Unified Theory, previously Luma, were an American rock band from Seattle, Washington, formed in 1998. The lineup consisted of Chris Shinn (vocals, guitar), formerly of Celia Green, former Blind Melon members Christopher Thorn (guitar) and Brad Smith (bass) as well as Dave Krusen (drums) formerly of Pearl Jam.

Following the death of singer Shannon Hoon, former Blind Melon members Christopher Thorn and Brad Smith moved to Seattle and began working on a new project. This project was put on hold following Thorn's move to Los Angeles. However, after meeting former Celia Green singer Chris Shinn, they regrouped with Smith in Seattle and, with the addition of former Pearl Jam drummer Dave Krusen, formed Luma in 1998. The following year, they released a self-titled EP before renaming themselves Unified Theory, after Albert Einstein's unified field theory, releasing their self-titled debut album in 2000.