Particle collisions near a Kerr-like black hole in Brans-Dicke theory

2015 ◽  
Vol 92 (10) ◽  
Author(s):  
Joseph Sultana ◽  
Benjamin Bose
Keyword(s):  
Black Hole ◽  
Particle Collisions

scholarly journals Particle collisions on stringy black hole background

2010 ◽  
Vol 2010 (12) ◽  
Author(s):  
Shao-Wen Wei ◽  
Yu-Xiao Liu ◽  
Hai-Tao Li ◽  
Feng-Wei Chen
Keyword(s):  
Black Hole ◽  
Particle Collisions ◽  
Black Hole Background

scholarly journals CLASSICAL BLACK HOLE PRODUCTION IN QUANTUM PARTICLE COLLISIONS

2005 ◽  
Vol 20 (11) ◽  
pp. 2398-2402 ◽  
Author(s):  
VYACHESLAV S. RYCHKOV
Keyword(s):  
Black Hole ◽  
Quantum Particle ◽  
Particle Collisions ◽  
In Trans

A semiclassical picture of black hole production in trans-Planckian collisions is reviewed.

scholarly journals Magnetized Particle Motion around Black Holes in Conformal Gravity: Can Magnetic Interaction Mimic Spin of Black Holes?

Universe ◽  
2020 ◽  
Vol 6 (3) ◽  
pp. 44 ◽  
Author(s):  
Kamoliddin Haydarov ◽  
Ahmadjon Abdujabbarov ◽  
Javlon Rayimbaev ◽  
Bobomurat Ahmedov
Keyword(s):  
Magnetic Field ◽  
Black Holes ◽  
Black Hole ◽  
Particle Motion ◽  
Center Of Mass ◽  
Conformal Gravity ◽  
Mass Energy ◽  
Particle Collisions ◽  
Center Of Mass Energy ◽  
Sgr A

Magnetized particle motion around black holes in conformal gravity immersed in asymptotically uniform magnetic field has been studied. We have also analyzed the behavior of magnetic fields near the horizon of the black hole in conformal gravity and shown that with the increase of conformal parameters L and N the value of angular component of magnetic field at the stellar surface decreases. The maximum value of the effective potential corresponding to circular motion of the magnetized particle increases with the increase of conformal parameters. It is shown that in all cases of neutral, charged and magnetized particle collisions in the black hole environment the center-of-mass energy decreases with the increase of conformal parameters L and N. In the case of the magnetized and negatively charged particle collisions, the innermost collision point with the maximum center-of-mass energy comes closer to the central object due to the effects of the parameters of the conformal gravity. We have applied the results to the real astrophysical scenario when a pulsar treated as a magnetized particle is orbiting the super massive black hole (SMBH) Sgr A* in the center of our galaxy in order to obtain the estimation of magnetized compact object’s orbital parameter. The possible detection of pulsar in Sgr A* close environment can provide constraints on black hole parameters. Here we have shown that there is degeneracy between spin of SMBH and ambient magnetic field and consequently the interaction of magnetic field ∼ 10 2 Gauss with magnetic moment of magnetized neutron star can in principle mimic spin of Kerr black holes up to 0.6 .

SOLITONS EXPERIENCE FOR BLACK HOLE PRODUCTION IN ULTRARELATIVISTIC PARTICLE COLLISIONS

2012 ◽  
Vol 26 (27n28) ◽  
pp. 1243010 ◽  
Author(s):  
I. YA. AREF'EVA
Keyword(s):  
Black Hole ◽  
Scattering Amplitudes ◽  
Planck Scale ◽  
Functional Integral ◽  
Quantum Field ◽  
Mass Energy ◽  
Particle Collisions ◽  
Functional Integral Method ◽  
Geometrical Cross Section ◽  
Current Paradigm

We discuss the analogy between soliton scattering in quantum field theory and black hole/wormholes (BH/WH) production in ultrarelativistic particle collisions in gravity. It is a common wisdom of the current paradigm suggests that BH/WH formation in particles collisions will happen when a center-mass energy of colliding particles is sufficiently above the Planck scale (the transplanckian region) and the BH/WH production can be estimated by the classical geometrical cross section. We compare the background of this paradigm with the functional integral method to scattering amplitudes and, in particular, we stress the analogy of the BH production in collision of ultrarelativistic particle and appearance of breathers poles in the scattering amplitudes in the Sin–Gordon model.

scholarly journals SIGNATURES OF TEV SCALE GRAVITY IN HIGH ENERGY COLLISIONS

2005 ◽  
Vol 20 (16) ◽  
pp. 1203-1208 ◽  
Author(s):  
A. NICOLAIDIS ◽  
N. G. SANCHEZ
Keyword(s):  
Black Hole ◽  
Deflection Angle ◽  
Logarithmic Singularity ◽  
High Energy ◽  
Particle Collisions ◽  
High Energy Collisions ◽  
The Deflection Angle ◽  
Impact Parameters ◽  
Matter Fields ◽  
Schwarzschild Radius

In TeV scale unification models, gravity propagates in 4+δ dimensions while gauge and matter fields are confined to a four-dimensional brane, with gravity becoming strong at the TeV scale. For a such scenario, we study strong gravitational interactions in an effective Schwarzschild geometry. Two distinct regimes appear. For large impact parameters, the ratio ρ~(Rs/r0)1+δ, (with Rs the Schwarzschild radius and r0 the closest approach to the black hole), is small and the deflection angle χ is proportional to ρ (this is like Rutherford-type scattering). For small impact parameters, the deflection angle χ develops a logarithmic singularity and becomes infinite for ρ = ρ c = 2/(3+δ). This singularity is reflected into a strong enhancement of the backward scattering (like a glory-type effect). We suggest as distinctive signature of black hole formation in particle collisions at TeV energies, the observation of backward scattering events and their associated diffractive effects.

scholarly journals Emergent flux from particle collisions near a Kerr black hole

2011 ◽  
Vol 83 (2) ◽  
Author(s):  
Máximo Bañados ◽  
Babiker Hassanain ◽  
Joseph Silk ◽  
Stephen M. West
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Particle Collisions
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