Gravitational Measurements in Higher Dimensions

Yekta, Davood Mahdavian; Alavi, S. A.; Karimabadi, Majid

doi:10.3390/galaxies9010004

Cited by 5 publications

(4 citation statements)

References 80 publications

(120 reference statements)

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“…It can be checked from Fig (4). and Fig (7). that the time period of the neutrino spin oscillations probability increases with increasing dimensions:…”

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confidence: 87%

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Neutrino spin oscillations in gravitational fields in higher dimensions

Alavi¹,

Serish²

2022

Preprint

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Neutrino physics in one of the most active fields of research with important implications for particle physics, cosmology and astrophysics. On the other hand, motivated by some theories including string theory, formulation of physical theories in more than four space-time dimensions has been the subject of increasing attention in recent years. Interaction of neutrinos with gravitational fields is one of the interesting phenomena which can lead to transition between different helicity states (spin oscillations). We study neutrino spin oscillations in Schwarzschild and RN backgrounds in higher dimensional gravitational fields. We calculate the transition probability as a function of time and also study the dependence of the oscillation frequency on the orbital radius. The results help us to better understand the behavior of gravity and neutrinos in higher dimensions.

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“…It can be checked from Fig (4). and Fig (7). that the time period of the neutrino spin oscillations probability increases with increasing dimensions:…”

mentioning

confidence: 87%

“…In Fig. (7) the neutrino spin transition probability P (t) for RN metric is plotted in three together with higher dimensions. It is seen that the behaviour is the same as Schwarzschild metric i.e., by increasing the dimension of space, the time period of oscillations increases.…”

Section: Neutrino Spin Oscillations In Gravitational Fieldsmentioning

confidence: 99%

Neutrino spin oscillations in gravitational fields in higher dimensions

Alavi¹,

Serish²

2022

Preprint

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“…13-18) and higher dimensions (Refs. [19][20][21][22][23][24][25][26][27]. Vierbein four-velocity u a = (u a , u 1 , u 2 , u 3 ) and four-velocity of the particle in its geodesic path U µ are related by the following relation: [28][29][30][31]…”

Section: Neutrino Spin Oscillations In Noncommutative Gravitational F...mentioning

confidence: 99%

Neutrino spin oscillations in gravitational fields in higher dimensions

Alavi

Serish

2022

Mod. Phys. Lett. A

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Neutrino physics is one of the most active fields of research with important implications for particle physics, cosmology and astrophysics. On the other hand, motivated by some theories including string theory, formulation of physical theories in more than four spacetime dimensions has been the subject of increasing attention in recent years. Interaction of neutrinos with gravitational fields is one of the interesting phenomena which can lead to transition between different helicity states (spin oscillations). We study neutrino spin oscillations in Schwarzschild and RN backgrounds in higher-dimensional gravitational fields. We calculate the transition probability as a function of time and also study the dependence of the oscillation frequency on the orbital radius. The results help us to better understand the behavior of gravity and neutrinos in higher dimensions.

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“…Thus, we will consider the perturbations through a massive scalar field coupled nonminimally with gravity [13,14]. Some efforts in that sense were considered [15][16][17][18][19]. For instance, in [17] it was analyzed the long-lived quasinormal modes and the instability in a Reissner-Nordström spacetime.…”

Section: Introductionmentioning

confidence: 99%

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of self-dual black hole

2021

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In this work, we investigate the quasinormal modes for a massive scalar field with a nonminimal coupling with gravity in the spacetime of a loop quantum black hole, known as the self-dual black hole. In this way, we have calculated the characteristic frequencies using the 3rd order WKB approach, where we can verify a strong dependence with the mass of scalar field, the parameter of nonminimal coupling with gravity, and parameters of the loop quantum gravity. From our results, we can check that the self-dual black hole is stable under the scalar perturbations when assuming small values for the parameters. Also, such results tell us that the quasinormal modes assume different values for the cases where the mass of field is null and the nonminimal coupling assumes $$\xi =0$$ ξ = 0 and $$\xi =1/6$$ ξ = 1 / 6 , i.e., a possible breaking of the conformal invariance can be seen in the context of loop quantum black holes.

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Gravitational Measurements in Higher Dimensions

Cited by 5 publications

References 80 publications

Neutrino spin oscillations in gravitational fields in higher dimensions

Neutrino spin oscillations in gravitational fields in higher dimensions

Neutrino spin oscillations in gravitational fields in higher dimensions

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of self-dual black hole

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