Excavations at the gravitationally collapsed site: Recent findings

Spanish Relativity Meeting: almost 100 years after Einstein's revolution

Singh, Suprit^1

Inter-University, Centre for Astronomy and Astrophysics, Ganeshkhind, Pune

411 007, India^1

关键词: Adiabatic expansion;    Detector response;    Energy density;    Hawking effect;    Non-asymptotic;    Quantum effects;    Stress-energy tensor;    Thermal fluxes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/600/1/012035/pdf
DOI  :  10.1088/1742-6596/600/1/012035

来源: IOP

【 摘 要 】

Hawking effect was digged out of the gravitationally collapsed site forty years back when it was realised that quantum effects at the horizon could propagate outward to infinity giving rise to a thermal flux at late-times. However, the situation regarding non-asymptotic observers was never completely clear. Also, recently a debate has sprung in the community as to what would infallingobservers perceive while crossing the horizon. We set out to settle this question and more at least semi-classically in the articles [7] and [8] with a fresh approach. We introduce a new set of coordinates that are regular everywhere, consider the adiabatic expansion of detector response and its link to the trajectory-dependent 'effective' temperature/s and also local invariant observables, energy density and flux, built from renormalized stress energy tensor. This paper is a concise summary of the new procedure and the results obtained thereof.