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We have determined the physical mechanism responsible for the plasma instabilities, which was first found by Ramani and Laval (1978), associated with anisotropic velocity distributions induced by the temperature gradient in which there are…

Astrophysics · Physics 2009-11-10 Nobuhiro Okabe , Makoto Hattori

We study wave instability in an collisionless, rarefied hot plasma (e.g. solar wind or corona). We consider the anisotropy produced by the magnetic field, when the thermal gas pressures across and along the field become unequal. We apply…

Astrophysics · Physics 2009-11-14 N. S. Dzhalilov , V. D. Kuznetsov , J. Staude

We study the contribution of temperature-dependent chiral vortical effect to the generation and evolution of the hypermagnetic fields and the matter-antimatter asymmetries, in the symmetric phase of the early Universe, in the temperature…

High Energy Physics - Phenomenology · Physics 2021-06-30 S. Abbaslu , S. Rostam Zadeh , M. Mehraeen , S. S. Gousheh

We reexamine generation of the primordial magnetic fields, at temperature $T>80$TeV, by applying a consistent kinetic theory framework which is suitably modified to take the quantum anomaly into account. The modified kinetic equation can…

General Relativity and Quantum Cosmology · Physics 2016-09-01 Arun Kumar Pandey , Jitesh R. Bhatt

The microscopic quantum nature of elementary particles, chirality, leads to macroscopic phenomena like the chiral anomaly, chiral magnetic effect, and chiral plasma instability. We review recent progress of the studies of these chiral…

Cosmology and Nongalactic Astrophysics · Physics 2022-12-22 Kohei Kamada , Naoki Yamamoto , Di-Lun Yang

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

We study the generation and evolution of magnetic field in the presence of chiral imbalance and gravitational anomaly which gives an additional contribution to the vortical current. The contribution due to gravitational anomaly is…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-21 Sampurn Anand , Jitesh R. Bhatt , Arun Kumar Pandey

We investigate the gravitational wave production induced by the primordial magnetic fields in a parity-violating magnetogenesis model. It is shown that the gravitational waves detectable by LISA, DECIGO or BBO and the magnetic fields strong…

Cosmology and Nongalactic Astrophysics · Physics 2021-03-17 So Okano , Tomohiro Fujita

We consider a scenario with axions/axion-like particles Chern-Simons gravity coupling, such that gravitational waves can be produced directly from axion wave parametric resonance in the early universe after inflation. This axion gravity…

High Energy Physics - Phenomenology · Physics 2024-04-09 Mingqiu Li , Sichun Sun , Qi-Shu Yan , Zhijie Zhao

We show how the temperature-dependent chiral vortical effect can generate hypermagnetic fields and matter-antimatter asymmetries, in the symmetric phase of the early Universe, in the temperature range $100\mbox{GeV} \le T\le 10\mbox{TeV}$,…

High Energy Physics - Phenomenology · Physics 2025-04-11 S. Abbaslu , A. Rezaei , S. Rostam Zadeh , S. S. Gousheh

We study the hydrodynamic regime of chiral plasmas at high temperature. We find a new type of gapless collective excitation induced by chiral effects in an external magnetic field. This is a transverse wave, and it is present even in…

High Energy Physics - Theory · Physics 2015-10-07 Naoki Yamamoto

We discuss the (spontaneous) chiral symmetry breaking in a strongly coupled anisotropic quark-gluon plasma (QGP) in the presence of the magnetic field, using holography. The physical quantities related to the chiral symmetry breaking…

High Energy Physics - Theory · Physics 2014-03-26 Mohammad Ali-Akbari , Hajar Ebrahim

We study the evolution of magnetic fields in turbulent hot plasma of the early Universe accounting for the chiral magnetic effect. The magnetohydrodynamic turbulence is modeled by replacing the matter velocity in the advection term in the…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-17 Maxim Dvornikov

Collisionless shocks can be produced as a result of strong magnetic fields in a plasma flow, and therefore are common in many astrophysical systems. The Weibel instability is one candidate mechanism for the generation of sufficiently strong…

We consider the interaction of a weak gravitational wave with electromagnetic fields in a thin plasma on a Minkowski background spacetime using the 1+3 orthonormal frame formalism. Because gravitational and electromagnetic waves satisfy the…

Astrophysics · Physics 2009-10-31 Mattias Marklund , Gert Brodin , Peter Dunsby

Partially chiral stochastic gravitational wave backgrounds can arise from various processes in the early Universe. The gravitational ABJ anomaly links the chirality of the gravitational field to the chiral fermions, resulting in the…

High Energy Physics - Phenomenology · Physics 2024-12-13 Azadeh Maleknejad

First order phase transitions in the early Universe generate gravitational waves, which may be observable in future space-based gravitational wave observatiories, e.g. the European eLISA satellite constellation. The gravitational waves…

High Energy Physics - Lattice · Physics 2015-11-17 Mark Hindmarsh , Stephan Huber , Kari Rummukainen , David Weir

The kinetic theory for the cylindrical plasma, produced by the cylindrically symmetric (azimuthal mode number m=0) helicon wave, is developed with accounting for the cylindrical geometry and the radial inhomogeneity of the helicon wave and…

Plasma Physics · Physics 2022-02-08 V. V. Mikhailenko , Hae June Lee , V. S. Mikhailenko

By making use of a simple model that captures the key features of the anomalous Maxwell equations, we study the role of inhomogeneities on the evolution of magnetic fields in a chiral plasma. We find that inhomogeneities of the chiral…

High Energy Physics - Phenomenology · Physics 2016-12-07 E. V. Gorbar , I. Rudenok , I. A. Shovkovy , S. Vilchinskii

We show that an inhomogeneous cosmological lepton number may have produced turbulence in the primordial plasma when neutrinos entered (almost) free-streaming regime. This effect may be responsible for the origin of cosmic magnetic fields…

Astrophysics · Physics 2009-11-06 A. D. Dolgov , D. Grasso