# What do superstring theories try to explain?

## What do superstring theories try to explain?

Superstring theory is an attempt to explain all of the particles and fundamental forces of nature in one theory by modeling them as vibrations of tiny supersymmetric strings.

### Who discovered superstring theory?

Michio Kaku- Physicist & Co-founder of String Field Theory.

#### How many dimensions are there in superstring theory?

ten different dimensions

In fact, the theoretical framework of Superstring Theory posits that the universe exists in ten different dimensions. These different aspects are what govern the universe, the fundamental forces of nature, and all the elementary particles contained within.

**Why is it called M-theory?**

Then, in 1995, the physicist Edward Witten discovered the mother of all string theories. He found various indications that the perturbative string theories fit together into a coherent nonperturbative theory, which he dubbed M-theory.

**Why is it called string theory?**

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-dimensional point particles.

## Who created superstring theory?

Brian Greene explains the basic idea of string theory in under three minutes. In 1905 Einstein unified space and time (see space-time) with his special theory of relativity, showing that motion through space affects the passage of time.

### Who is the founder of superstring theory?

Werner Heisenberg

String theory represents an outgrowth of S-matrix theory, a research program begun by Werner Heisenberg in 1943 following John Archibald Wheeler’s 1937 introduction of the S-matrix.

#### Who proposed the M-theory?

physicist Edward Witten

Then, in 1995, the physicist Edward Witten discovered the mother of all string theories. He found various indications that the perturbative string theories fit together into a coherent nonperturbative theory, which he dubbed M-theory.

**Why does M-theory have 11 dimensions?**

These two types of symmetry look very different but modern theories treat them as two sides of the same coin. Rotations in a higher-dimensional space can turn one supersymmetry into another. So the limit on the number of supersymmetries puts a limit on the number of extra dimensions.

**What are the characteristics of string theory?**

String theory describes how these strings propagate through space and interact with each other. On distance scales larger than the string scale, a string looks just like an ordinary particle, with its mass, charge, and other properties determined by the vibrational state of the string.

## How big is a superstring?

about 10 ^35 meter long

The strings postulated by the theory are about 10 ^35 meter long, or some 10^20 times smaller than the diameter of the proton. The differences between superstring theories and more conventional theories at such minute scales are essential to the consistency and predictive power of the theory.

### What is the difference between string theory and Superstring Theory?

Superstring theory, also called string theory, is the current formulation of this ongoing quest. String theory attempts to unify all four forces, and in so doing, unify general relativity and quantum mechanics. At its core is a fairly simple idea—all particles are made of tiny vibrating strands of energy.