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String theorists reject Einstein's spacetime but do not question the underlying premise, Einstein's false constant-speed-of-light postulate ("true premise, wrong consequence" is forbidden in logic but not in Einstein's schizophrenic world):
Nobel Laureate David Gross observed, "Everyone in string theory is convinced...that spacetime is doomed. But we don't know what it's replaced by." https://www.edge.org/response-detail/26563 Nima Arkani-Hamed (06:09): "Almost all of us believe that space-time doesn't really exist, space-time is doomed and has to be replaced by some more primitive building blocks." https://www.youtube.com/watch?v=U47kyV4TMnE What scientific idea is ready for retirement? Steve Giddings: "Spacetime. Physics has always been regarded as playing out on an underlying stage of space and time. Special relativity joined these into spacetime... [...] The apparent need to retire classical spacetime as a fundamental concept is profound..." https://edge.org/response-detail/25477 So spacetime doesn't exist but ripples in spacetime do exist (we all live in Einstein's schizophrenic world, don't we) and string theorists study them enthusiastically: "Scientists from Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam have found credible theoretical evidence that hidden dimensions - as predicted by string theory - could influence gravitational waves. In a recently published study, they delve into the possible consequences of extra dimensions on the ripples in space-time, and assess whether or not these effects could be detected." https://www.mobipicker.com/gravitati...string-theory/ Pentcho Valev |
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String theorist Petr Horava apparently repudiates Einstein's relativity:
"Rethinking Einstein: The end of space-time. It was a speech that changed the way we think of space and time. The year was 1908, and the German mathematician Hermann Minkowski had been trying to make sense of Albert Einstein's hot new idea - what we now know as special relativity - describing how things shrink as they move faster and time becomes distorted. "Henceforth space by itself and time by itself are doomed to fade into the mere shadows," Minkowski proclaimed, "and only a union of the two will preserve an independent reality." And so space-time - the malleable fabric whose geometry can be changed by the gravity of stars, planets and matter - was born. It is a concept that has served us well, but if physicist Petr Horava is right, it may be no more than a mirage. Horava, who is at the University of California, Berkeley, wants to rip this fabric apart and set time and space free from one another in order to come up with a unified theory that reconciles the disparate worlds of quantum mechanics and gravity - one the most pressing challenges to modern physics." https://www.newscientist.com/article...of-space-time/ "Splitting Time from Space - New Quantum Theory Topples Einstein's Spacetime. Buzz about a quantum gravity theory that sends space and time back to their Newtonian roots. Was Newton right and Einstein wrong? It seems that unzipping the fabric of spacetime and harking back to 19th-century notions of time could lead to a theory of quantum gravity. [...] But now Petr HoĆava, a physicist at the University of California, Berkeley, thinks he understands the problem. It's all, he says, a matter of time. More specifically, the problem is the way that time is tied up with space in Einstein's theory of gravity: general relativity. Einstein famously overturned the Newtonian notion that time is absolute - steadily ticking away in the background. Instead he argued that time is another dimension, woven together with space to form a malleable fabric that is distorted by matter. The snag is that in quantum mechanics, time retains its Newtonian aloofness, providing the stage against which matter dances but never being affected by its presence. These two conceptions of time don't gel." https://www.scientificamerican.com/a...me-from-space/ "Splitting time from space" presupposes declaring that the underlying premise that ties time to space, Einstein's constant-speed-of-light postulate, is false. But, of course, neither Horava nor any other string theorist cares about whether Einstein's spacetime is true or not. They are all degenerate scavengers that feed on the remnants of the dead physics. If repudiating Einstein's relativity will provide them with more carrion, they will repudiate it. If not, not. Pentcho Valev |
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