String theory landscape

The string theory landscape refers to the vast array of possible solutions or "vacua" in string theory, each representing a different way the universe could be configured. In string theory, fundamental particles are tiny vibrating strings, and different vibrations produce different particles. The landscape suggests there may be a multitude—possibly billions or even more—of these configurations, each with its own physical laws and constants. This enormous diversity helps explain why our universe has the particular properties it does, as it might be one region among many in a multiverse containing all possible configurations.