How could all four fundamental forces be one single force at the beginning of the universe? Did this single force then behave like all four at the same time? How do we know that?

Question

How could all four fundamental forces be one single force at the beginning of the universe? Did this single force then behave like all four at the same time? How do we know that?

In: 26

Answer 1

They weren’t a single force, only the Weak force and Gravity technically existed after the Big Bang. Because there weren’t any protons, neutrons or electrons, nothing could make use of the Strong force or Electromagnetism.