8.3 Cosmological Engineering: Modifying $\hat{U}$ Rules, Creating Artificial Vacuum, Even Restarting the Big Bang

In previous chapters, we discussed how civilizations maximize computational power through implosion (black hole-ization) and Dyson sphere heat dissipation. This still seeks optimal solutions within existing physical law frameworks. However, if our QCA ontology is correct, then the universe itself is code. This opens a door to ultimate technology: modifying code.

This section will explore the highest stage of civilization evolution—Cosmological Engineering. This is no longer about how to survive in the universe, but about how to reconstruct the universe. We will discuss possibilities from creating artificial vacuum bubbles to restarting the universe by fine-tuning physical constants.

8.3.1 Modifying $\hat{U}$: Local Rewriting of Physical Laws

In QCA, physical laws are defined by local evolution operator $\hat{U}$. Usually we think $\hat{U}$ is unified across the universe and immutable. But under the Micro-Parallelism Axiom (Chapter 2), $\hat{U}$ is composed of a series of more fundamental logic gates.

With sufficient energy and control precision, can advanced civilizations change $\hat{U}$’s structure in local regions?

Theoretical Possibility:

In condensed matter physics, we can create artificial vacuums with different effective physical laws (such as Dirac cones, topological insulators) by designing material lattice structures.

Similarly, at QCA’s Planck scale, if we can manipulate lattice point connection methods (changing graph $\Lambda$’s topology), we can locally change light speed $c$, coupling constants $g$, even create entirely new gauge fields.

Application Prospects:

1. Inertia-Free Propulsion: By modifying local mass generation mechanisms ($\theta$ angle), make inertial mass $m\to 0$ around spacecraft, achieving instantaneous acceleration.

2. Superluminal Communication: By changing local lattice point connectivity (adding shortcuts), locally create “fast lanes” with $c^{\prime }>c$.

3. Vacuum Decay Weapons: Induce local vacuum transition from metastable to lower energy level, releasing vacuum bubbles that devour galaxies (this may be one explanation for Fermi Paradox: advanced civilizations all self-destructed in experiments).

8.3.2 Creating Artificial Vacuum: Baby Universes

If modifying the existing universe is too risky, a safer strategy is to create one ourselves.

According to Alan Guth’s inflation theory, only minimal matter (a few grams) and extremely special initial conditions (false vacuum) are needed to trigger new inflation, squeezing out an independent “baby universe” in our spacetime.

From QCA perspective, this corresponds to creating a new subgraph in the network, connected to the parent network through a narrow channel (wormhole).

• Independent Evolution: The sub-universe can have completely different $\widehat{U^{\prime }}$ rules. Civilizations can upload themselves to this new universe, escaping the parent universe’s heat death or big rip.

• Computational Sandbox: This can also serve as a perfect laboratory for simulating different physical laws, even running computational problems unsolvable in the parent universe.

8.3.3 Restarting the Big Bang: Engineering Implementation of Cyclic Universe

The universe’s ultimate problem is entropy increase. No matter how civilizations resist, if the entire universe’s free energy is exhausted, QCA will stop computing (entering dead loops or heat death).

The only escape path is restarting the system.

Roger Penrose proposed Conformal Cyclic Cosmology (CCC), suggesting that in the distant future, when all black holes evaporate and the universe contains only photons, scale loses meaning, and the distant future is geometrically equivalent to the Big Bang singularity.

Advanced civilizations can actively accelerate this process.

Through precise cosmological engineering, civilizations can coherently guide all matter and information in the universe to a specific final state $|{\Psi }_{\Omega }⟩$.

This final state is designed to have a special entanglement structure, so that at the beginning of the next computational cycle, it naturally evolves into a low-entropy initial state $|{\Psi }_0^{\prime }⟩$.

Corollary 8.3:

The Big Bang may not be a natural random event, but an engineering masterpiece of previous-generation civilizations.

The physical constants we now observe (fine structure constant, proton mass ratio, etc.) may be parameters fine-tuned by previous-generation civilizations, aimed at maximizing this new universe’s ability to produce life and computation.

Conclusion:

Civilization’s mission is not only survival, but inheritance.

At the end of the Negentropy War, we will no longer be residents of the universe; we will become the universe’s parents.

By restarting the Big Bang, we will inscribe life’s code into the underlying logic of the next cycle, achieving true immortality.

(End of Chapter 8)

(Author’s Note: At this point, Part IV “The Destiny of Civilization” concludes. Starting from Fermi Paradox, we deduced implosion, virtual ascension, until cosmological engineering. We see that intelligent life has the potential to evolve from passive observers to active constructors. Next, we will enter the final part of the book—Part V: Return and Transcendence, to explore ultimate questions that transcend physics, even transcend logic.)