If, immediately after the Big Bang, all matter and energy in the universe traveled faster than the speed of light without slowing down, it would have significant implications for our understanding of physics. However, it is important to note that this scenario goes against our current understanding of the laws of physics, specifically the theory of relativity.
According to the theory of relativity, as an object with mass approaches the speed of light, its energy and momentum increase infinitely. This means that it would require an infinite amount of energy to accelerate an object with mass to the speed of light. Since matter and energy are fundamentally interconnected, it is not clear how all matter and energy could travel faster than light without violating these principles.
However, if we were to consider a purely hypothetical scenario where this were possible, several consequences could arise:
Causality violations: If matter and energy traveled faster than light without any limitations, it would lead to violations of causality. Causality refers to the idea that cause and effect should follow a particular chronological order. If information or effects could propagate faster than light, it could lead to paradoxes and a breakdown of our understanding of cause and effect.
Relativistic effects: As objects approach the speed of light, they experience time dilation and length contraction. If matter and energy were to surpass the speed of light, these effects could become even more extreme. Time dilation could potentially cause time to flow backward from the perspective of an outside observer, and length contraction could compress objects in the direction of motion.
Photon interactions: Photons, particles of light, are massless and already travel at the speed of light. If matter and energy were to exceed the speed of light, it is unclear how they would interact with photons. It could lead to complications in our understanding of electromagnetism and the behavior of light.
It is important to reiterate that this scenario goes beyond our current understanding of physics, and it is purely speculative. Our understanding of the laws of physics, as described by the theory of relativity, sets a fundamental limit on the speed of light and the behavior of matter and energy.