Holy fucking shit. Good thing you're versed in physics and math, because I have no idea what any of that says.
The worse is that ugly equation describes the Standard model without gravity. Adding gravity to a quantum theory has not been accomplished yet, but who knows how much uglier that equation would become.
Worse than that, our theory only covers ordinary matter, which comprises about 5% of the universe - the rest, 20% Dark Matter, and 75% Dark energy, we have no theory (no math equations) to describe them.
Welcome to my world.