摘要: In this paper, we study the quantum geometric effects near the locations that
black hole horizons used to appear in Einstein's classical theory within the
framework of the improved dynamic approach, in which the two polymerization
parameters of the Kantowski-Sachs spacetime are functions of the phase space
variables. Our detailed analysis shows that the effects are so strong that
black hole horizons of the effective quantum theory do not exist any longer,
and the corresponding Kantowski-Sachs model now describes the entire spacetime
of the trapped region, instead of being only the internal region of a black
hole, as it is usually expected in loop quantum gravity.
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