The Division of Physics, Mathematics, and Astronomy (PMA) at the California Institute of Technology (Caltech) has a long and distinguished history, playing a leading role in many of the most important scientific developments of the 20th and 21st centuries.
From 1949, PMA has been one of the six academic divisions at Caltech. As a foundational academic and research unit, our faculty, staff scientists, and students create and employ the most ambitious and technologically advanced tools in their efforts to explore and understand every aspect of our universe. Their research covers all scales, from the vastness of the cosmos down to atoms, electrons, strings, quantum foam, and beyond.
PMA has trained generations of Nobel laureates, encouraging the kind of high-risk, high-reward research work that consistently sets it apart. This spirit is sustained through investment in exceptional experimental facilities and cultivation of a collaborative, interdisciplinary environment where science's brightest minds can be set to work on its most intractable and fascinating problems. PMA's compact and focused nature promotes close collaboration and intellectual rigor that continues to define its global reputation.
PMA at a Glance
- Professorial Faculty: 79
- Emeritus Faculty: 21
- Research Faculty: 14
- Undergraduate Students: ~ 150
- Graduate Students: ~ 250
- Postdocs: ~150
- Technical and Administrative Staff: ~ 75
Academic Programs
Undergraduate Degrees
- Bachelor of Science (B.S.) in Physics
- Bachelor of Science (B.S.) in Mathematics
- Bachelor of Science (B.S.) in Astrophysics
Graduate Degrees
PMA primarily focuses on graduate programs leading to the Doctor of Philosophy (Ph.D.) degree. A Master of Science (M.S.) degree may be awarded to Ph.D. students upon completion of certain requirements, or in exceptional cases, to undergraduate students pursuing a concurrent B.S./M.S. degree.
- PhD in Physics
- PhD in Mathematics
- PhD in Astrophysics
BS and PhD degrees are offered in Astrophysics, Math, and Physics. Astrophysics is the official option name for Astronomy, which is used to denote the department.
Interdisciplinary Studies Programs
The Interdisciplinary Studies Program (ISP) is an undergraduate option that allows the student to create their own scholastic requirements, under faculty supervision, and to pursue positive educational goals that cannot be achieved in any of the other available options. More information is available on the Caltech Catalog.
PMA Awards & Honors
Fundamental Physics
- Alexei Kitaev, 2012
- John H. Schwarz, 2014
- Arthur B. McDonald (PhD '69), 2016
- Joseph Polchinski (BS '75), 2017
- Eric Adelberger (BS '60, PhD '67) 2021
- Peter Shor (BS '81), 2023
Mathematics
- Ian Agol (BS '92), 2016
Special Breakthrough Prize in Fundamental Physics
- *Kip Thorne (BS '62), 2016
- †Ronald Drever, 2016
Mathematics & Astronomy
- Allan R. Sandage (PhD '53), 1991
- James E. Gunn (PhD '66), 2005
- Martin J. Rees (Postdoc '68), 2005
- Andrea M. Ghez (MS '89, PhD '93), 2012
- Eugene N. Parker (PhD '51), 2020
Mathematics
Stanislav Smirnov (PhD '96), 2010
Astrophysics
- Maarten Schmidt, 2008
- James Roger Prior Angel (MS '66), 2010
- Jerry E. Nelson (BS '65), 2010
- Michael E. Brown, 2012
- David C. Jewitt (MS '80, PhD '83), 2012
- Kip Thorne (BS '62), 2016
- Ronald W. P. Drever, 2016
- Roger Ulrich (Postdoc '69), 2022
- Douglas D. Osheroff (BS '67), June 1981, Physics
- Stephen Wolfram (PhD '79), June 1981, Computer Science and Electrical Engineering
- Bradley Efron (BS '60), February 1983, Mathematics, Statistics, and Probability
- John J. Hopfield, August 1983, Physics
- James E. Gunn (PhD '66), August 1983, Astrophysics and Astronomy
- Michael C. Malin (PhD '76), 1987, Earth Sciences, Astrophysics and Astronomy
- John H. Schwarz, 1987, Physics
- James A. Westphal, 1991, Astrophysics and Astronomy
- Jack Wisdom (PhD '81), 1994, Physics
- J. Roger Angel (MS '66), 1996, Astrophysics and Astronomy
- Peter W. Shor (BS '81), 1999, Mathematics, Statistics, and Probability, Computer Science and Electrical Engineering
- Hideo Mabuchi (PhD '98), 2000, Physics
- Charles C. Steidel (PhD '90), 2002, Astrophysics and Astronomy
- Alexei Kitaev, 2008, Physics, Computer Science and Electrical Engineering, Mathematics, Statistics, and Probability
- Nergis Mavalvala (Postdoc '97–'02), 2010, Astrophysics and Astronomy, Physics
- Sarah T. Stewart (PhD '02), 2018, Astrophysics and Astronomy
- Kareem El-Badry, 2025, Astrophysics and Astronomy
Mathematics and Computer Science
- Donald E. Knuth (PhD '63), 1979
- Samuel Karlin (Postdoc '48), 1989
- John McCarthy (BS '48), 1990
- Bradley Efron (BS '60), 2005
Physical Sciences
- Wolfgang K. H. Panofsky (PhD '42), 1969
- Allan Sandage (PhD '52), 1970
- Saul Winstein (PhD '38), 1970
- Arie J. Haagen-Smit, 1973
- William A. Fowler (PhD '36), 1974
- Linus Pauling (PhD '25), 1974
- Kenneth S. Pitzer (BS '35), 1974
- E. Bright Wilson Jr. (PhD '34), 1975
- Richard P. Feynman, 1979
- Charles H. Townes (PhD '39), 1982
- Walter H. Munk (BS '39), 1983
- H. Richard Crane (BS '30, PhD '34), 1986
- Arnold O. Beckman (PhD '28), 1989
- Eugene Parker (PhD '51), 1989
- Robert P. Sharp (BS '34), 1989
- Edwin M. McMillan (BS '28, MS '29), 1990
- Edward C. Stone, 1991
- Eugene M. Shoemaker (BS '48), 1992
- Peter M. Goldreich, 1995
- Don L. Anderson (PhD '62), 1998
- Charles D. Keeling (Postdoc '53-'56), 2001
- Robert N. Clayton (PhD '55), 2004
- Berni Alder (PhD '52), 2008
- James Gunn (PhD '65), 2008
- Sylvester J. Gates Jr. (Postdoc '80-'82), 2012
- Sean C. Solomon (BS '66), 2012
- Barry Barish, 2023
Physics Awards: Complete List
Division Chairs
1949 – 1962: Robert F. Bacher
1962 – 1970: Carl D. Anderson
1970 - 1975: Robert B. Leighton
1975 - 1978: Maarten Schmidt
1978 - 1983: Rochus (Robbie) Vogt
1983 - 1988: Edward C. Stone
1988 - 1993: Gerry Neugebauer
1993 - 1998: Charles W. Peck
1998 - 2008: Thomas A. Tombrello
2008 - 2009: Andrew E. Lange
2010 - 2015: Baruch Thomas Soifer
2015 - 2025: Fiona A. Harrison
2025 - present: Hirosi Ooguri