SEPARATING STATIONARY AXIALLY-SYMMETRIC ASYMPTOTICALLY FLAT METRICS

1989 ◽  
Vol 04 (12) ◽  
pp. 2953-2958 ◽  
Author(s):  
Z. YA. TURAKULOV
Keyword(s):  
Gordon Equation ◽  
Separation Of Variables ◽  
Vacuum Solution ◽  
Complete Separation ◽  
Kerr Metric ◽  
Axially Symmetric ◽  
Spherical System ◽  
Asymptotically Flat ◽  
Klein Gordon ◽  
Klein Gordon Equation

Stationary axially-symmetric asymptotically flat metrics allowing the complete separation of variables in the Klein-Gordon equation are considered. It is shown that if such metrics coincide at infinity with the metric of spherical system of coordinates, the variables for them in the Einstein equation are completely separable and the only vacuum solution is the Kerr metric.

scholarly journals Exact solutions of the 2D Dunkl–Klein–Gordon equation: The Coulomb potential and the Klein–Gordon oscillator

2021 ◽  
pp. 2150171
Author(s):  
R. D. Mota ◽  
D. Ojeda-Guillén ◽  
M. Salazar-Ramírez ◽  
V. D. Granados
Keyword(s):  
Angular Momentum ◽  
Energy Spectrum ◽  
Exact Solutions ◽  
Coulomb Potential ◽  
Gordon Equation ◽  
Separation Of Variables ◽  
Point Of View ◽  
Algebraic Point ◽  
Klein Gordon ◽  
Klein Gordon Equation

We introduce the Dunkl–Klein–Gordon (DKG) equation in 2D by changing the standard partial derivatives by the Dunkl derivatives in the standard Klein–Gordon (KG) equation. We show that the generalization with Dunkl derivative of the z-component of the angular momentum is what allows the separation of variables of the DKG equation. Then, we compute the energy spectrum and eigenfunctions of the DKG equations for the 2D Coulomb potential and the Klein–Gordon oscillator analytically and from an su(1, 1) algebraic point of view. Finally, we show that if the parameters of the Dunkl derivative vanish, the obtained results suitably reduce to those reported in the literature for these 2D problems.

Separation of variables in the Klein ? Gordon equation. I

1973 ◽  
Vol 16 (11) ◽  
pp. 1533-1538 ◽  
Author(s):  
V. G. Bagrov ◽  
A. G. Meshkov ◽  
V. N. Shapovalov ◽  
A. V. Shapovalov
Keyword(s):  
Gordon Equation ◽  
Separation Of Variables ◽  
Klein Gordon ◽  
Klein Gordon Equation

scholarly journals The Goursat problem at the horizons for the Klein–Gordon equation on the de Sitter–Kerr metric

2021 ◽  
Vol 18 (03) ◽  
pp. 609-652
Author(s):  
Pascal Millet
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Gordon Equation ◽  
Goursat Problem ◽  
Main Topic ◽  
Kerr Metric ◽  
De Sitter ◽  
Massless Field ◽  
Klein Gordon ◽  
Klein Gordon Equation

The main topic of this paper is the Goursat problem at the horizon for the Klein–Gordon equation on the De Sitter–Kerr metric when the angular momentum (per unit of mass) of the black hole is small. Indeed, we solve the Goursat problem for fixed angular momentum [Formula: see text] of the field (with the restriction that [Formula: see text] is not zero in the case of a massless field).

scholarly journals Fractional Klein-Gordon equation with singular mass

2021 ◽  
Vol 143 ◽  
pp. 110579
Author(s):  
Arshyn Altybay ◽  
Michael Ruzhansky ◽  
Mohammed Elamine Sebih ◽  
Niyaz Tokmagambetov
Keyword(s):  
Gordon Equation ◽  
Klein Gordon ◽  
Klein Gordon Equation
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