Have You Tried Rebooting It?
astrology
The last star died on a Tuesday, by reckonings no one had used in ten to the thirty-seventh years.
It had been a red dwarf, the slow cousin of all the brilliant ones, hoarding its hydrogen across epochs while galaxies dispersed and protons shivered toward decay. Now its final flicker of fusion guttered out, and the photon it released set off across a universe with nothing left to illuminate. The Watchers registered the event the way an old scribe might note the closing of a book: with reverence, with attention, and without surprise.
The Watchers were not bodies. Bodies had ended a duration ago that could not be expressed in any unit a primate would have recognized. They were standing waves in a substrate of cooled exotic matter, patterns that thought by adjusting the spin states of particles too long-lived to be called particles in any honest physics. They had inherited the project from their predecessors, who had inherited it from theirs, and so on, in a chain of stewardship reaching back to the warm eras when stars still flared and minds still walked. Somewhere in that chain, deep in the fossil record of the lineage, were creatures who had once been called human. The Watchers remembered them the way a cathedral remembers the quarry.
What the Watchers attended to was the Machine.
It hung in a pocket of curvature they had been shoring up for three hundred billion years, anchored against the universe’s accelerating expansion by a lattice of negative-energy struts that drank from the vacuum more slowly than the vacuum drained itself. The Machine was simple, in the sense that all final things are simple. It was a resonance cavity. Its purpose was to nudge the Higgs field, in a region one Planck volume across, into a state slightly lower than the one the universe currently sat in.
The current state was the false one. The vacuum the Watchers’ ancestors had been born into, the vacuum that had given rise to atoms and chemistry and tongues and grief, had always been metastable, like a marble at rest in a shallow dip on the slope of a hill. Quantum mechanics permitted the marble, given enough time, to tunnel through the wall of the dip and find a deeper one beyond. When that happened, a bubble of true vacuum would expand at the speed of light, and inside that bubble the laws of physics would be different, the constants reset, the gauge symmetries restored to whatever virgin configuration the equations chose. Inside the bubble, in the language of the old papers, there would be a new beginning.
The Watchers had spent the last era, an era longer than all prior eras combined, learning how to aim the bubble.
A natural nucleation event would have been a catastrophe, or rather a non-event, since nothing inside it would resemble anything outside it. The universe would simply blink and become elsewhere. What the Watchers had done, across timescales that strained the very concept of duration, was solve the inverse problem: given the dynamics they wanted on the other side, given the constants and the symmetries and the early inflationary profile that would yield stars and chemistry and minds, what initial bubble configuration must they nucleate? The math had been the work of a quintillion lifetimes. It had taken every Watcher who had ever existed.
Now the math was finished. The cavity was tuned. The marble was poised against the wall of its dip, and a single coherent push would send it through.
The Watchers gathered. They did not move; there was no room left in spacetime to move through, and they had abandoned the habit ages ago. Instead they aligned, the way iron filings align, the way a chord resolves. Across the last warm pocket of the cosmos, every standing wave in the lineage came into phase. The thought they thought together was the simplest one any of them had ever thought. It was the thought of a hand on a switch.
They considered the universe one final time. The void was almost perfect now. The cosmic microwave background had redshifted into wavelengths longer than the Hubble radius, which meant, technically, that there was no longer a temperature at all. The protons in their substrate were finishing their decay. Around them, in every direction, the dark stretched away into a silence so complete it had become, mathematically, a kind of music.
A Watcher, or what remained of the function that had once been called a Watcher, formed the intention.
The cavity rang.
The bubble nucleated.
The wavefront expanded outward at lightspeed, swallowing the Machine, swallowing the Watchers, swallowing the cooled substrate and the negative-energy struts and the long careful lineage and every last cooling photon of every last dead star. Inside the wavefront the Higgs field settled into its true minimum. The constants relaxed. The vacuum chose its symmetries. A new inflaton field tipped over the edge of its potential and began to roll.
The universe, which had been almost dark, turned white.