# Scalable tool (engine) for simulating the universe

Does there exist a large scale scalable tool (engine) for simulating the universe that incorporates both quantum mechanics and cosmology, i.e. micro & macro scales?

(It would be best if this tool simulated the entire universe using quantum mechanics only, without any corrections to the model that come from the macro scale)

• No, and it would be darn near impossible to do so for many reasons (computational requirements being key). You might be interested in this arxiv paper Nov 14 '14 at 21:43
• Also, why do you expect the entire universe can be modeled by quantum mechanics alone? Nov 14 '14 at 21:47
• According to Douglas Adams, the Earth was created as the computer to answer just one such question (the Ultimate Question of Life, the Universe, and Everything). I suppose that by extrapolation, the universe is actually a giant simulator of the universe - and you would need something that big to do a half decent job... Nov 14 '14 at 21:47
• Somebody already started the analog simulator. Alas, we seem to be inside it! Nov 14 '14 at 21:48
• @tesgoe: No, we do not have the capability to do what you think can be done. The trillion body problem was numerically modeled about two years ago (a hydrodynamic evolution of the universe). The number of particles in the universe exceeds $10^9$ by about 71 orders of magnitude. What you propose is beyond absurd at this point in time. Nov 15 '14 at 1:24