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We revisit Hawking’s original derivation of the evaporation process in a non-stationary spacetime, presenting it in a clear and pedagogical manner, with a focus on the spherical collapse of a star into a black hole. Our analysis highlights the underlying assumptions in the calculations, clarifying their physical significance, potential implications, and the limitations of this approach.

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Deriving the Paradox: Original Derivation of Hawking Radiation

  • 章节

  • 发表日期：

    2025年

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  • Mariano Cadoni,
  • Salvatore Mignemi,
  • Mirko Pitzalis,
  • Andrea P. Sanna

摘要

We revisit Hawking’s original derivation of the evaporation process in a non-stationary spacetime, presenting it in a clear and pedagogical manner, with a focus on the spherical collapse of a star into a black hole. Our analysis highlights the underlying assumptions in the calculations, clarifying their physical significance, potential implications, and the limitations of this approach.