| graviton as closed string
Superstring theory says that a graviton is made from closed strings (mentioned in Brian Greene's books: Elegant Universe and Fabric of the Cosmos).
what happens when two closed string loops are linked together? What kind of topology is this linked loops? For the static case, this can be represented by Hopf ring. Actually linked closed strings can be represented by the square of energies. Each loop represents an energy, say E1, and the other as E2. The product of E1 and E2 is the square of energy. In snap notation of unit scalar:
E1E2 = (E1 - E2)U, where U is the unit scalar of energy. When E1=0 then E2 is also equal to zero. When E1 approaches infinity (radius of the circular loop approaches infinity, so that the circle is mapped into a straight line), E2 approaches unity (when the radius approaches zero, so that the circle approaches a point of zero-dimension. But all zero-dimensional objects are also called as scalar quantities). |