Is string theory mathematically correct?

String theory is a quantum theory in that the mass spectrum of strings is discrete, so string theory is an example of a quantum theory of gravity. Furthermore, the dimension of spacetime is uniquely fixed to be ten in order for the theory to be internally consistent mathematically.

Why the string theory is wrong?

An increasing number of physicists are skeptical that string theory can unite the fundamental forces of nature. And some physicists now view strings as a failed theory because it doesn’t make useful predictions about the universe.

How accurate is string theory?

Slightly under 50\% of these… [+] Supersymmetry is an idea that hopes to improve on the Standard Model, but it has yet to make successful predictions about the Universe in attempting to supplant the prevailing theory. If there is no supersymmetry at all energies, string theory must be wrong.

What disproved string theory?

The Chandra X-ray couldn’t find any extremely low-mass particles in the Perseus galaxy cluster. What now? NASA’s Chandra X-ray Observatory helped power an experiment that might refute string theory. Experimentation in real life based on string theory is still pretty new, with much to discover.

Is string theory false?

Many physicists consider string theory our best hope for combining quantum physics and gravity into a unified theory of everything. Yet a contrary opinion is that the concept is practically pseudoscience, because it seems to be nearly impossible to test through experiments.

Is string theory fail?

String theory has so far failed to live up to its promise as a way to unite gravity and quantum mechanics. At the same time, it has blossomed into one of the most useful sets of tools in science.

Why is string theory not falsifiable?

String Theory (ST) is currently NOT falsifiable: it does not make any testable predictions. A scientific theory may be underdetermined, meaning that even though it might not be testable today (for reasons such as technological limitations, etc), it might in the future.

Is string theory a physics or math?

Thus string theory is a theory of quantum gravity. Because string theory potentially provides a unified description of gravity and particle physics, it is a candidate for a theory of everything, a self-contained mathematical model that describes all fundamental forces and forms of matter.

How old is Michio Kaku?

74 years (January 24, 1947)
Michio Kaku/Age

Michio Kaku (Japanese: カク ミチオ, 加来 道雄, /ˈmiːtʃioʊ ˈkɑːkuː/; born January 24, 1947) is an American theoretical physicist, futurist, and popularizer of science (science communicator). He is a professor of theoretical physics in the City College of New York and CUNY Graduate Center.

What is string theory in physics?

In the field of particle physics, string theory brings together quantum mechanics and Albert Einstein’s general theory of relativity.

Why are there so many string theory models that are wrong?

The criticism you raise that there are lots of speculative models that have no known relevance for the description of nature has very little to do with string theory but is a general disease of the research area. Lots of theorists produce lots of models that have no chance of ever being tested or ruled out because that’s how they earn a living.

What is the probability that string theory is correct?

Polchinski explained a computation that shows that string theory is 98.5\% likely to be correct, going on to claim that the probability is actually higher: “something over 3 sigma” (i.e. over 99.7\%). The only contribution from a physicist that I’ve seen that argued the case for the failure of string theory was that from Carlo Rovelli, see here.

What are the best books to learn about string theory?

We have also drawn on some ideas from the books String Theory and M-Theory (Becker, Becker and Schwarz), Introduction to String Theory (Polchinski), String Theory in a Nutshell (McMahon) and Superstring Theory (Green, Schwarz and Witten), along with the lecture notes of David Tong, sometimes word-for-word.