Zobrazeno 1 - 10
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pro vyhledávání: '"Brodin, Gert"'
Autor:
Brodin, Gert, Al-Naseri, Haidar
We use a recently developed kinetic model derived from the Dirac equation, in order to study electromagnetic wave propagation in superstrong magnetic fields, such as in magnetars, where relativistic Landau quantization is prominent. The leading contr
Externí odkaz:
http://arxiv.org/abs/2402.09554
Autor:
Al-Naseri, Haidar, Brodin, Gert
In this paper, a phase-space description of electron-positron pair-creation will be applied, based on a Wigner transformation of the Klein-Gordon equation. The resulting theory is similar in many respects to the equations from the Dirac-Heisenberg-Wi
Externí odkaz:
http://arxiv.org/abs/2305.10106
Autor:
Al-Naseri, Haidar, Brodin, Gert
We study the contribution from the electron spin to the ponderomotive force, using a quantum kinetic model including the spin-orbit correction. Specifically, we derive an analytical expression for the ponderomotive force, applicable for electrostatic
Externí odkaz:
http://arxiv.org/abs/2302.05136
Autor:
Al-Naseri, Haidar, Brodin, Gert
We study the evolution of electrostatic plasma waves, using the relativistic Vlasov equation extended by the Landau-Lifshitz radiation reaction, accounting for the back-reaction due to the emission of single particle Larmor radiation. In particular,
Externí odkaz:
http://arxiv.org/abs/2211.06240
Strong field physics close to or above the Schwinger limit are typically studied with vacuum as initial condition, or by considering test particle dynamics. However, with a plasma present initially, quantum relativistic mechanisms such as Schwinger p
Externí odkaz:
http://arxiv.org/abs/2209.07872
Autor:
Brodin, Gert, Zamanian, Jens
As is well-known, for plasmas of high density and modest temperature, the classical kinetic theory needs to be extended. Such extensions can be based on the Schr\"odinger Hamiltonian, applying a Wigner transform of the density matrix, in which case t
Externí odkaz:
http://arxiv.org/abs/2111.00994
Autor:
Misra, Amar P., Brodin, Gert
Publikováno v:
Reviews of Modern Plasma Physics (2022) 6:5
Wave-particle interaction (WPI) is one of the most fundamental processes in plasma physics in which one most prominent example is the Landau damping. Owing to its excellent energy-exchange mechanism, the WPI has gained increasing interest not only fr
Externí odkaz:
http://arxiv.org/abs/2111.00196
Publikováno v:
Phys. Plasmas 28, 112102 (2021)
The linear and nonlinear theories of electron-acoustic waves (EAWs) are studied in a partially degenerate quantum plasma with two-temperature electrons and stationary ions. The initial equilibrium of electrons is assumed to be given by the Fermi-Dira
Externí odkaz:
http://arxiv.org/abs/2106.12754
Publikováno v:
Phys. Rev. E 104, 015207 (2021)
We derive a system of coupled partial differential equations for the equal-time Wigner function in an arbitrary strong electromagnetic field using the Dirac-Heisenberg-Wigner formalism. In the electrostatic limit, we present a 3+1-system of four coup
Externí odkaz:
http://arxiv.org/abs/2104.05370
Publikováno v:
Phys. Rev. E 102, 043203 (2020)
When the Zeeman energy approaches the characteristic kinetic energy of electrons, Landau quantization becomes important. In the vicinity of magnetars, the Zeeman energy can even be relativistic. We start from the Dirac equation and derive a kinetic e
Externí odkaz:
http://arxiv.org/abs/2005.13916