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Peter J. Adshead

Profile picture for Peter J.  Adshead

Contact Information

1110 W. Green
M/C 704
Urbana, IL 61801

Research Areas

Associate Professor of Physics


Professor Adshead received his PhD in Physics in 2010 from Yale University after receiving his BSc. with first class honors at the University of Canterbury in Christchurch, New Zealand in 2004. He was a KICP fellow at the Kavli Institute for Cosmological Physics at the University of Chicago and a postdoctoral associate at the University of Cambridge before joining the faculty at the University of Illinois in 2014.

Research Interests


Research Description

Professor Adshead works on a broad range of topics in the very early universe, focussing primarily on the physics of inflation and their imprint on the cosmic microwave background radiation, the reheating phase transition that must end inflation and begin the hot Big Bang, and the connections between high-energy particle physics and the early universe.

Additional Campus Affiliations

Associate Professor, Physics
Associate Professor, Astronomy

Recent Publications

Adshead, P., Giblin, J. T., Grutkoski, R., & Weiner, Z. J. (2024). Gauge preheating with full general relativity. Journal of Cosmology and Astroparticle Physics, 2024(3), Article 017.

Adshead, P., Lozanov, K. D., & Weiner, Z. J. (2023). Dark photon dark matter from an oscillating dilaton. Physical Review D, 107(8), Article 083519.

Abazajian, K., Addison, G. E., Adshead, P., Ahmed, Z., Akerib, D., Ali, A., Allen, S. W., Alonso, D., Alvarez, M., Amin, M. A., Anderson, A., Arnold, K. S., Ashton, P., Baccigalupi, C., Bard, D., Barkats, D., Barron, D., Barry, P. S., Bartlett, J. G., ... Zonca, A. (2022). CMB-S4: Forecasting Constraints on Primordial Gravitational Waves. Astrophysical Journal, 926(1), Article 54.

Adshead, P., & Lozanov, K. D. (2022). Axion anomalies. Journal of High Energy Physics, 2022(8), Article 77.

Adshead, P., Ralegankar, P., & Shelton, J. (2022). Dark radiation constraints on portal interactions with hidden sectors. Journal of Cosmology and Astroparticle Physics, 2022(9), Article 056.

View all publications on Illinois Experts