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Bubbles created from vacuum fluctuation

Liao Liu·Feng He
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Abstract

We show that the bubbles $S^2\times S^2$can be created from vacuum fluctuation in certain De Sitter universe, so the space-time foam-like structure might really be constructed from bubbles of $S^2\times S^2$ in the very early inflating phase of our universe. But whether such foam-like structure persisted during the later evolution of the universe is a problem unsolved now.

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Liao Liu, Feng He. 2001-01-05. Bubbles created from vacuum fluctuation. https://doi.org/10.1088/0256-307x%2F18%2F8%2F303

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