Helen Quinn
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Helen Quinn | |
---|---|
Helen Quinn at Harvard University | |
Born | Melbourne, Australia | May 19, 1943
Nationality | American |
Alma mater | Stanford University, Ph.D., 1967, postdoctoral work at DESY |
Occupation | Particle physicist |
Employer(s) | Harvard University, Stanford Linear Accelerator Center |
Board member of | Board on Science Education of the National Research Council (of NAS) |
Helen Rhoda Arnold Quinn (born 19 May 1943 in Melbourne) is an Australian-born particle physicist whose contributions to the search for a unified theory for the three types of particle interactions (strong, electromagnetic, and weak) were recognized by several honors including the Dirac Medal of the International Center for Theoretical Physics.
Life
Quinn went to school in Victoria, Australia and entered college at the University of Melbourne before moving to the USA and transferring to Stanford University. She received her Ph.D. from Stanford in 1967, at a time when less than 2% of physicists were women. She did her postdoctoral work at the DESY (the German Synchrotron Laboratory) in Hamburg, Germany. She next spent seven years at Harvard University before returning to Stanford where she is now a professor of physics at the Stanford Linear Accelerator Center.
Contributions to Physics
Working with Howard Georgi and Steven Weinberg, Quinn showed[1] how the three types of particle interactions (strong, electromagnetic, and weak), which look very different as we see their impact in the world around us, become very similar in extremely high-energy processes and so might be three aspects of a single unified force. She also suggested a possible near-symmetry of the universe (now known as Peccei–Quinn symmetry)[2] to explain how strong interactions can maintain CP-symmetry (the symmetry between matter and antimatter) when weak interactions do not. One consequence of this theory is a particle known as the axion which has yet to be observed but is one candidate for the dark matter that pervades the universe.
She showed how the physics of quarks can be used to predict certain aspects of the physics of hadrons (which are particles made from quarks) regardless of the details of the hadron’s structure (with Enrico Poggio and Steven Weinberg).[3] This useful property is now known as quark-hadron duality.
She has given public talks in various countries on "The Missing Antimatter", in which she suggests that this area of research is promising.
Quinn has had a long term engagement in education issues. In California, she works with elementary and high school teachers to make physics fun and exciting for students.[4] She chairs the Board on Science Education of the National Research Council (of NAS) and has served on a number of its studies. She chaired the NRC study committee that developed “A Framework for K-12 Science Education” (NRC, 2012) to guide the development of multi-state standards for science education. These "Next Generation Science Standards" were released in final form in April, 2013.
Career
Her physics career was as follows:[5]
- 1967-70 Postdoctoral Fellow, Deutsches Elektronen Synchrotron Hamburg, Germany
- 1971-72 Postdoctoral Fellow, Harvard University
- 1972-76 Assistant Professor, Harvard University
- 1976-77 Associate Professor, Harvard University
- 1977-78 Visiting Associate Professor, Stanford University
- 1978-79 Senior Postdoctoral Fellow, Stanford Linear Accelerator Center, Stanford University
- 1979 - Staff Scientist, Stanford Linear Accelerator Center, Stanford University
- 1988 - Education and Public Outreach Manager, Stanford Linear Accelerator Center, Stanford University
Honors
- 2013 J. J. Sakurai Prize for Theoretical Particle Physics American Physical Society
- Fellow and Past President, American Physical Society
- Member of the United States National Academy of Sciences
- Fellow of the American Academy of Arts and Sciences
- 2000 Dirac Medal of the International Center for Theoretical Physics, Trieste, Italy (with Howard Georgi and Jogesh Pati) for pioneering contributions to the quest for a unified theory of quarks and leptons and of the strong, weak, and electromagnetic interactions
- 2005 appointed an Honorary Officer of the Order of Australia, "for service to scientific research in the field of theoretical physics and to education" (the award was honorary because Quinn was no longer an Australian citizen)[6]
- 2008 Oscar Klein medal from the Royal Swedish Academy of Sciences
Notes
- "Helen Quinn: Interview about women in physics". National Academy of Sciences. 2013.
- Peccei, R.D.; Quinn, H.R. (1977). "CP conservation in the presence of pseudoparticles". Physical Review Letters. 38 (25): 1440–3. Bibcode:1977PhRvL..38.1440P. doi:10.1103/PhysRevLett.38.1440.
- Appelquist, T.; Quinn, H.R. (April 1972). "Divergence cancellations in a simplified Weak Interaction Model". Physics Letters B. 39 (2): 229–232. Bibcode:1972PhLB...39..229A. doi:10.1016/0370-2693(72)90783-6.
- Georgi, H.; Quinn, H.R.; Weinberg, S. (1974). "Hierarchy of interactions in Unified Gauge Theories". Physical Review Letters. 33 (7): 451–4. Bibcode:1974PhRvL..33..451G. doi:10.1103/PhysRevLett.33.451.
- Poggio, E.C.; Quinn, H.R.; Weinberg, S. (1976). "Smearing method in the quark model". Physical Review D. 13 (7): 1958–1968. Bibcode:1976PhRvD..13.1958P. doi:10.1103/PhysRevD.13.1958.
- "Entry on Helen R. Quinn". CWP Project. UCLA.
References
- ^ Georgi, H.; Quinn, H.R.; Weinberg, S. (1974). "Hierarchy of interactions in Unified Gauge Theories". Physical Review Letters. 33 (7): 451–4. Bibcode:1974PhRvL..33..451G. doi:10.1103/PhysRevLett.33.451.
- ^ Peccei, R.D.; Quinn, H.R. (1977). "CP conservation in the presence of pseudoparticles". Physical Review Letters. 38 (25): 1440–3. Bibcode:1977PhRvL..38.1440P. doi:10.1103/PhysRevLett.38.1440.
- ^ Poggio, E.C.; Quinn, H.R.; Weinberg, S. (1976). "Smearing method in the quark model". Physical Review D. 13 (7): 1958–1968. Bibcode:1976PhRvD..13.1958P. doi:10.1103/PhysRevD.13.1958.
- ^ "Contemporary Physics Education Project". Retrieved 12 June 2014.
- ^ Hellen R. Quinn. CWP, UCLA, and UC Regents. 1995 - 1998.
- ^ It's an Honour
- Use dmy dates from June 2011
- American physicists
- Australian physicists
- Particle physicists
- 1943 births
- Living people
- Women physicists
- American women scientists
- Stanford University alumni
- Harvard University faculty
- Stanford University Department of Physics faculty
- Honorary Officers of the Order of Australia
- Members of the United States National Academy of Sciences
- J. J. Sakurai Prize for Theoretical Particle Physics recipients
- 20th-century physicists
- 21st-century physicists
- 20th-century American scientists
- 21st-century American scientists
- 21st-century women scientists
- 20th-century women scientists