Plaga’s article has equations and was published in a scientific journal—Foundations of Physics, 1997. The journal had small impact factor at the time and its editor was Carlo Rovelli. There is no public retraction or refutation of it, except an obscure Quora post where someone said that Plaga doesn’t endorse this anymore. Plaga had around 10 astrophysics articles in 90s.
He (or a person with the same name) works now on “LLM security in Germany”—not a really bad sign as H.Everett also turned to defense industry later.
This is extremely weak signal compared to understanding the technical argument, the literature is full of nonsense that checks all the superficial boxes. Unfortunately it’s not always feasible or worthwhile to understand the technical argument. This leaves the superficial clues, but you need to be aware how little they are worth.
Interesting coincident: Yesterday a new preprint appeared on the same topic
Quantum observers can communicate across multiverse branches Maria Violaris
It is commonly thought that observers in distinct branches of an Everettian multiverse cannot communicate without violating the linearity of quantum theory. Here we show a counterexample, demonstrating that inter-branch communication is in fact possible, entirely within standard quantum theory. We do this by considering a Wigner’s-friend scenario, where an observer (Wigner) can have quantum control over another observer (the friend). We present a thought experiment where the friend in superposition can receive a message written by a distinct copy of themselves in the multiverse, with the aid of Wigner. To maintain the unitarity of quantum theory, the observers must have no memory of the message that they sent. Our thought experiment challenges conventional wisdom regarding the ultimate limits of what is possible in an Everettian multiverse. It has a surprising potential application which involves using knowledge-creation paradoxes for testing Everettian quantum theory against single-world theories
If memory serves, the journal Foundations of Physics was long known as a place for people to publish wild fringe theories that would never get accepted by more mainstream physics journals.
I remember back in 2007, this was common knowledge, so it was big news that (widely respected physicist) Gerard ’t Hooft was due to take over as editor-in-chief, and people in the physics department were speculating about whether he would radically change the nature of the journal. I don’t know whether that happened or not. But anyway, 1997 is before that.
Plaga’s article has equations and was published in a scientific journal—Foundations of Physics, 1997. The journal had small impact factor at the time and its editor was Carlo Rovelli. There is no public retraction or refutation of it, except an obscure Quora post where someone said that Plaga doesn’t endorse this anymore. Plaga had around 10 astrophysics articles in 90s.
He (or a person with the same name) works now on “LLM security in Germany”—not a really bad sign as H.Everett also turned to defense industry later.
This is extremely weak signal compared to understanding the technical argument, the literature is full of nonsense that checks all the superficial boxes. Unfortunately it’s not always feasible or worthwhile to understand the technical argument. This leaves the superficial clues, but you need to be aware how little they are worth.
Interesting coincident: Yesterday a new preprint appeared on the same topic
Quantum observers can communicate across multiverse branches
Maria Violaris
https://arxiv.org/abs/2601.08102
Scott Aronson already wrote in FB that it is wrong.
If memory serves, the journal Foundations of Physics was long known as a place for people to publish wild fringe theories that would never get accepted by more mainstream physics journals.
I remember back in 2007, this was common knowledge, so it was big news that (widely respected physicist) Gerard ’t Hooft was due to take over as editor-in-chief, and people in the physics department were speculating about whether he would radically change the nature of the journal. I don’t know whether that happened or not. But anyway, 1997 is before that.