Physics:Bubble of nothing
From HandWiki
Short description: Mathematical instability in string theory
In theoretical physics, a bubble of nothing is a physical instability that is found in higher-dimensional spacetime models. It was first described by Edward Witten in 1982, as a consequence of the positive energy theorem.[1][2][3] It represents a non-perturbative decay channel of Kaluza–Klein theory, in which spacetime can spontaneously collapse through the nucleation of a gravitational instanton.[3] This bubble of nothing has no interior, not even spacetime.[2][3]
Bubbles of nothing are forbidden in models that include supersymmetry.[3]
It has been considered as an hypothetical end of the universe mechanism.[4] As bubbles of nothing have not been observed, their absence can be used to put constraints on other theories.[4]
See also
References
- ↑ Witten, Edward (1982-02-22). "Instability of the Kaluza-Klein vacuum". Nuclear Physics B 195 (3): 481–492. doi:10.1016/0550-3213(82)90007-4. ISSN 0550-3213. https://www.sciencedirect.com/science/article/pii/0550321382900074.
- ↑ 2.0 2.1 Wood, Charlie (2022-08-09). "How the Physics of Nothing Underlies Everything" (in en). https://www.quantamagazine.org/how-the-physics-of-nothing-underlies-everything-20220809/.
- ↑ 3.0 3.1 3.2 3.3 Ong, Yen Chin (2015-11-27) (in en). Evolution of Black Holes in Anti-de Sitter Spacetime and the Firewall Controversy. Springer. ISBN 978-3-662-48270-4. https://www.google.fr/books/edition/Evolution_of_Black_Holes_in_Anti_de_Sitt/M94LCwAAQBAJ?hl=en&gbpv=1&dq=bubble+of+nothing+witten+kaluza&pg=PA85&printsec=frontcover.
- ↑ 4.0 4.1 Minsky, Carly (2020-03-05). "Physicists Are Studying Mysterious ‘Bubbles of Nothing’ That Eat Spacetime" (in en-US). https://www.vice.com/en/article/physicists-are-studying-mysterious-bubbles-of-nothing-that-eat-spacetime/.
External links
- A bubble of absolute nothing on YouTube by Sixty Symbols
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