Sheldon Glashow

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Sheldon Glashow
Electroweak theory
Georgi–Glashow model
GIM mechanism
Glashow resonance
De Rujula-Georgi-Glashow quark model
Chiral color
Very special relativity
Trinification
Weak hypercharge
Weak mixing angle
Criticism of Superstring theory
Spouse
Joan Shirley Alexander
​
​
(m. 1972)​
Children4
Awards
Theoretical Physics
InstitutionsBoston University
Harvard University
Texas A&M University
California Institute of Technology
Stanford University
University of California, Berkeley
ThesisThe vector meson in elementary particle decays (1958)
Doctoral advisorJulian Schwinger

Sheldon Lee Glashow (US: /ˈɡlæʃoʊ/,[1][2] UK: /ˈɡlæʃaʊ/;[3] born December 5, 1932) is a Nobel Prize-winning American theoretical physicist. He is the Metcalf Professor of Mathematics and Physics at Boston University and Eugene Higgins Professor of Physics, emeritus, at Harvard University, and is a member of the board of sponsors for the Bulletin of the Atomic Scientists.

Birth and education

Sheldon Glashow was born on December 5, 1932, in

Texas A&M, the University of Houston, and Boston University.[5]

Research

In 1961,

electroweak interactions. For this discovery, Glashow along with Steven Weinberg and Abdus Salam, was awarded the 1979 Nobel Prize in Physics
.

In collaboration with

leptons had been discovered but only 3 quarks proposed. The development of their work in 1970, the GIM mechanism showed that the two quark pairs: (d.s), (u,c), would largely cancel out flavor changing neutral currents, which had been observed experimentally at far lower levels than theoretically predicted on the basis of 3 quarks only. The prediction of the charm quark also removed a technical disaster for any quantum field theory with unequal numbers of quarks and leptons — an anomaly
— where classical field theory symmetries fail to carry over into the quantum theory.

In 1973,

standard model into an SU(5) Lie group group, and the quarks and leptons into two simple representations. Their theory qualitatively predicted the general pattern of coupling constant running, with plausible assumptions, it gave rough mass ratio values between third generation leptons and quarks, and it was the first indication that the law of Baryon number is inexact, that the proton
is unstable. This work was the foundation for all future unifying work.

Glashow shared the 1977 J. Robert Oppenheimer Memorial Prize with Feza Gürsey.[11][12]

Criticism of superstring theory

Glashow is a skeptic of

Harvard physics department, though the campaign failed.[13] About ten minutes into "String's the Thing", the second episode of The Elegant Universe TV series, he describes superstring theory as a discipline distinct from physics, saying "...you may call it a tumor, if you will...".[14]

Professor Glashow's KHC PY 101 Energy class, at Boston University's Kilachand Honors College (Spring 2011)

Personal life

Glashow is married to Joan Shirley Alexander. They have four children.[5] Lynn Margulis was Joan's sister, making Carl Sagan his former brother-in-law. Daniel Kleitman, who was another doctoral student of Julian Schwinger, is also his brother-in-law, through Joan's other sister, Sharon.

In 2003, he was one of 22 Nobel Laureates who signed the

atheist" and a Democrat.[16]

Glashow is one of the 20 American recipients of the Nobel Prize in Physics to sign a letter addressed to President George W. Bush in May 2008, urging him to "reverse the damage done to basic science research in the Fiscal Year 2008 Omnibus Appropriations Bill" by requesting additional emergency funding for the Department of Energy’s Office of Science, the National Science Foundation, and the National Institute of Standards and Technology.[17]

Works

Awards and honors

See also

References

  1. ^ "Glashow". The American Heritage Dictionary of the English Language (5th ed.). HarperCollins. Retrieved 30 July 2019.
  2. ^ "Glashow". Collins English Dictionary. HarperCollins. Archived from the original on 30 July 2019. Retrieved 30 July 2019.
  3. ^ "Glashow, Sheldon Lee". Lexico UK English Dictionary. Oxford University Press.[dead link]
  4. ^ Sheldon Glashow – Britannica Encyclopedia. Britannica.com. Retrieved on 2012-07-27.
  5. ^ a b c Glashow's autobiography Archived 2007-10-12 at the Wayback Machine. Nobelprize.org. Retrieved on 2012-07-27.
  6. ^ "The Nobel Prize in Physics 1979". NobelPrize.org. Retrieved 2022-08-11.
  7. ^ "Glashow, Sheldon L." history.aip.org. Retrieved 2022-08-11.
  8. ^ Sheldon Glashow Archived 2014-08-03 at the Wayback Machine. Jewishvirtuallibrary.org. Retrieved on 2012-07-27.
  9. doi:10.1016/0029-5582(61)90469-2. Archived
    from the original on 2021-02-27. Retrieved 2020-12-02.
  10. ^ H. Georgi, S.L. Glashow, "Unity of All Elementary Particle Forces", Phys. Rev. Lett. 32 (1974) 438 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.32.438
  11. ISBN 9780871963864
    .
  12. doi:10.1063/1.3037556
    .
  13. ^ Jim Holt (2006-10-02), "Unstrung" Archived 2011-06-06 at the Wayback Machine, The New Yorker. Retrieved on 2012-07-27.
  14. ^ "[T]here ain't no experiment that could be done nor is there any observation that could be made that would say, `You guys are wrong.' The theory is safe, permanently safe." He also said, "Is this a theory of Physics or Philosophy? I ask you" NOVA interview Archived 2011-08-30 at the Wayback Machine
  15. ^ "Notable Signers". Humanism and Its Aspirations. American Humanist Association. Archived from the original on October 5, 2012. Retrieved October 2, 2012.
  16. ^ Sheldon Glashow, Nobel Prize in Physics for the Electroweak Theory . La Vanguardia, 20 June 2017, raed.academy/wp-content/uploads/2017/06/Sheldon-Lee-Glashow-contraLVeng.pdf.
  17. ^ "A Letter from America's Physics Nobel Laureates" (PDF). Archived (PDF) from the original on 2021-10-30. Retrieved 2020-05-30.
  18. American Academy of Achievement. Archived
    from the original on 2016-12-15. Retrieved 2020-07-19.
  19. ^ "APS Member History". search.amphilsoc.org. Archived from the original on 2021-07-09. Retrieved 2021-07-08.

External links

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