Outputs (4)

Hawking-Moss transition with a black hole seed (2020)
Journal Article
Gregory, R., Moss, I. G., Oshita, N., & Patrick, S. (2020). Hawking-Moss transition with a black hole seed. Journal of High Energy Physics, 2020(9), 1-14. https://doi.org/10.1007/jhep09%282020%29135

We extend the concept of Hawking-Moss, or up-tunnelling, transitions in the early universe to include black hole seeds. The black hole greatly enhances the decay amplitude, however, order to have physically consistent results, we need to impose a new... Read More about Hawking-Moss transition with a black hole seed.

Black holes, oscillating instantons and the Hawking-Moss transition (2020)
Journal Article
Gregory, R., Moss, I. G., & Oshita, N. (2020). Black holes, oscillating instantons and the Hawking-Moss transition. Journal of High Energy Physics, 2020(7), Article 024. https://doi.org/10.1007/jhep07%282020%29024

Static oscillating bounces in Schwarzschild de Sitter spacetime are investigated. The oscillating bounce with many oscillations gives a super-thick bubble wall, for which the total vacuum energy increases while the mass of the black hole decreases du... Read More about Black holes, oscillating instantons and the Hawking-Moss transition.

Connecting the Higgs potential and primordial black holes (2020)
Journal Article
Dai, D., Gregory, R., & Stojkovic, D. (2020). Connecting the Higgs potential and primordial black holes. Physical Review D, 101(12), Article 125012. https://doi.org/10.1103/physrevd.101.125012

It was recently demonstrated that small black holes can act as seeds for nucleating decay of the metastable Higgs vacuum, dramatically increasing the tunneling probability. Any primordial black hole lighter than 4.5 × 1014 g at formation would have e... Read More about Connecting the Higgs potential and primordial black holes.

Are “Superentropic” black holes superentropic? (2020)
Journal Article
Appels, M., Cuspinera, L., Gregory, R., Krtouš, P., & Kubizňák, D. (2020). Are “Superentropic” black holes superentropic?. Journal of High Energy Physics, 2020(2), Article 195. https://doi.org/10.1007/jhep02%282020%29195

We study a critical limit in which asymptotically-AdS black holes develop maximal conical deficits and their horizons become non-compact. When applied to stationary rotating black holes this limit coincides with the “ultraspinning limit” and yields t... Read More about Are “Superentropic” black holes superentropic?.