Table of Contents

## What does string theory say about dimensions?

String theory posits that the world is made of incredibly small strings vibrating in a ten-dimensional spacetime. Three years ago it was discovered that the five distinct types of string theory were actually different limits of “M theory,” an eleven-dimensional theory that includes supergravity.

**What are the 11 dimensions according to string theory?**

The 11th dimension is a characteristic of spacetime that has been proposed as a possible answer to questions that arise in Superstring Theory, which involves the existence of 9 dimensions of space and 1 dimension of time.

### Why does string theory require 26 dimensions?

To account for all of the physical characteristics of the universe, strings would have to vibrate in multiple dimensions. So there are theories that try to make a TOE with vibrations in 10 dimensions, another in 11 dimensions and another in 26 dimensions.

**Why does string theory require 10 dimensions?**

Any more dimensions would result in too much supersymmetry and a theoretical structure too simple to explain the complexity of the natural world. This is reminiscent of Joe Polchinski’s argument (somewhat tongue-in-cheek, somewhat serious) that all attempts to quantize gravity should eventually lead to string theory.

#### What is a dimension string architecture?

Dimensions. As outlined previously, drawings are often not reproduced to scale, so a vital element contained on all architectural drawings are the annotated dimensions shown as dimension “strings”.

**Why does string theory need 26 dimensions?**

## What exists in the 11th dimension?

In an attempt to answer these questions, some physicists have suggested that there exists an 11th dimension, which is compactified like the other six spatial dimensions we do not directly observe. Superstring theory with the inclusion of the 11th dimension is sometimes called M theory or the theory of everything (TOE).