Force strengths depend on no-spin closed-string 11th-space-time-dimension scalar length {dilaton}. Short dilatons represent weak nuclear forces. Long dilatons represent strong nuclear forces. Dilaton lengths represent electromagnetism, and dilaton length variations change electromagnetic fields.
Before universe origin, dilatons are long, and forces are strong. At universe origin, dilatons are short, and forces are weak. Observing intergalactic magnetic-field changes is a test for dilatons and so can indicate universe-origin conditions.
Physical Sciences>Physics>String Theory>Particles
5-Physics-String Theory-Particles
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Date Modified: 2022.0224