Unified field theory classical field theory and, two years later, that of Theodor Kaluza, who extended General Relativity to five dimensions. Continuing in this latter direction, Oscar Klein proposed in 1926 that the fourth spatial dimension be curled up into a small, unobserved circle. In Kaluza–Klein theory, the gravitational curvature of the extra spatial direction behaves as an additional force similar to electromagnetism. These and other models of electromagnetism and gravity were pursued by Albert Einstein in his attempts at a classical unified field theory. By 1930 Einstein had already considered the Einstein–Maxwell–Dirac System [Dongen]. This system is (heuristically) the super-classical [Varadarajan] limit
Unified Theory (band) they relocated to Los Angeles and began recording their debut album. The album was recorded at Stank Face Laboratories and Lucky Dog Studios in Seattle, and was produced by both Thorn and Smith, and mixed by Andy Wallace. Jon Bolton and Matthew Steer contributed additional drums to the recording, while string arrangements were handled by Dave Dysart. In June, Unified Theory shot a music video for their first single "California" with director Bobby G, before touring the US in July. The band's debut album entitled "Unified Theory" was released on August 15, 2000, through 3.33 Music Group in North America