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• W3105241754 abstract "We consider a Schwarzschild type solution in the discrete Regge calculus formulation of general relativity quantized within the path integral approach. Earlier, we found a mechanism of a loose fixation of the background scale of Regge lengths. This elementary length scale is defined by the Planck scale and some free parameter of such a quantum extension of the theory. Besides, Regge action was reduced to an expansion over metric variations between the tetrahedra and, in the main approximation, is a finite-difference form of the Hilbert-Einstein action. Using for the Schwarzschild problem a priori general non-spherically symmetrical ansatz, we get finite-difference equations for its discrete version. This defines a solution which at large distances is close to the continuum Schwarzschild geometry, and the metric and effective curvature at the center are cut off at the elementary length scale. Slow rotation can also be taken into account (Lense-Thirring-like metric). Thus we get a general approach to the classical background in the quantum framework in zero order: it is an optimal starting point for the perturbative expansion of the theory; finite-difference equations are classical, the elementary length scale has quantum origin. Singularities, if any, are resolved." @default.
• W3105241754 created "2020-11-23" @default.
• W3105241754 creator A5058493556 @default.
• W3105241754 date "2020-10-17" @default.
• W3105241754 modified "2023-09-30" @default.
• W3105241754 title "On the Discrete Version of the Schwarzschild Problem" @default.
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• W3105241754 doi "https://doi.org/10.3390/universe6100185" @default.
• W3105241754 hasPublicationYear "2020" @default.
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