The conversation between human and AI assistant.
Can energy be borrowed from vacuum(to be returned immediately)? If this happens how do we know vacuum energy is real if virtual particles don't exist?
How does the concept of vacuum energy relate to the expansion of the universe?
The concept of vacuum energy is related to the expansion of the universe because it is thought to be responsible for driving the acceleration of the expansion. This idea is known as dark energy, and it is the subject of ongoing research and debate in the field of cosmology.