String theory - Wikipedia
网页In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. String theory describes how these strings propagate through space and interact with each other.
网页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
String Theory | Brilliant Math & Science Wiki
网页String theory is a candidate for a unified theory of the four fundamental forces of nature: electromagnetism, the weak force, the strong force, and gravity. Particles in string theory are identified with particular patterns of vibration of a one-dimensional elementary object called a …
网页First, string theory is capable of generating a vast number of quantum field theories (QFTs) in various dimensions. There are five types of string theories - Type I, IIA, IIB, Heterotic SO(32), and E 8 ×E 8 - and M-theory is the limit of large dilaton expectation value in Type IIA string theory. These theories can contain various types of ...
Type I string theory - Wikipedia
网页In theoretical physics, type I string theory is one of five consistent supersymmetric string theories in ten dimensions. It is the only one whose strings are unoriented (both orientations of a string are equivalent) and the only one which perturbatively contains not only closed strings, but also open strings.
String theory | Explanation & Definition | Britannica
网页2024年8月2日 · string theory, in particle physics, a theory that attempts to merge quantum mechanics with Albert Einstein ’s general theory of relativity. The name string theory comes from the modeling of subatomic particles as tiny one-dimensional “stringlike” entities rather than the more conventional approach in which they are modeled as zero ...
[2311.18111] Introduction to String Theory - arXiv.org
网页2023年11月29日 · Introduction to String Theory. These are the lecture notes of the introductory String Theory course held by one of the authors for the master program of Theoretical Physics at Turin University. The world-sheet approach to String Theory is pedagogically introduced in the framework of the bosonic string and of the superstring.
网页String theory is an ambitious project. It purports to be an all-encompassing theory of the universe, unifying the forces of nature, including gravity, in a single quantum mechanical framework. The premise of string theory is that, at the fundamental level, matter does not consist of point-particles but rather of tiny loops of string.
网页all five supersymmetric string theories to one another and lead to the picture of one single underlying theory, called M-theory. So far, only various limits of this theory are known, while the problem of finding an intrinsic, non-perturbative and background-independent definition is unsolved.
网页Introduction to String Theory. Draft version, March 9, 2022. Andreas Braun Durham. – based on notes by Iñaki García Etxebarria –. Contents. 1 The relativistic point particle. 3. 1.1 The classical particle as a theory of gravity in one dimension . . . . . . . . 3.
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