Spinning test particle motion around a traversable wormhole

Benavides-Gallego, Carlos A.; Han, Wen-Biao; Malafarina, Daniele; Ahmedov, Bobomurat; Abdujabbarov, Ahmadjon

doi:10.48550/arxiv.2107.07998

Cited by 3 publications

(3 citation statements)

References 67 publications

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“…The properties of spinning test particles have been studied in different black hole backgrounds, see Refs. [70][71][72][73][74][75][76][77][78][79]81,82] for examples, and other space-times [83][84][85][86].…”

Section: Introductionmentioning

confidence: 99%

Motion of spinning particles around electrically charged black hole in Eddington-inspired Born–Infeld gravity

Yang

Zhang

2022

Eur. Phys. J. C

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A test particle possessing spin angular momentum moves along a non-geodesic path due to an additional spin-curvature force. We study the spinning test particle moving in the vicinity of the electrically charged black hole formation in Eddington-inspired Born–Infeld (EiBI) gravity. Through the numerical analysis of its effective potential and orbits, it is found that the orbital eccentricity reduces as the deviation parameter $$\kappa $$ κ increases. By comparing the orbits for the observed stars around Sagittarius A*, we conclude that the observed orbits with too large radii can not give a stringent constraint with acceptable magnitude. To dig out the potential observation effects of the relations between the orbits and parameter $$\kappa $$ κ , we mainly focus on the orbits in the vicinity of black hole in this paper. The parameters of inner most stable circular orbit (ISCO) decrease monotonously with $$\kappa $$ κ when the spin angular momentum is small, however they change non-monotonously with $$\kappa $$ κ when the spin is large enough. Moreover, the spin dependences of ISCO parameters have similar behavior to that of Reissner–Nordström (RN) black hole. We analyze the causality of the circular orbits by using the superluminal constraint condition as well. As a result, two new parameter regions may emerge in case of large $$\kappa $$ κ , where the particle has two stable circular orbits with one subluminal and the other superluminal.

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Section: Introductionmentioning

confidence: 99%

Motion of spinning particles around electrically charged black hole in Eddington-inspired Born–Infeld gravity

Yang

Zhang

2022

Eur. Phys. J. C

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“…The properties of spinning test particles have been studied in different black hole backgrounds, see Refs. [61-70, 72, 73] for examples, and other space-times [74][75][76][77].…”

Section: Introductionmentioning

confidence: 99%

Motion of Spinning Particles around Electrically Charged Black Hole in Eddington-inspired Born-Infeld Gravity

Yang,

Gu,

Zhang

2021

Preprint

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A test particle possessing spin angular momentum moves along a non-geodesic path due to an additional spin-curvature force. We study the spinning test particle moving in the vicinity of the electrically charged black hole formation in Eddington-inspired Born-Infeld (EiBI) gravity. Through the numerical analysis of its effective potential and orbits, it is found that the orbital eccentricity reduces as the deviation parameter κ increases. The parameters of inner most stable circular orbit (ISCO) decrease monotonously with κ when the spin angular momentum is small, however they changes non-monotonously with κ when the spin is large enough. Moreover, the spin dependences of ISCO parameters have similar behavior to that of Reissner-Nordström (RN) black hole. We analyze the causality of the circular orbits by using the superluminal constraint condition as well.As a result, two new parameter regions may emerge in case of large κ, where the particle has two stable circular orbits with one subluminal and the other superluminal.

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“…Description of light rays in a gravitational field beyond the geometrical optics approximation has a long history [1,2], and is widely discussed in the current literature [3][4][5][6][7][8][9][10][11][12][13]. It is expected, that account of polarization and chirality of the light beam could lead to a number of dynamic effects, similar to those that occur for spinning particles in a gravitational field [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. First, influence of spin-orbit interaction on the trajectory is under discussion [3][4][5][6][32][33][34][35], and is considered as a gravitational analogue of Magnus or spin Hall effects of light observed in medium [36].…”

mentioning

confidence: 99%

An angular rainbow of light from curved spacetime

Deriglazov

2022

Preprint

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We try to go beyond the geometrical optics approximation, by showing that a massless polarized particle allows a wide class of non minimal interactions with an arbitrary gravitational field. One specific example of a curvature-dependent interaction is presented, that results in a frequencydependent Faraday effect. Even in a Schwarzschild spacetime, this leads to the angular dispersion of polarization planes for a linearly-polarized beam of waves with different frequencies, propagating along the same ray.

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Spinning test particle motion around a traversable wormhole

Cited by 3 publications

References 67 publications

Motion of spinning particles around electrically charged black hole in Eddington-inspired Born–Infeld gravity

Motion of spinning particles around electrically charged black hole in Eddington-inspired Born–Infeld gravity

Motion of Spinning Particles around Electrically Charged Black Hole in Eddington-inspired Born-Infeld Gravity

An angular rainbow of light from curved spacetime

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