Baryogenesis

before 10⁻¹¹ s · Very Early Universe

Temperature (K): 1000000000000000
When: before 10⁻¹¹ s
Redshift: —
Era: Very Early Universe
Seconds After Big Bang: 1e-11

What Happened

Some process favoured matter over antimatter by about one part in a billion. Everything made of atoms is that leftover; the other billion parts annihilated into the photons now arriving as the microwave background. How it happened is unsolved.

Researchers

Andrei Sakharov

Equations

Standard Model Lagrangian Mass–Energy Equivalence

Theories

The Standard Model Grand Unified Theories

Referenced by

equation

Mass–Energy Equivalence Standard Model Lagrangian

researcher

Andrei Sakharov

theory

Grand Unified Theories The Standard Model

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From the Cosmic Timeline database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.