[Utah-astronomy] Speed of Light Expansion due to reduced vacuum Permittivity

James Clerk Maxwell discovered the speed of light in his 19th century research. He expressed it as 1 over the square root of (vacuum permeability time’s vacuum permittivity). These vacuum properties can be reduced in the presence of negative energy. This negative energy is defined in terms of a lack of zero-point-energy vacuum fluctuations. This condition does exist in a space known as a casimir cavity. This means it is possible to expand the speed of light to be faster then c. An article related to this can be found in Marcel Urban, François Couchot, Xavier Sarazin, Arache Djannati-Atai. The quantum vacuum as the origin of the speed of light. The European Physical Journal D, 2013; 67 (3) DOI: 10.1140/epjd/e2013-30578-7