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We show that the evolution of magnetic fields in a primordial plasma, filled with Standard Model particles, at temperatures T > 10 MeV is strongly affected by the quantum chiral anomaly -- an effect that has been neglected previously.…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-19 Alexey Boyarsky , Juerg Froehlich , Oleg Ruchayskiy

The presence of asymmetry between fermions of opposite handedness in plasmas of relativistic particles can lead to exponential growth of a helical magnetic field via a small-scale chiral dynamo instability known as the chiral magnetic…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-23 Axel Brandenburg , Jennifer Schober , Igor Rogachevskii , Tina Kahniashvili , Alexey Boyarsky , Jurg Frohlich , Oleg Ruchayskiy , Nathan Kleeorin

It is known that cosmic magnetic field, if present, can generate anisotropic stress in the plasma and hence, can act as a source of gravitational waves. These cosmic magnetic fields can be generated at very high temperature, much above…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-25 Sampurn Anand , Jitesh R. Bhatt , Arun Kumar Pandey

We analyze the chiral magnetic effect in a homogeneous neutral plasma from the point of view of energy conservation, and construct an effective potential for the growth of maximally helical perturbations of the electromagnetic field. We…

High Energy Physics - Phenomenology · Physics 2017-07-19 David B. Kaplan , Sanjay Reddy , Srimoyee Sen

In this paper, we study analytically the process of external generation and subsequent free evolution of the lepton chiral asymmetry and helical magnetic fields in the early hot universe. This process is known to be affected by the Abelian…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-18 Maksym Sydorenko , Oleksandr Tomalak , Yuri Shtanov

We demonstrate that in a chiral plasma subject to an external magnetic field, the chiral vortical effect can induce a new type of magnetohydrodynamic instability which we refer to as the {\it chiral magnetovortical instability}. This…

Nuclear Theory · Physics 2023-07-14 Shuai Wang , Xu-Guang Huang

The cosmic rays non-resonant streaming instability is believed to be the source of substantial magnetic field amplification. In this work we investigate the effects of the ambient plasma temperature on the instability and derive analytical…

High Energy Astrophysical Phenomena · Physics 2020-11-18 Alexis Marret , Andrea Ciardi , Roch Smets , Julien Fuchs

In this work the influence of the chiral anomaly effect on the evolution of magnetohydrodynamic turbulence was studied. We argue that in the early universe, before the electroweak symmetry breaking, and for temperatures high enough such…

Cosmology and Nongalactic Astrophysics · Physics 2017-09-12 Petar Pavlović , Natacha Leite , Günter Sigl

In the primordial plasma, at temperatures above the scale of electroweak symmetry breaking, the presence of chiral asymmetries is expected to induce the development of helical hypermagnetic fields through the phenomenon of chiral plasma…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-10 Axel Brandenburg , Emma Clarke , Tina Kahniashvili , Andrew J. Long , Guotong Sun

In the standard model of particle physics, the chiral anomaly can occur in relativistic plasmas and plays a role in the early Universe, protoneutron stars, heavy-ion collisions, and quantum materials. It gives rise to a magnetic instability…

Plasma Physics · Physics 2024-02-07 Jennifer Schober , Igor Rogachevskii , Axel Brandenburg

Magnetic field is unstable in a medium with time-independent chiral conductivity. Owing to the chiral anomaly, the electromagnetic field and the medium exchange helicity which results in time-evolution of the chiral conductivity. Using the…

Nuclear Theory · Physics 2018-03-14 Kirill Tuchin

We consider the generation and evolution of magnetic field in a primordial plasma at temperature T < 1 MeV in presence of asymmetric neutrino background i.e. the number densities of right- handed and left-handed neutrinos are not same.…

High Energy Physics - Phenomenology · Physics 2017-05-31 Jitesh R. Bhatt , Manu George

In an electron-positron plasma, an imbalance in the number of right- and left-chiral particles can lead to the growth of a helical magnetic field through a phenomenon called the chiral plasma instability (CPI). In the early universe,…

High Energy Physics - Phenomenology · Physics 2025-12-11 Murman Gurgenidze , Andrew J. Long , Alberto Roper Pol , Axel Brandenburg , Tina Kahniashvili

Initial states of dense matter with nonzero electron chiral imbalance could potentially give rise to strong magnetic fields through chiral plasma instability. Previous work indicated that unless chiral chemical potential is as large as the…

High Energy Physics - Phenomenology · Physics 2026-05-01 Srimoyee Sen , Varun Vaidya

We present a first principles study of chiral plasma instabilities and the onset of chiral turbulence in QED plasmas far from equilibrium. By performing classical-statistical lattice simulations of the microscopic theory, we show that the…

High Energy Physics - Phenomenology · Physics 2020-08-06 Mark Mace , Niklas Mueller , Sören Schlichting , Sayantan Sharma

The chiral magnetic effect emerges from a miroscopic level, and its interesting consequences have been discussed in the dynamics of the early universe, neutron stars and quark-gluon plasma. An instability is caused by anomalous electric…

High Energy Astrophysical Phenomena · Physics 2019-03-01 Yasufumi Kojima , Yuri Miura

This dissertation studies the quantum anomalous effects on the description of high energy electrodynamics. We argue that on the temperatures comparable to the electroweak scale, characteristic for the early Universe and objects like neutron…

High Energy Physics - Phenomenology · Physics 2021-02-23 Petar Pavlović

We study the mechanism responsible for the onset of instabilities in a chiral phase transition at nonzero temperature and baryon chemical potential. As a low-energy effective model, we consider an expanding relativistic plasma of quarks…

Nuclear Theory · Physics 2007-05-23 C. E. Aguiar , E. S. Fraga , T. Kodama

The time-evolution of the magnetic field in hot homogeneous nuclear matter has two qualitatively different stages separated by the sphaleron transition time $\tau_c$. At early times the axial chemical potential and the corresponding chiral…

High Energy Physics - Phenomenology · Physics 2020-07-22 Kirill Tuchin

We study the effect of hotter or colder particles on the evolution of the chiral magnetic field in the early universe. We are interested in the temperature dependent term in the chiral vortical effect. There are no changes in the magnetic…

High Energy Physics - Phenomenology · Physics 2017-10-10 Tamal K. Mukherjee , Soma Sanyal
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