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String Theorists Repudiate Einstein's Relativity



 
 
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  #1  
Old March 11th 17, 03:00 PM posted to sci.astro
Pentcho Valev
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Default String Theorists Repudiate Einstein's Relativity

Petr Horava: "What happens in string theory, and I think there is an important lesson in this, is that it does not modify the laws of quantum mechanics one bit. It takes quantum mechanics as is, as it was formulated almost one hundred years ago. The lesson there is maybe that the laws of quantum mechanics are very, very difficult, if not impossible, to modify. On the other hand, string theory very naturally modifies and improves and enhances the laws of general relativity and gravity." http://www.radio.cz/en/section/czech...ntum-mechanics

This is euphemistic language - Petr Horava's ideas are much more radical:

https://www.newscientist.com/article...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."

To "rip this fabric apart and set time and space free from one another" means to declare that Einstein's constant-speed-of-light postulate is false:

http://community.bowdoin.edu/news/20...rs-of-gravity/
"Special relativity is based on the observation that the speed of light is always the same, independently of who measures it, or how fast the source of the light is moving with respect to the observer. Einstein demonstrated that as an immediate consequence, space and time can no longer be independent, but should rather be considered a new joint entity called "spacetime."

Pentcho Valev
  #2  
Old March 12th 17, 12:17 AM posted to sci.astro
Pentcho Valev
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Posts: 8,078
Default String Theorists Repudiate Einstein's Relativity

In a world different from Einstein's schizophrenic world logic forbids the combination "true premise, wrong consequence". In Einstein's schizophrenic world the combination "true premise, wrong consequence" is a fundamental logical rule. So string theorists reject Einstein's spacetime as wrong but worship the underlying premise, Einstein's constant-speed-of-light postulate:

https://www.edge.org/response-detail/26563
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.youtube.com/watch?v=U47kyV4TMnE
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://edge.org/response-detail/25477
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..."

Pentcho Valev
  #3  
Old March 12th 17, 05:23 PM posted to sci.astro
Pentcho Valev
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Default String Theorists Repudiate Einstein's Relativity

"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 Hoƙava, 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/

Time is tied up with space in Einstein's SPECIAL relativity, Petr Horava, not in "Einstein's theory of gravity: general relativity". So "splitting time from space" presupposes declaring that the underlying premise that ties time to space, Einstein's constant-speed-of-light postulate, is false.

Of course, neither Horava nor any other "theoretician" cares about whether Einstein's spacetime is true or not. They are all 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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