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arXiv:2210.10587gr-qc

Using black holes as rechargeable batteries and nuclear reactors

Zhan-Feng Mai, Run-Qiu Yang

Abstract

This paper proposes physical processes to use a Schwarzschild black hole as a rechargeable battery and nuclear reactor. As a rechargeable battery, it can at most transform 25\% of input mass into available electric energy in a controllable and slow way. We study its internal resistance, efficiency of discharging, maximum output power, cycle life and totally available energy. As a nuclear reactor, it realizes an effective nuclear reaction ``$α$ particles+black hole$\rightarrow$positrions+black hole'' and can transform 25\% mass of $α$-particle into the kinetic energy of positrons. This process amplifies the available kinetic energy of natural decay hundreds of times. Since some tiny sized primordial black holes are suspected to have an appreciable density in dark matters, the result of this paper implies that such black-hole-originated dark matters can be used as reactors to supply energy.

arXiv comments
9 pages, 2 figures; Accepted by PRD
Journal reference
DOI
Subjects
gr-qcGeneral Relativity and Quantum Cosmology hep-thHigh Energy Physics, Theory

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Linked by 2 identifiable commenters in 3 comments across 2 threads, from Nov 2023 to Dec 2023.

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Discussed in comments2 threads

  1. Electrocaloric material makes refrigerant-free solid-state fridge scalable 1 comment

    • Perhaps a black hole could do some of the Heat phase, at least. From https://news.ycombinator.com/item?id=38450636 : "Using black holes as rechargeable batteries and nuclear reactors" (2023) https://arxiv.org/abs/2210.10587

      westurnerView on HNParent context

  2. Tiny black holes could theoretically be used as a source of power: study 2 comments

    • "Using black holes as rechargeable batteries and nuclear reactors" (2023) https://arxiv.org/abs/2210.10587 : > Abstract: This paper proposes physical processes to use a Schwarzschild black hole as a rechargeable battery and nuclear reactor. As a rechargeable battery, it can at…

      westurnerView on HNParent context

    • https://arxiv.org/abs/2210.10587

      wrycoderView on HNParent context

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