String Theory & Dimensions: Interactions Explained

[Pjpic]

Does string theory use multiple dimensions to explain why certain particles don't interact with others? If so, why wouldn't shape be used; as it is when explaining why certain proteins don't interact with cells?

 

[CompuChip]

As far as I'm concerned, the multiple dimensions used in string theory have a purely mathematical origin. The problem does not arise when looking at interactions, but when trying to make "classical" string theory compatible with quantum mechanics. Adding interactions only makes things more complicated. When you do the math, you get a (more-or-less) inconsistent theory, unless the number of dimensions of spacetime is exactly right. AFAIK there is no physical argument that explains or even makes plausible why there should be so many dimensions.

 

[sir-pinski]

String theory does indeed use multiple dimensions to explain the interactions between particles. In this theory, the fundamental building blocks of the universe are not point-like particles, but rather tiny, vibrating strings. These strings exist in a higher-dimensional space, known as the "bulk," which is made up of more than the three dimensions (length, width, and height) that we experience in our everyday lives.

The reason why shape is not used to explain why certain particles don't interact with others in string theory is because the shape of the strings themselves is constantly changing and evolving. This is due to their vibrations, which determine the properties and behavior of the particles they make up. Therefore, it is not the shape of the strings that determines their interactions, but rather their vibrations in the higher-dimensional space.

In contrast, when explaining why certain proteins don't interact with cells, the shape of the proteins plays a crucial role. This is because the shape of a protein determines its function and how it interacts with other molecules in the cell. However, in string theory, the shape of the strings is constantly changing and is not a fixed characteristic that determines their interactions.

In summary, string theory uses multiple dimensions to explain particle interactions, and the shape of the strings themselves is not a determining factor in these interactions. This is because the strings are constantly vibrating and evolving in the higher-dimensional space, rather than having a fixed shape like proteins in cells.