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A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales $ \tilde \, 10^4 \,…

等离子体物理 · 物理学 2015-06-22 A. Stockem , T. Grismayer , R. A. Fonseca , L. O. Silva

We present a theory of the generation of magnetic seed fields in bubble collisions during a first-order electroweak phase transition (EWPT) possible for some choices of parameters in the minimal supersymmetric Standard Model. The theory…

宇宙学与河外天体物理 · 物理学 2010-01-22 Trevor Stevens , Mikkel B. Johnson

We study the generation of magnetic fields during preheating within an scenario of hybrid inflation at the electroweak (EW) scale. We find that the non-perturbative and strongly out-of-equilibrium process of magnetic field production occurs…

高能物理 - 唯象学 · 物理学 2008-11-26 Andres Diaz-Gil , Juan Garcia-Bellido , Margarita Garcia Perez , Antonio Gonzalez-Arroyo

Three-dimensional electron phase space holes are shown to be positive charges on the plasma background which produce a radial electric field and force the trapped electron component into an azimuthal drift. In this way electron holes…

空间物理 · 物理学 2012-04-20 R. A. Treumann , W. Baumjohann

We consider the evolution of primordial magnetic fields generated during cosmological, electroweak or QCD, phase transitions. We assume that the magnetic field generation can be described as an injection of magnetic energy to cosmological…

宇宙学与河外天体物理 · 物理学 2013-04-24 Tina Kahniashvili , Alexander G. Tevzadze , Axel Brandenburg , Andrii Neronov

In this letter we show that magnetic fields generated at the electroweak phase transition are most likely too weak to explain the void magnetic fields apparently observed today unless they have considerable helicity. We show that, in the…

宇宙学与河外天体物理 · 物理学 2016-01-15 Jacques M. Wagstaff , Robi Banerjee

We study the generation of large scale primordial magnetic fields by a cosmological phase transition during the radiation dominated era. The setting is a theory of N charged scalar fields coupled to an abelian gauge field, that undergoes a…

天体物理学 · 物理学 2007-05-23 D. Boyanovsky , H. J. de Vega , M. Simionato

We perform the three dimensional lattice simulation of the magnetic field and gravitational wave productions from bubble collisions during the first-order electroweak phase transition. Except that of the gravitational wave, the power-law…

宇宙学与河外天体物理 · 物理学 2021-08-24 Yuefeng Di , Jialong Wang , Ruiyu Zhou , Ligong Bian , Rong-Gen Cai , Jing Liu

We describe the generation of the electric current flowing along the external magnetic field in the system of massive charged fermions, possessing anomalous magnetic moments and electroweakly interacting with background matter. This current…

高能物理 - 唯象学 · 物理学 2019-06-07 Maxim Dvornikov

The generation of the observed baryon asymmetry may have taken place during the electroweak phase transition, thus involving physics testable at LHC, a scenario dubbed electroweak baryogenesis. In this paper we point out that the magnetic…

高能物理 - 唯象学 · 物理学 2011-10-24 Andrea De Simone , Germano Nardini , Mariano Quiros , Antonio Riotto

Spontaneous CP violation during the electroweak phase transition can induce a twisting of the magnetic field configuration of Standard Model dumbbells, resulting in sizable intergalactic magnetic fields and a small baryon asymmetry, in…

高能物理 - 唯象学 · 物理学 2025-09-24 Valerie Domcke , Yohei Ema , Teerthal Patel

We investigate the scattering of fermions off domain walls at the electroweak phase transition in presence of a magnetic field. We consider both the bubble wall and the kink domain wall. We derive and solve the Dirac equation for fermions…

天体物理学 · 物理学 2011-07-19 P. Cea , G. L. Fogli , L. Tedesco

We have considered the possibility of a slowly rotating wormhole surrounded by a cloud of charged particles. Due to slow rotation of the wormhole, the charged particles are dragged thereby producing an electromagnetic field. We have…

天体物理学 · 物理学 2014-11-18 Mubasher Jamil

The nature and origin of turbulence and magnetic fields in the intergalactic space are important problems that are yet to be understood. We propose a scenario in which turbulent flow motions are induced via the cascade of the vorticity…

天体物理学 · 物理学 2009-11-13 Dongsu Ryu , Hyesung Kang , Jungyeon Cho , Santabrata Das

The generation and evolution of astrophysical magnetic fields occurs largely through the action of turbulence. In many situations, the magnetic field is strong enough to influence many important properties of turbulence itself. Numerical…

天体物理学 · 物理学 2007-05-23 Ellen G. Zweibel , Fabian Heitsch , Yuhong Fan

We study the evolution of QCD phase transition-generated magnetic fields in freely decaying MHD turbulence of the expanding Universe. We consider a magnetic field generation model that starts from basic non-perturbative QCD theory and…

宇宙学与河外天体物理 · 物理学 2012-10-18 Alexander G. Tevzadze , Leonard Kisslinger , Axel Brandenburg , Tina Kahniashvili

We estimate the degree of circular polarization for the gravitational waves generated during the electroweak and QCD phase transitions from the kinetic and magnetic helicity generated by bubble collisions during those cosmological phase…

宇宙学与河外天体物理 · 物理学 2015-08-19 Leonard Kisslinger , Tina Kahniashvili

The generation of magnetic field in an electrically conducting fluid generally involves the complicated nonlinear interaction of flow turbulence, rotation and field. This dynamo process is of great importance in geophysics, planetary…

流体动力学 · 物理学 2021-10-04 Steven Tobias

We investigate the effects of a large-scale background hypermagnetic field on the electroweak phase transition. We propose a model in which an effective weak angle varies during the electroweak phase transition and upon its use we show…

高能物理 - 唯象学 · 物理学 2022-05-31 H. Abedi , M. Ahmadvand , S. S. Gousheh

We study the generation of gravitational waves in the electroweak phase transition. We consider a few extensions of the Standard Model, namely, the addition of scalar singlets, the minimal supersymmetric extension, and the addition of TeV…

宇宙学与河外天体物理 · 物理学 2012-10-19 Leonardo Leitao , Ariel Megevand , Alejandro D. Sanchez