The concept of the multiverse and the collision of branes is a speculative idea proposed in certain versions of string theory and cosmology. While it is an intriguing concept, it is important to note that the multiverse hypothesis and the collision of branes are still under active scientific investigation and not yet fully confirmed.
Regarding the first principle of thermodynamics, also known as the law of conservation of energy, it states that energy cannot be created or destroyed; it can only be transformed from one form to another. This principle is a fundamental concept in physics and has been observed to hold true in numerous physical systems.
Based on the first principle of thermodynamics, it is reasonable to infer that energy or some underlying quantum field could potentially be eternal in the sense that it has always existed and will always exist in some form. However, this principle alone does not provide definitive evidence for the existence of a multiverse or the specific mechanisms behind the origin or eternal nature of energy.
Exploring the nature of the universe, the origin of energy, and the existence of a multiverse requires a deeper understanding of physics and cosmology, and it remains an active area of scientific research. Scientists are constantly working to develop and refine theories that can provide a comprehensive explanation for these complex phenomena.