scholarly journals Massive complex scalar field in the Kerr–Sen geometry: Exact solution of wave equation and Hawking radiation

2003 ◽  
Vol 44 (3) ◽  
pp. 1084-1088 ◽  
Author(s):  
S. Q. Wu ◽  
X. Cai
Keyword(s):  
Exact Solution ◽  
Wave Equation ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Complex Scalar ◽  
Complex Scalar Field

A cosmological exact solution of generalized Brans-Dicke theory with complex scalar field and its phenomenological implications

Open Physics ◽  
2011 ◽  
Vol 9 (6) ◽  
Author(s):  
Metin Arık ◽  
Mehmet Çalık ◽  
Nihan Katırcı
Keyword(s):  
Exact Solution ◽  
Dark Energy ◽  
Scalar Field ◽  
Friedmann Equation ◽  
Constant Term ◽  
Scale Factor ◽  
Complex Scalar ◽  
Complex Scalar Field

AbstractWhen the Brans-Dicke theory is formulated in terms of the Jordan scalar field φ, the amount of dark energy is related to the mass of this field. We investigate a solution which is relevant to the late universe. We show that if φ is taken to be a complex scalar field, then an exact solution to the vacuum equations requires that the Friedmann equation possesses both a constant term and one which is proportional to the inverse sixth power of the scale factor. Possible interpretations and phenomenological implications of this result are discussed.

S-MATRICES FOR QUANTUM CHARGED MASSIVE SCALAR PARTICLES ON KERR BLACK HOLES

2001 ◽  
Vol 16 (22) ◽  
pp. 1465-1477 ◽  
Author(s):  
N. E. FIRSOVA
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Massive Scalar ◽  
Numerical Computations ◽  
Scattering Problems ◽  
Complex Scalar ◽  
Scalar Particles ◽  
Complex Scalar Field ◽  
Kerr Black Holes

The results obtained recently on the scattering problems connected with the contribution of the topologically inequivalent configurations of the massless complex scalar field on Kerr black holes to the Hawking radiation are extended to include the massive case as well. The corresponding S-matrices are examined and presented in the form convenient for numerical computations.

scholarly journals DIRAC MONOPOLES AND HAWKING RADIATION IN KOTTLER SPACETIME

2002 ◽  
Vol 17 (32) ◽  
pp. 4947-4957
Author(s):  
A. A. BYTSENKO ◽  
YU. P. GONCHAROV
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Energy Density ◽  
Hawking Radiation ◽  
Natural Extension ◽  
Schwarzschild Black Hole ◽  
Complex Scalar ◽  
Radiation Process ◽  
Complex Scalar Field ◽  
The Given

The natural extension of Schwarzschild metric to the case of nonzero cosmological constant Λ known as the Kottler metric is considered and it is discussed under what circumstances the given metric could describe the Schwarzschild black hole immersed in a medium with nonzero energy density. Under the latter situation such an object might carry topologically inequivalent configurations of various fields. The given possibility is analyzed for complex scalar field and it is shown that the mentioned configurations might be tied with natural presence of Dirac monopoles on black hole under consideration. In turn, this could markedly modify the Hawking radiation process.

INCREASE OF HAWKING RADIATION FROM BLACK HOLES BY DIRAC MONOPOLES

1996 ◽  
Vol 05 (04) ◽  
pp. 419-432 ◽  
Author(s):  
YU. P. GONCHAROV ◽  
N.E. FIRSOVA
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Schwarzschild Black Hole ◽  
Complex Scalar ◽  
Total Luminosity ◽  
Complex Scalar Field

We study a mechanism of increasing Hawking radiation from a black hole by using the example of twisted topologically inequivalent configurations (TICs) of a complex scalar field on the Schwarzschild black hole. Physically this increase is tied with the natural presence of Dirac monopoles on black holes. We satisfy both analytical and numerical considerations and find that twisted TICs give the contribution of order 17% to the total luminosity (summed up over all the TICs) of a black hole.

scholarly journals ON GENERALIZED MONOPOLE SPHERICAL HARMONICS AND THE WAVE EQUATION OF A CHARGED MASSIVE KERR BLACK HOLE

2010 ◽  
Vol 25 (38) ◽  
pp. 3191-3200
Author(s):  
SHABNAM BEHESHTI ◽  
FLOYD L. WILLIAMS
Keyword(s):  
Black Hole ◽  
Wave Equation ◽  
Scalar Field ◽  
Spherical Harmonics ◽  
Spherical Harmonic ◽  
Kerr Black Hole ◽  
Complex Scalar ◽  
Linearly Independent ◽  
Complex Scalar Field

We find linearly independent solutions of the Goncharov–Firsova equation in the case of a massive complex scalar field on a Kerr black hole. The solutions generalize, in some sense, the classical monopole spherical harmonic solutions previously studied in the massless cases.

scholarly journals Wave Function for the Reissner–Nordström Black Hole

1997 ◽  
Vol 12 (20) ◽  
pp. 1491-1505 ◽  
Author(s):  
P. V. Moniz
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Wave Function ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Apparent Horizon ◽  
Complex Scalar ◽  
Charge Rate ◽  
Quantum Behavior ◽  
Complex Scalar Field

We study the quantum behavior of Reissner–Nordström (RN) black holes interacting with a complex scalar field. A Maxwell field is also present. Our analysis is based on M. Pollock's1 method and is characterized by solving a Wheeler–DeWitt equation in the proximity of an apparent horizon of the RN space–time. Subsequently, we obtain a wave function Ψ RN [M,Q] representing the RN black hole when its charge, |Q|, is small in comparison with its mass, M. We then compare quantum-mechanically the cases of (i) Q=0 and (ii) M≥|Q|≠0. A special emphasis is given to the evolution of the mass-charge rate affected by Hawking radiation.

S-MATRICES FOR QUANTUM CHARGED MASSLESS SCALAR PARTICLES ON KERR BLACK HOLES

2000 ◽  
Vol 15 (28) ◽  
pp. 4463-4476
Author(s):  
N. E. FIRSOVA
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Massless Scalar ◽  
Numerical Computations ◽  
Scattering Problems ◽  
Complex Scalar ◽  
Scalar Particles ◽  
Complex Scalar Field ◽  
Kerr Black Holes

The scattering problems that arise when considering the contribution of the topologically inequivalent configurations (TIC's) of the massless complex scalar field on Kerr black holes to the Hawking radiation are studied. The corresponding S-matrices are examined and presented in the form convenient for numerical computations.

Sign in / Sign up

Export Citation Format

Share Document