Undergrad Where Did the Universe's Antimatter Go?

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The discussion centers on the apparent imbalance of matter and antimatter in the universe, questioning why they are not present in equal amounts despite theories suggesting they originated from a singular event. Participants note that the concept of the universe being born from nothing is misleading, as current cosmological models do not address a creation event but rather describe the evolution of the universe from a hot, dense state. There is extensive literature on the topic, and participants encourage exploring established sources for deeper understanding. The Big Bang Theory provides insights into the universe's early conditions but does not explain what preceded it. Overall, the conversation emphasizes the complexity of the universe's origins and the ongoing mysteries surrounding matter and antimatter.
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If the universe was born from nothing then what are the possible reasons that we don’t see the same amount of matter and antimatter now?(if it’s a scientifically correct question)
 
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Pouya Pourkarim said:
If the universe was born from nothing
It is unclear if that is a useful description.
Pouya Pourkarim said:
then what are the possible reasons that we don’t see the same amount of matter and antimatter now?
There is tons of literature about it. What did you read so far?
Your question is very general, and it doesn't make sense to write books about it here because these books have been written already. As basic introduction, the Wikipedia article isn't a bad start.
 
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Pouya Pourkarim said:
If the universe was born from nothing ...
As mfb already pointed out, it was not. Saying that it was is a widespread version in all pop-science presentations. The actual current model of Cosmology, the Big Bang Theory, is silent about any creation event. That is, we have a verifiable theory of what the universe was like at a point in the past and how it evolved to what it is today but we do not know what was going on previous to that point in time (and that point in time is NOT a creation event, it's a time when the universe was an incredibly dense, incredibly hot, plasma of unknown (possibly infinite) extent
 
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