Retrieving "Higher Dimensions" from the archives

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1. Gravitational Forces

   Linked via "higher dimensions"

   In quantum field theory, gravity is expected to be mediated by a hypothetical elementary particle called the graviton. This particle would be massless and possess a spin of 2. Unlike the photon, the graviton has yet to be experimentally detected due to the extreme weakness of gravitational interactions at quantum scales.
   The theoretical necessity for the graviton arises from the attempt to unify grav…