Could anti-mass explain the missing anti-matter from the big bang?

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The discussion explores the concept of anti-mass as a potential explanation for the missing antimatter from the Big Bang. It suggests that if mass creates hollows in space-time, anti-mass could create bumps, forming a network of matter similar to the cosmic web. The idea posits that the existence of anti-mass might clarify the matter-antimatter imbalance observed in the universe. Antimatter, while having positive mass, behaves like normal matter and does not exhibit negative mass properties. The ongoing experiments at the Tevatron further support the understanding of antimatter's behavior, indicating that the search for new physics may be necessary to fully explain these phenomena.
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The rubber-sheet model of gravity pictures gravity as the effect of hollows in space-time due to the mass of an object. If the model included bumps in space-time as well, the effect would be to channel all the mass into the valleys between the bumps forming a network of matter across the sheet. Turning the flat sheet into three dimensions, with space-time in the fourth, we would end up with a foam-like structure of voids surrounded by a 3-D network of matter, very much like the cosmic web. What could cause such bumps in space-time? If mass causes the hollows anti-mass would cause bumps, but can such a concept as anti-mass exist? If it did it might help explain the missing anti-mater from the big bang.
 
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Antimatter does not have negative mass. It has positive mass and attracts things just like normal matter. The Tevatron has been colliding protons with antiprotons since it was built in 1983. When an E field is applied, the antiprotons accelerate in the normal way expected for a particle having mass equal to a proton and a negative charge. They circulate in the machine for hours at a time, and have never been observed to "fall up"!
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
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Hi, I’m pretty new to cosmology and I’m trying to get my head around the Big Bang and the potential infinite extent of the universe as a whole. There’s lots of misleading info out there but this forum and a few others have helped me and I just wanted to check I have the right idea. The Big Bang was the creation of space and time. At this instant t=0 space was infinite in size but the scale factor was zero. I’m picturing it (hopefully correctly) like an excel spreadsheet with infinite...
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