Casimir cosmology

In 1998, astronomers discovered that the expansion of universe is accelerating. Somehow, something must have made gravity repulsive on cosmological scales. This was called dark energy; it described by Einstein’s constant; and amounts to about 70% total mass universe. It has been conjectured constant a form vacuum energy, but its prediction from quantum field theory failed many orders magnitude, until recently. Informed empirical evidence Casimir forces, Lifshitz not only produced correct order quantitatively consistent with astronomical data. Moreover, appears resolve tension between measured predicted Hubble constant. There therefore good chance physics explains energy. paper introduces cosmology for practitioners forces as part “The State Quantum Vacuum: Physics in 2020s” edited K. A. Milton. may also be interesting other physicists engineers who wish concise introduction cosmology.