vacuum energy density

The story of life in four spatial dimensions.

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One of the most puzzling questions in modern cosmology is why the density of matter and energy appears to be find tuned to the value that allowed life to evolve. For example the density of mass to energy in the early universe must have been very close to a specific value to explain how stars … Read more

The vacuum catastrophe: A classical interpretation

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The vacuum catastrophe is name given to the disagreement of over 100 orders of magnitude between measured values of the vacuum energy density and the theoretical zero-point energy predicted by Quantum Field Theory.  This discrepancy has been described as “the worst theoretical prediction in the history of physics.” The effects of vacuum energy can be … Read more