Whr did the elecrons come from?

sruthisupriya · Mar 1, 2007

when we talk abt BBN, we only talk abt the nucleons. whr did th electrons come from? was it just beta decay or something else?

hellfire · Mar 1, 2007

Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.

windscar · Apr 16, 2007

At what time frame do photon's appear in the current Big Bang Theory?

mathman · Apr 16, 2007

At what time frame do photon's appear in the current Big Bang Theory?

At the very beginning.

christianjb · Apr 16, 2007

hellfire said: ↑

Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.

'Leptogenesis'. That's such a beautiful word! Now to casually drop that into a conversation when buying milk.

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Whr did the elecrons come from?

sruthisupriya

hellfire

windscar

mathman

christianjb