Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

doi:10.1088/1674-1056/27/4/040402

中国物理B ›› 2018, Vol. 27 ›› Issue (4): 40402-040402.doi: 10.1088/1674-1056/27/4/040402

Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

D M S Zaman, M Amina, P R Dip, A A Mamun

1. Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh;
2. Department of EEE, Bangladesh University of Business and Technology(BUBT), Mirpur-2, Dhaka-1216, Bangladesh

收稿日期:2017-10-24 修回日期:2017-12-23 出版日期:2018-04-05 发布日期:2018-04-05
通讯作者: D M S Zaman E-mail:saadzamanshaon@gmail.com

Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

D M S Zaman¹, M Amina², P R Dip¹, A A Mamun¹

1. Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh;
2. Department of EEE, Bangladesh University of Business and Technology(BUBT), Mirpur-2, Dhaka-1216, Bangladesh

Received:2017-10-24 Revised:2017-12-23 Online:2018-04-05 Published:2018-04-05
Contact: D M S Zaman E-mail:saadzamanshaon@gmail.com

摘要/Abstract

摘要： Nucleus-acoustic (NA) solitary waves (SWs) propagating in a self-gravitating degenerate quantum plasma (SDQP) system (containing non-relativistically degenerate heavy and light nuclei, and non-/ultra-relativistically degenerate electrons) have been theoretically investigated. The modified Korteweg-de Vries (mK-dV) equation has been derived for both planar and non-planar geometry by employing the reductive perturbation technique. It is shown that the NA SWs exist with positive (negative) electrostatic (self-gravitational) potential. It is also observed that the effects of non-/ultra-relativistically degenerate electron pressure, dynamics of non-relativistically light nuclei, spherical geometry, etc. significantly modify the basic features (e.g., amplitude, width, speed, etc.) of the NA SWs. The applications of our results, which are relevant to astrophysical compact objects, like white dwarfs and neutron stars, are briefly discussed.

关键词: self-gravitational potential, solitary waves

Abstract: Nucleus-acoustic (NA) solitary waves (SWs) propagating in a self-gravitating degenerate quantum plasma (SDQP) system (containing non-relativistically degenerate heavy and light nuclei, and non-/ultra-relativistically degenerate electrons) have been theoretically investigated. The modified Korteweg-de Vries (mK-dV) equation has been derived for both planar and non-planar geometry by employing the reductive perturbation technique. It is shown that the NA SWs exist with positive (negative) electrostatic (self-gravitational) potential. It is also observed that the effects of non-/ultra-relativistically degenerate electron pressure, dynamics of non-relativistically light nuclei, spherical geometry, etc. significantly modify the basic features (e.g., amplitude, width, speed, etc.) of the NA SWs. The applications of our results, which are relevant to astrophysical compact objects, like white dwarfs and neutron stars, are briefly discussed.

Key words: self-gravitational potential, solitary waves

中图分类号: (Self-gravitating systems; continuous media and classical fields in curved spacetime)

04.40.-b

05.45.Yv (Solitons)

D M S Zaman,M Amina,P R Dip,A A Mamun. Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas[J]. 中国物理B, 2018, 27(4): 40402-040402.

D M S Zaman, M Amina, P R Dip, A A Mamun. Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas[J]. Chin. Phys. B, 2018, 27(4): 40402-040402.

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Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

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