Black holes are exceptional due to their time evolution and information processing. However, these properties are generic for objects, the saturons, that attain the maximal entropy permitted by unitarity. We verify this connection within a renormalizable SU(N) invariant theory. We show that the spectrum of the theory contains a tower of bubbles representing bound states of SU(N) Goldstones. Despite the absence of gravity, a saturated bound state exhibits a striking correspondence with a black hole: Its entropy is given by the Bekenstein-Hawking formula; semiclassically, the bubble evaporates at a thermal rate with a temperature equal to its inverse radius; the information retrieval time is similar to Page's time.
Additionally, vorticity has been suggested to be a property of highly spinning black holes. The connection between vorticity and limiting spin represents a universal feature saturons share. Using saturons as a laboratory for black holes, we study the collision and merger of two such objects and find that vorticity can significantly impact the emitted radiation and the charge and angular momentum of the final configuration. As black holes belong to the class of saturons, we expect that forming vortices can cause similar effects in black hole mergers, leading to macroscopic deviations in gravitational radiation. This could leave unique signatures detectable with upcoming gravitational-wave searches, providing a portal to visible quantum effects in black holes.
References
[1] How special are black holes? Correspondence with objects saturating unitarity bounds in generic theories
Gia Dvali (Munich, Max Planck Inst. and Munich U., ASC), Oleg Kaikov (Munich, Max Planck Inst. and Munich U., ASC), Juan Sebastián Valbuena Bermúdez (Munich, Max Planck Inst. and Munich U., ASC)
e-Print: 2112.00551 [hep-th]
DOI: 10.1103/PhysRevD.105.056013 (publication)
Published in: Phys.Rev.D 105 (2022) 5, 056013
[2] Vortex Effects in Merging Black Holes and Saturons
Gia Dvali, Oleg Kaikov, Florian Kuhnel, Juan Sebastián Valbuena-Bermúdez, Michael Zantedeschi
e-Print: 2310.02288 [hep-ph]