The Quantum Branching Universe (QBU)

Summary

Formal framework for representing all physically possible quantum timelines as directed acyclic graph (DAG).

Structure: QBU = (V, E) where:

• V = set of all quantum events
• E = directed edges indicating temporal/causal ordering
• Paths through DAG = distinct timelines

Ancestor Event: Ea precedes Eb if all timelines through Eb necessarily pass through Ea.

Pattern Identifiers (PIs): Precise, reproducible patterns selecting timeline subsets:

• Strong PIs: All matching timelines share common ancestor (strict causal clarity). Examples: genotypes, neural connectomes, specific quantum states.
• Weak PIs: No common ancestor required (cultural/historical identification). Examples: names, cultural labels, general events.

Operations:

• Match: Select timelines containing pattern
• Select: Identify subset matching PI
• Ancestor/Descendant: Trace causal relationships

Block Universe Relationship: QBU extends classical Block Universe (static 4D spacetime). QBU = vast structure of potentially infinite distinct block universes, each representing unique deterministic timeline. Branching characterizes structural relationships at quantum divergence points, not dynamic progression.

Key Insight: Enables rigorous exploration of causality, counterfactual reasoning, choice by modeling alternative outcomes as equally real, coexisting timelines.

Tags

• quantum
• multiverse
• causality
• physics
• models

Cross-References

• Related: The Physics of Agency, Part 7: Branching Realities — Agency in the Multiverse
• Related: Many-Worlds Interpretation (Everett) [external]

Notes

• Foundational formalism for axionic philosophy
• DAG structure enables computational/mathematical analysis
• Strong vs Weak PI distinction becomes central methodological tool
• All later quantum ethics/decision theory builds on this framework