FERROMAGNETIC VACUUM AND GALACTIC MAGNETIC-FIELDS

被引：84

作者：

ENQVIST, K ^{[1
]}

OLESEN, P ^{[1
]}

机构：

[1] UNIV COPENHAGEN,NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK

来源：

PHYSICS LETTERS B | 1994年 / 329卷 / 2-3期

关键词：

D O I：

10.1016/0370-2693(94)90760-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Non-abelian gauge theories may have a ferromagnet-like vacuum with a non-zero magnetic field, which also exists at finite temperature. We argue that the formation of the ferromagnet-like vacuum at GUT scales gives rise to a Maxwell magnetic field imprinted on the comoving plasma. This results in a coherent magnetic field pertaining the whole universe, with a magnitude B(now) congruent-to 10(-14) G, which is of the correct size to serve as the seed field for the galactic dynamo. The seed field is thus a non-perturbative quantum effect.

引用

页码：195 / 198

页数：4

共 21 条

[1]

CHENG B, FERMILABPUB93259A PR

[2] EFFECTIVE LAGRANGIANS AT FINITE TEMPERATURE [J].

DITTRICH, W .

PHYSICAL REVIEW D, 1979, 19 (08) :2385-2390

[3]

ELMFORS P, NORDITA9378P PREPR

[4] GALACTIC DYNAMO AND NUCLEOSYNTHESIS LIMIT ON THE DIRAC NEUTRINO MASSES [J].

ENQVIST, K ;

OLESEN, P ;

SEMIKOZ, V .

PHYSICAL REVIEW LETTERS, 1992, 69 (15) :2157-2159

[5] NEUTRINO MASS AND THE ORIGIN OF GALACTIC MAGNETIC-FIELDS [J].

ENQVIST, K ;

SEMIKOZ, V ;

SHUKUROV, A ;

SOKOLOFF, D .

PHYSICAL REVIEW D, 1993, 48 (10) :4557-4561

[6] CHEMICAL-EQUILIBRIUM IN QCD GAS IN THE EARLY UNIVERSE [J].

ENQVIST, K ;

SIRKKA, J .

PHYSICS LETTERS B, 1993, 314 (3-4) :298-302

[7] ON PRIMORDIAL MAGNETIC-FIELDS OF ELECTROWEAK ORIGIN [J].

ENQVIST, K ;

OLESEN, P .

PHYSICS LETTERS B, 1993, 319 (1-3) :178-185

[8] PRIMORDIAL MAGNETIC-FIELDS FROM PSEUDOGOLDSTONE BOSONS [J].

GARRETSON, WD ;

FIELD, GB ;

CARROLL, SM .

PHYSICAL REVIEW D, 1992, 46 (12) :5346-5351

[9] MAGNETOHYDRODYNAMIC EFFECTS OF A 1ST-ORDER COSMOLOGICAL PHASE-TRANSITION [J].

HOGAN, CJ .

PHYSICAL REVIEW LETTERS, 1983, 51 (16) :1488-1491

[10]

KRONBERG PP, 1992, ASTROPHYS J, V387, P393

← 1 2 3 →