Helen Quinn

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Helen Quinn (2003)

Helen Rhoda Quinn (born May 19, 1943 in Melbourne ) is an Australian theoretical physicist who mainly works in the field of elementary particle physics .

Life

Quinn attended school in Victoria , Australia and studied at the University of Melbourne (with a scholarship in meteorology) before going to Stanford University in the United States , where she got her bachelor 's degree in 1963 and her master's degree in 1964 and with work in 1967 radiative corrections to beta decay and some sum rules for neutrino interactions doctorate . From 1967 to 1968 she was at SLAC ( Stanford Linear Accelerator ) and then until 1970 at DESY in Hamburg (where her husband also worked as a physicist) before moving to Harvard Universitywent where she was Associate Professor in 1976/77. In 1977 she went back to the SLAC, where she has been a permanent scientist since 1979, coordinating the training from 1988 to 1993 (she is also active in the SLAC's collaboration with school teachers in California). She has been Professor of Physics at SLAC since 2003.

Quinn was known for her work on the great unified theory (GUT) and CP symmetry . In 1974, together with Howard Georgi and Steven Weinberg , she was the first to postulate the convergence of the coupling constants in a GUT theory (at up to  G eV ). With Roberto Peccei , she postulated the Peccei-Quinn symmetry to explain CP conservation in the strong interaction (as opposed to the electroweak interaction). From this theory follows the prediction of the (previously unobserved) axion . She used the Cabibbo-Kobayashi-Maskawa matrix to investigate CP violation in B meson decays. With Enrico Poggio and Steven Weinberg she introduced the quark-hadron duality. In 1972, together with Thomas Appelquist, she investigated the renormalization properties (cancellation of divergences) of simplified models (Appelquist-Quinn model) of the electroweak interaction.

From 1974 to 1978 she was a Sloan Research Fellow . In 1984 she became a Fellow of the American Physical Society . Since 1998 she has been a member of the American Academy of Arts and Sciences , since 2003 of the National Academy of Sciences of the USA and since 2009 of the American Philosophical Society . In 2000 she received the Dirac Medal of the International Center for Theoretical Physics (ICTP) in Trieste with Howard Georgi and Jogesh Pati . She is an honorary doctorate from the University of Notre Dame (2002). Since 2004 she has been president of the American Physical Society (APS). In 2005 she received the Order of Australia as an officer. In 2013 she was awarded the Sakurai Prize , in 2016 she received the Compton Medal of the American Institute of Physics (AIP) and in 2018 she was awarded the Benjamin Franklin Medal of the Franklin Institute .

She is married and has two kids.

Fonts

  • with Yossi Nir: The mystery of missing antimatter , Princeton University Press 2008
  • Quinn: The CP puzzle of the strong interactions . In: Dirac Lecture . 2001, arxiv : hep-ph / 0110050 (English)
  • Quinn: B-Physics and CP Violation . In: Trieste Lectures . 2001, arxiv : hep-ph / 0111177 (English)

Web links

Individual evidence

  1. ↑ Helen Quinn in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  2. ^ Georgi, Quinn, Weinberg: Hierarchy of interactions in Unified Gauge Theories . In: Physical Review Letters . Volume 33, 1974, p. 451.
  3. ↑ Quinn Peccei: CP conservation in the presence of pseudoparticles . In: Physical Review Letters . Volume 38, 1977, p. 1440.
    Constraints Imposed by CP Conservation in the Presence of a Pseudoparticle . In: Physical Review D , Volume 16, 1977, p. 1791.
  4. ↑ with Yosef Nir: CP Violation in B Physics . In: Annual Review of Nuclear and Particle Science . Volume 42, 1992, p. 211.
  5. ^ Poggio, Quinn, Weinberg: Smearing Method in the Quark Model . In: Physical Review D , Volume 13, 1976, p. 1958.
  6. ↑ T. Appelquist, HR Quinn: Divergence cancellations in a simplified weak interaction model . In: Physics Letters B . Volume 39, 1972, p. 229.
  7. ^ Australian Honors - Officer of the Order of Australia
  8. ↑ 2016 Compton Medal. AIP, 2016, accessed on February 22, 2018 (English): “for her leadership in promoting K-12 education and outreach, including the development of standards and approaches to science education that have had an enormous influence at the local, state, national and international levels, and for her broad and deep contributions to the advancement of theoretical particle physics "
personal data
SURNAME Quinn, Helen
ALTERNATIVE NAMES Quinn, Helen R .; Quinn, Helen Rhoda (full name)
BRIEF DESCRIPTION Australian physicist
DATE OF BIRTH May 19, 1943
PLACE OF BIRTH Melbourne