Is There a Field With a Huge Potential Energy?

If you want to describe the universe as expanding very, very rapidly, you need a field that has a huge amount of potential energy. We're talking about no particles, but still a field with a lot of energy. So it seems io know, we have all these fields to describe all these particles, and they're all trying to make space bigger all the time. But we're tring to explain this particular period in the universes history where it thinks inflated, exploded, expanded super fastin ta supertoied amount of power.