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Peter Graham

Peter Graham

Associate Professor of Physics

About

What physics lies beyond the Standard Model and how can we discover it?

Professor Graham is broadly interested in theoretical physics beyond the Standard Model which often involves cosmology, astrophysics, general relativity, and even atomic physics. The Standard Model leaves many questions unanswered including the nature of dark matter and the origins of the weak scale, the cosmological constant, and the fundamental fermion masses. These clues are a guide to building new theories beyond the Standard Model. He recently proposed a new solution to the hierarchy problem which uses dynamical relaxation in the early universe instead of new physics at the weak scale.

Professor Graham is also interested in inventing novel experiments to discover such new physics, frequently using techniques from astrophysics, condensed matter, and atomic physics. He is a proposer and co-PI of the Cosmic Axion Spin Precession Experiment (CASPEr) and the DM Radio experiment. CASPEr uses nuclear magnetic resonance techniques to search for axion dark matter. DM Radio uses high precision magnetometry and electromagnetic resonators to search for hidden photon and axion dark matter. He has also proposed techniques for gravitational wave detection using atom interferometry.

Current areas of focus:

Theory beyond the Standard Model
Dark matter models and detection
Novel experimental proposals for discovering new physics such as axions and gravitational waves
Understanding results from experiments ranging from the LHC to early universe cosmology


CAREER HISTORY:

After completing his undergraduate work at Harvard, Peter Graham received his PhD from Stanford in 2007. He was a postdoctoral research associate for one year with the particle theory group at SLAC and then took a postdoctoral position with the Stanford Institute for Theoretical Physics in the Physics Department. Graham began his appointment as Assistant Professor in the Department of Physics in September 2010.

Honors and Awards:

2017 New Horizons Prize in Physics
DOE Early Career Award 2014
Terman Fellowship, Stanford

Academic Appointments

Associate Professor, Physics

Honors & Awards

New Horizons Prize in Physics, Breakthrough Prize Foundation (2017)
DOE Early Career Award, Department of Energy (2014)
Hellman Faculty Scholar, Hellman Fellows Fund (2013)
Phi Beta Kappa, Harvard University (2002)
Sanderson Award for top senior physics student, Harvard University (2002)

Boards, Advisory Committees, Professional Organizations

Member, Fermi Telescope Collaboration
Chair, Physics Department Graduate Qualifying Exam Committee, Stanford University (2012 - 2013)
Member, Physics Department Graduate Studies Committee, Stanford University (2012 - 2013)
First-Year Graduate Advisor, Stanford University (2012 - 2013)
Co-organizer, SavasFest conference (2012 - 2012)
Lecturer, EPGY summer institute (2011 - 2012)

Professional Education

Ph.D., Stanford University, Physics (2007)
A.M., Harvard University, Physics (2002)
A.B., Harvard University, Physics (2002)

Publications

Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2016). Resonant mode for gravitational wave detectors based on atom interferometry. PHYSICAL REVIEW D, 94(10).

Graham, P. W., Mardon, J., & Rajendran, S. (2016). Vector dark matter from inflationary fluctuations. PHYSICAL REVIEW D, 93(10).

Graham, P. W., Kaplan, D. E., Mardon, J., Rajendran, S., & Terrano, W. A. (2016). Dark matter direct detection with accelerometers. PHYSICAL REVIEW D, 93(7).

Buscaino, B., DeBra, D., Graham, P. W., Gratta, G., & Wiser, T. D. (2015). Testing long-distance modifications of gravity to 100 astronomical units. PHYSICAL REVIEW D, 92(10).

Graham, P. W., Kaplan, D. E., & Rajendran, S. (2015). Cosmological Relaxation of the Electroweak Scale. PHYSICAL REVIEW LETTERS, 115(22).

Chaudhuri, S., Graham, P. W., Irwin, K., Mardon, J., Rajendran, S., & Zhao, Y. (2015). Radio for hidden-photon dark matter detection. PHYSICAL REVIEW D, 92(7).

Graham, P. W., Rajendran, S., & Varela, J. (2015). Dark matter triggers of supernovae. PHYSICAL REVIEW D, 92(6).

Graham, P. W., Rajendran, S., Van Tilburg, K., & Wiser, T. D. (2015). Towards a Bullet-proof test for indirect signals of dark matter. PHYSICAL REVIEW D, 91(10).

Graham, P. W., Irastorza, I. G., Lamoreaux, S. K., Lindner, A., & van Bibber, K. A. (2015). Experimental Searches for the Axion and Axion-Like Particles. ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, VOL 65, 65, 485–514.

Graham, P. W., Mardon, J., Rajendran, S., & Zhao, Y. (2014). Parametrically enhanced hidden photon search. PHYSICAL REVIEW D, 90(7).

Graham, P. W., Rajendran, S., & Saraswat, P. (2014). Supersymmetric crevices: Missing signatures of R-parity violation at the LHC. PHYSICAL REVIEW D, 90(7).

Graham, P. W., Horn, B., Rajendran, S., & Torroba, G. (2014). Exploring eternal stability with the simple harmonic universe. JOURNAL OF HIGH ENERGY PHYSICS, (8).

Budker, D., Graham, P. W., Ledbetter, M., Rajendran, S., & Sushkov, A. O. (2014). Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr). PHYSICAL REVIEW X, 4(2).

Barry, K., Graham, P. W., & Rajendran, S. (2014). Displaced vertices from R-parity violation and baryogenesis. PHYSICAL REVIEW D, 89(5).

