Kinetic Alfven waves in dense quantum plasmas with effect of spin magnetization

Sadiq, Nauman; Ahmad, Masood

doi:10.1088/2516-1067/ab168f

Cited by 9 publications

(3 citation statements)

References 48 publications

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“…values are incorporated [23][24][25][26]. The results used in equations ( 2) and (3) can only be valid when k B T j = ε Fj .…”

Section: Physical Model and Formalismmentioning

confidence: 99%

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Propagatory dynamics of electromagnetic drift waves in inhomogeneous spin degenerate compact objects plasmas

Ahmad

2023

Phys. Scr.

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A theoretical analysis is carried out to investigate the dynamics of electromagnetic drift modes in non-uniform spin quantum magnetoplasmas in degenerate compact objects. General dispersion relations are derived using spin quantum hydrodynamic equations, Poisson equation, and Maxwell equation, with and without ion inertial effects. The effects of quantum spin magnetization, Bohm potential, and density inhomogeneity on the dispersion of electromagnetic drift modes are explored numerically. The advancing theoretical analysis demonstrated herein has strong correlations and consistencies with the dynamic growth of compact astrophysical objects and their surrounding atmospheres, such as black holes, white dwarfs, and dense molecular clouds.

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“…values are incorporated [23][24][25][26]. The results used in equations ( 2) and (3) can only be valid when k B T j = ε Fj .…”

Section: Physical Model and Formalismmentioning

confidence: 99%

“…In magnetized plasmas, the electron spin has two eigenstates, namely, spin-up and spin-down relative to the background magnetic field B 0 . When the plasma is in equilibrium, the average value of spin can be evaluated [23][24][25][26]…”

Section: Introductionmentioning

confidence: 99%

Propagatory dynamics of electromagnetic drift waves in inhomogeneous spin degenerate compact objects plasmas

Ahmad

2023

Phys. Scr.

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“…Similarly Marklund, Brodin and Garai in [36][37][38] have proposed the spin-1/ 2 quantum MHD (QMHD) models for MHD and oblique MHD waves. Linear and non linear propagation of kinetic Alfven and inertial Alfvén waves with effects of spin magnetization and exchangecorrelation potential have been investigated in [39,40]. Waves and instabilities in relativistic anisotropic magnetohydrodynamic plasma were examined by Patidar et al in [41].…”

Section: Introductionmentioning

confidence: 99%

MHD waves with Landau diamagnetic pressure and Pauli paramagnetizim in degenerate plasmas

Safdar¹,

Ahmad²,

Esmaeili³

et al. 2020

Phys. Scr.

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Magnetosonic waves are studied in the presence of degenerate pressure due to Landau diamagnetic levels and Pauli spin magnetization with strong magnetic field in quantum degenerate electron-ion plasma. A linear dispersion relation of low frequency propagation wave in the direction of magnetic field is derived that strongly depends on the magnetic field while in classical regime this field has no such a role. In the presence of quantization of orbital motion and spin magnetization, new propagation modes of quantum plasmas are also explored. It is noted that quantum acoustic velocity and spin magnetization energy affect the Alfven mode propagation. The quantum effects are incorporated through the Bohm potential, Landau pressure due to Landau quantization of magnetic field and magnetization energy due to spin effect. The current model in the context of Landau diamagnetic pressure along with spin magnetization is sufficient for studying the astrophysical plasma environment existing in the compact systems e.g., white dwarfs and neutron stars.and while the field of interior core of NS can reach ;10 11 Tesla or even may be higher [9][10][11]. Further this field may be increased by a factor 10 3 ∼10 4 due to the rotational movement of stars RECEIVED

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