With Daniel Eisenstein and Wayne Hu, he introduced the idea of using baryon acoustic oscillations as a standard ruler. With Angelica de Oliveira-Costa and Andrew Hamilton, he discovered the anomalous multipole alignment in the WMAP data sometimes referred to as the "axis of evil". With Anthony Aguirre, he developed the cosmological interpretation of quantum mechanics. His 2000 paper on quantum decoherence of neurons concluded that decoherence seems too rapid for Roger Penrose's "quantum microtubule" model of consciousness to be viable.
With Daniel Eisenstein and Wayne Hu, he introduced the idea of using baryon acoustic oscillations as a standard ruler. With Angelica de Oliveira-Costa and Andrew Hamilton, he discovered the anomalous multipole alignment in the WMAP data sometimes referred to as the "axis of evil". With Anthony Aguirre, he developed the cosmological interpretation of quantum mechanics His 2000 paper on quantum decoherence of neurons concluded that decoherence seems too rapid for Roger Penrose's "quantum microtubule" model of consciousness to be viable.