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PreprintarXiv licencearXiv

Vacuum Decay and Baryogenesis Associated with Primordial Black Holes at Finite Temperature

  • Qi Sun
  • Ligong Bian
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Abstract

Within finite-temperature effective potential framework, we study the effects of PBHs on vacuum decay, the associated gravitational wave spectrum, and the baryon asymmetry. For the PBHs considered, the Hawking temperatures are below the ambient temperature, and their dominant effect is taken to be the gravitational distortion of the Higgs field configuration. Relative to flat spacetime, the PBH background reduces the vacuum decay exponent, enhances the gravitational wave peak amplitude, and shifts the peak frequency downward. For PBH masses of roughly 1011 g−1013 g, the sphaleron energy is reduced, while the small PBH abundance renders the associated washout negligible. Additionally, over roughly the same mass range, PBH-emitted BSM particle decays generate a baryon asymmetry too small to spoil the agreement between the baryon abundances inferred from BBN and CMB.

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Cite

BibTeXRIS
BibTeX
@misc{sun2026vacuum,
  title = {{Vacuum Decay and Baryogenesis Associated with Primordial Black Holes at Finite Temperature}},
  author = {Qi Sun and Ligong Bian},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.08462},
  eprint = {2609.08462},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.08462},
}
RIS
TY  - UNPB
TI  - Vacuum Decay and Baryogenesis Associated with Primordial Black Holes at Finite Temperature
AU  - Qi Sun
AU  - Ligong Bian
PY  - 2026
DA  - 2026/09/08
PB  - arXiv
DO  - 10.48550/arxiv.2609.08462
UR  - https://arxiv.org/abs/2609.08462
AB  - Within finite-temperature effective potential framework, we study the effects of PBHs on vacuum decay, the associated gravitational wave spectrum, and the baryon asymmetry. For the PBHs considered, the Hawking temperatures are below the ambient temperature, and their dominant effect is taken to be the gravitational distortion of the Higgs field configuration. Relative to flat spacetime, the PBH background reduces the vacuum decay exponent, enhances the gravitational wave peak amplitude, and shifts the peak frequency downward. For PBH masses of roughly 10^11 g−10^13 g, the sphaleron energy is reduced, while the small PBH abundance renders the associated washout negligible. Additionally, over roughly the same mass range, PBH-emitted BSM particle decays generate a baryon asymmetry too small to spoil the agreement between the baryon abundances inferred from BBN and CMB.
ER  -