Graham, P. W., Horn, B., Kachru, S., Rajendran, S., & Torroba, G. (2014). A simple harmonic universe. JOURNAL OF HIGH ENERGY PHYSICS, (2).

Graham, P. W., & Rajendran, S. (2013). New observables for direct detection of axion dark matter. PHYSICAL REVIEW D, 88(3).

Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2013). New method for gravitational wave detection with atomic sensors. Physical Review Letters, 110(17), 171102-?

Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2013). New method for gravitational wave detection with atomic sensors. Physical Review Letters, 110(17), 171102-?

Graham, P. W., Kaplan, D. E., Rajendran, S., & Walters, M. T. (2012). Semiconductor probes of light dark matter. PHYSICS OF THE DARK UNIVERSE, 1(1-2), 32–49.

Graham, P. W., Howe, K., Rajendran, S., & Stolarski, D. (2012). New measurements with stopped particles at the LHC. PHYSICAL REVIEW D, 86(3).

Graham, P. W., Kaplan, D. E., Rajendran, S., & Saraswat, P. (2012). Displaced Supersymmetry. JOURNAL OF HIGH ENERGY PHYSICS, (7).

Ajello, M., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., … Zimmer, S. (2012). Limits on large extra dimensions based on observations of neutron stars with the Fermi-LAT. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (2).

Hewett, J. L. (2012). Fundamental Physics at the Intensity Frontier.

Graham, P. W., Kaplan, D. E., Rajendran, S., & Walters, M. T. (2012). Semiconductor Probes of Light Dark Matter. Physics of the Dark Universe, 1(32).

Graham, P. W., & Rajendran, S. (2011). Axion dark matter detection with cold molecules. PHYSICAL REVIEW D, 84(5).

Dimopoulos, S., Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2011). Reply to "Comment on 'Atomic gravitational wave interferometric sensor'". PHYSICAL REVIEW D, 84(2).

Hogan, J. M., Johnson, D. M. S., Dickerson, S., Kovachy, T., Sugarbaker, A., Chiow, S.-wey, … Keski-Kuha, R. (2011). An atomic gravitational wave interferometric sensor in low earth orbit (AGIS-LEO). GENERAL RELATIVITY AND GRAVITATION, 43(7), 1953–2009.

Porter, T. A., Johnson, R. P., & Graham, P. W. (2011). Dark Matter Searches with Astroparticle Data. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 49, 49, 155–194.

Feldstein, B., Graham, P. W., & Rajendran, S. (2010). Luminous dark matter. PHYSICAL REVIEW D, 82(7).

Graham, P. W., Harnik, R., & Rajendran, S. (2010). Observing the dimensionality of our parent vacuum. PHYSICAL REVIEW D, 82(6).

Graham, P. W., Harnik, R., Rajendran, S., & Saraswat, P. (2010). Exothermic dark matter. PHYSICAL REVIEW D, 82(6).

Graham, P. W., Ismail, A., Rajendran, S., & Saraswat, P. (2010). Little solution to the little hierarchy problem: A vectorlike generation. PHYSICAL REVIEW D, 81(5).

Graham, P. W., & Rajendran, S. (2010). Domino theory of flavor. PHYSICAL REVIEW D, 81(3).

Arvanitaki, A., Dimopoulos, S., Dubovsky, S., Graham, P. W., Harnik, R., & Rajendran, S. (2009). Decaying dark matter as a probe of unification and TeV spectroscopy. PHYSICAL REVIEW D, 80(5).

Dimopoulos, S., Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2009). Gravitational wave detection with atom interferometry. PHYSICS LETTERS B, 678(1), 37–40.

Arvanitaki, A., Dimopoulos, S., Dubovsky, S., Graham, P. W., Harnik, R., & Rajendran, S. (2009). Astrophysical probes of unification. PHYSICAL REVIEW D, 79(10).

Dimopoulos, S., Graham, P. W., Hogan, J. M., Kasevich, M. A., & Rajendran, S. (2008). Atomic gravitational wave interferometric sensor. PHYSICAL REVIEW D, 78(12).

Dimopoulos, S., Graham, P. W., Hogan, J. M., & Kasevich, M. A. (2008). General relativistic effects in atom interferometry. PHYSICAL REVIEW D, 78(4).

Dimopoulos, S., Graham, P. W., Hogan, J. M., & Kasevich, M. A. (2007). Testing general relativity with atom interferometry. PHYSICAL REVIEW LETTERS, 98(11).

Graham, P. W., Pierce, A., & Wacker, J. G. (2006). Four Taus at the Tevatron.

Arvanitaki, A., Davis, C., Graham, P. W., Pierce, A., & Wacker, J. G. (2005). Limits on split supersymmetry from gluino cosmology. PHYSICAL REVIEW D, 72(7).

Arvanitaki, A., & Graham, P. W. (2005). Indirect signals from dark matter in split supersymmetry. PHYSICAL REVIEW D, 72(5).

Arvanitaki, A., Davis, C., Graham, P. W., & Wacker, J. G. (2004). One loop predictions of the finely tuned supersymmetric standard model. PHYSICAL REVIEW D, 70(11).

Hong, J., Craig, W. W., Graham, P., Hailey, C. J., Spooner, N. J. C., & Tovey, D. R. (2002). The scintillation efficiency of carbon and hydrogen recoils in an organic liquid scintillator for dark matter searches. ASTROPARTICLE PHYSICS, 16(3), 333–338.