3102304906 cites W1978970901 @default.
• W3102304906 cites W1980001467 @default.
• W3102304906 cites W1982632746 @default.
• W3102304906 cites W1984370115 @default.
• W3102304906 cites W1984817932 @default.
• W3102304906 cites W1988751589 @default.
• W3102304906 cites W1989234227 @default.
• W3102304906 cites W1989764096 @default.
• W3102304906 cites W1990029785 @default.
• W3102304906 cites W1991172418 @default.
• W3102304906 cites W1992162437 @default.
• W3102304906 cites W1992763762 @default.
• W3102304906 cites W1993237053 @default.
• W3102304906 cites W1993933138 @default.
• W3102304906 cites W1995675463 @default.
• W3102304906 cites W1997298727 @default.
• W3102304906 cites W1998963052 @default.
• W3102304906 cites W1999970756 @default.
• W3102304906 cites W2001661425 @default.
• W3102304906 cites W2002231673 @default.
• W3102304906 cites W2005154038 @default.
• W3102304906 cites W2005332353 @default.
• W3102304906 cites W2007951663 @default.
• W3102304906 cites W2009883520 @default.
• W3102304906 cites W2011838328 @default.
• W3102304906 cites W2012686081 @default.
• W3102304906 cites W2013224538 @default.
• W3102304906 cites W2013793204 @default.
• W3102304906 cites W2015370531 @default.
• W3102304906 cites W2016951470 @default.
• W3102304906 cites W2018024543 @default.
• W3102304906 cites W2018984913 @default.
• W3102304906 cites W2019177387 @default.
• W3102304906 cites W2020574515 @default.
• W3102304906 cites W2021748604 @default.
• W3102304906 cites W2022022896 @default.
• W3102304906 cites W2025917230 @default.
• W3102304906 cites W2027755785 @default.
• W3102304906 cites W2029849474 @default.
• W3102304906 cites W2030729573 @default.
• W3102304906 cites W2031113534 @default.
• W3102304906 cites W2031117379 @default.
• W3102304906 cites W2033630819 @default.
• W3102304906 cites W2037875147 @default.
• W3102304906 cites W2039990111 @default.
• W3102304906 cites W2046059652 @default.
• W3102304906 cites W2046901790 @default.
• W3102304906 cites W2047495882 @default.
• W3102304906 cites W2047650797 @default.
• W3102304906 cites W2047986777 @default.
• W3102304906 cites W2049246897 @default.
• W3102304906 cites W2051314207 @default.
• W3102304906 cites W2051548204 @default.
• W3102304906 cites W2052650966 @default.
• W3102304906 cites W2052752326 @default.
• W3102304906 cites W2053337182 @default.
• W3102304906 cites W2054849517 @default.
• W3102304906 cites W2055187594 @default.
• W3102304906 cites W2055213474 @default.
• W3102304906 cites W2056662961 @default.
• W3102304906 cites W2059646119 @default.
• W3102304906 cites W2061504199 @default.
• W3102304906 cites W2063092340 @default.
• W3102304906 cites W2063760423 @default.
• W3102304906 cites W2064752341 @default.
• W3102304906 cites W2066564733 @default.
• W3102304906 cites W2067773203 @default.
• W3102304906 cites W2068939329 @default.
• W3102304906 cites W2070599340 @default.
• W3102304906 cites W2077446475 @default.
• W3102304906 cites W2078353583 @default.
• W3102304906 cites W2079283815 @default.
• W3102304906 cites W2080087960 @default.
• W3102304906 cites W2081153290 @default.
• W3102304906 cites W2081165475 @default.
• W3102304906 cites W2081681491 @default.
• W3102304906 cites W2082328014 @default.
• W3102304906 cites W2083712058 @default.
• W3102304906 cites W2083889546 @default.
• W3102304906 cites W2084079203 @default.
• W3102304906 cites W2084173650 @default.
• W3102304906 cites W2084856503 @default.

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