The multiverse was proposed as a way to make sense of bizarre quantum behaviour. Image courtesy of Victor De Schwanberg/Science Photo Library
Joel Kontinen
A photon
was apparently detected in two places at once in a twist on the classic
double-slit experiment, but many physicists didn't accept the results.
A physics experiment published this year that claimed to measure a single photon in two places at once – and, in the process, discredit the idea of a multiverse – drew pushback from many sceptical physicists, but the scientists behind the demonstration stand by their claim.
In
May, Holger Hofmann at Hiroshima University in
Japan and his colleagues reported the results of a modified version of the
famous double-slit experiment that showed individual photons being
“delocalised”, or impossible to tie down in one place.
However, there is only one universe.
Source:
Alex Wilkins 2025 A controversial experiment threatened to kill the multiverse in 2025 | New Scientist 30 December
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