Generalized Principal-State-of-Polarization Analysis and Matrix Model for Piezoelectric Polarization Controllers

Li, Zhengyong; Wu, Chongqing; Yang, Shuangshou; Chang-Yong, Tian; Zhao, Shengzhi; Wang, Yongjun

doi:10.1088/0256-307x/25/4/044

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…In these graphs each curve corresponds to the maximum value V max which means that for photons, only an unstable circular orbit exists. In these two figures, the effective potentials of Kiselev (19), Reissner-Nordstr öm (20) and Schwartzschild (21) black holes are displayed as references. In Fig.…”

Section: B Equations Of Motion For a Photonmentioning

confidence: 99%

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Strong gravitational lensing by a charged Kiselev black hole

2017

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We study the gravitational lensing scenario where the lens is a spherically symmetric charged black hole (BH) surrounded by quintessence matter. The null geodesic equations in the curved background of the black hole are derived. The resulting trajectory equation is solved analytically via perturbation and series methods for a special choice of parameters, and the distance of the closest approach to black hole is calculated. We also derive the lens equation giving the bending angle of light in the curved background. In the strong field approximation, the solution of the lens equation is also obtained for all values of the quintessence parameter w q . For all w q , we show that there are no stable closed null orbits and that corrections to the deflection angle for the Reissner-Nordström black hole when the observer and the source are at large, but finite, distances from the lens do not depend on the charge up to the inverse of the distances squared. A part of the present work, analyzed, however, with a different approach, is the extension of Younas et al. (Phys Rev D 92:084042, 2015) where the uncharged case has been treated.

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Section: B Equations Of Motion For a Photonmentioning

confidence: 99%

“…So far, wide variety of dark energy models with dynamical scalar fields have been proposed as alternative models to the cosmological constant. Such scalar field models include: quintessence [16][17][18][19], k-essence [20], quintom [21,22], phantom dark energy [23] and others.…”

Section: Introductionmentioning

confidence: 99%

Strong gravitational lensing by a charged Kiselev black hole

2017

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“…Cosmic inflation is understood to be driven by some matter field typically called the "inflaton", which exhibits an equation of state p = ρ q ω q , where p is the pressure, ρ q is the density of energy and ω q is the state parameter. In this category, we can find quintessence [26,27], phantom [28], k-essence [29], and quintom [30,31] models.…”

Section: Introductionmentioning

confidence: 99%

Quasinormal modes of gravitational perturbation around regular Bardeen black hole surrounded by quintessence

2018

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In this paper, Quasinormal modes of gravitational perturbation are investigated for the regular Bardeen black hole surrounded by quintessence. Considering the metric of the Bardeen spacetime surrounded by quintessence, we derived the perturbation equation for gravitational perturbation using Regge-Wheeler gauge. The third order WentzelKramers-Brillouin (WKB) approximation method is used to evaluate quasinormal frequencies. Explicitly, the behaviors of the black hole potential and quasinormal modes were plotted. The results show that, due to the presence of quintessence, the gravitational perturbation around the black hole damps more slowly and oscillates more slowly.

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“…We now study the Dirac Eqs. (9)(10)(11)(12) in the background of metric (3). To solve the Dirac equations, we will consider the corresponding Compton wave of the Dirac particle as in the form of kt+mφ) , where k is the frequency of the incoming wave and m is the azimuthal quantum number of the wave.…”

Section: Dirac Equation In Bbhsqmentioning

confidence: 99%

“…In addition, the scalar fields are also hypothetical forms of dark energy where a broad types of scalar field models have been suggested such as quintessence [8][9][10][11][12][13][14][15], phantom models [16][17][18][19][20], K-essence [21,22], quintom [23,24], and so on. Ultimately, the difference between these models is due to the magnitude of w q and for quintessence −1 ≤ w q ≤ − 1 3 .…”

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confidence: 99%

Solution of Dirac equation and greybody radiation around a regular Bardeen black hole surrounded by quintessence

2020

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The exact solutions of the Dirac equation that describe a massive, non-charged particle with spin− 1 2 in the curved spacetime geometry of regular Bardeen black hole surrounded by quintessence (BBHSQ) are investigated. We first derive the Dirac equation in the BBHSQ background using a null tetrad in the Newman-Penrose formalism. Afterward, we separate the Dirac equation into ordinary differential equations for the radial and angular parts. The angular equations are solved exactly in terms of standard spherical harmonics. The radial part equations are transformed into a Schrödinger like differential wave equations with effective potentials. The effect of the quintessence on the regular Bardeen black hole is studied by understanding the physical behavior of the effective potentials. In addition, the potentials are plotted with changing the quintessence parameters, magnetic monopole charge parameter and the frequency of the particle in the physically acceptable regions. Finally, we study the greybody radiation of spin−0 particles from the BBHSQ.2

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Generalized Principal-State-of-Polarization Analysis and Matrix Model for Piezoelectric Polarization Controllers

Abstract: LI Zheng-Yong( ) * * , WU Chong-Qing( ), YANG Shuang-Shou( ), TIAN Chang-Yong( ), ZHAO Shuang( ), WANG Yong-Jun( )

Cited by 8 publications

References 11 publications

Strong gravitational lensing by a charged Kiselev black hole

Strong gravitational lensing by a charged Kiselev black hole

Quasinormal modes of gravitational perturbation around regular Bardeen black hole surrounded by quintessence

Solution of Dirac equation and greybody radiation around a regular Bardeen black hole surrounded by quintessence

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