Cosmic Architect

A C++ simulation of universe evolution based on fundamental cosmological parameters.

Overview

Cosmic Architect simulates different possible universes and calculates their evolution through major milestones, from the Big Bang to their ultimate fate, based on fundamental physical parameters.

Codebase Structure

1. Core Classes

UniverseParameters

Holds fundamental parameters of a universe:

• Matter density (Ω_m)
• Dark energy density (Ω_Λ)
• Hubble constant (H₀)
• Matter/antimatter ratio
• Dark energy equation of state (w)
• Dark matter ratio
• Initial energy density

2. Milestone System

Base Milestone Class

• Abstract base class for all cosmic events
• Each milestone calculates its timestamp in Gyr (billion years)
• Provides JSON serialization

Key Milestone Types

• BigBang: t = 0
• Inflation: Very early universe (~10⁻⁴⁹ Gyr)
• ParticleEra: Formation of fundamental particles
• NucleosynthesisBBN: Formation of light elements
• Recombination: Atoms form, universe becomes transparent
• DarkAges: Period before first stars
• FirstStars: Initial star formation
• GalaxyFormation: Galaxy assembly
• AcceleratedExpansion: Dark energy dominance

Universe Endings

• BigRip: Universe tears apart (w < -1)
• BigCrunch: Universe recollapses (Ω > 1)
• HeatDeath: Eternal expansion

3. Testing

The testing framework includes various universe scenarios:

1. Baryon-Only Universe
2. Matter-Dominated Universe
3. Phantom Energy Universe
4. Radiation-Baryon Universe
5. Baryon-Poor Universe

Each scenario tests milestone timings and universe fate.

4. Key Physics

Universe fate is determined by:

• Total density (Ω_total)
• Dark energy equation of state (w)
• Matter/dark matter ratio
• Initial energy conditions

5. Usage Example

// Create universe with parameters
SimulatedUniverse universe(
    matterDensity,
    darkEnergyDensity,
    hubbleConstant,
    matterAntimatterRatio
);

// Generate timeline of events
auto timeline = universe.generateTimeline();

// Export to JSON
timeline->saveToFile("universe_timeline.json");

Building

# Create build directory
mkdir -p build
cd build

# Configure and build
cmake ..
make

# Run UI
./frontend/cosmic_architect_ui

Dependencies

• C++17 or later
• CMake 3.10 or later
• Google Test (for testing)