Richard Blankenbecler

Richard Blankenbecler
Born1933
Kingsport,_Tennessee
CitizenshipAmerican
Alma materMiami_University (BA) Stanford_University (Ph.D.)
Scientific career
Doctoral advisorSidney_Drell
Other academic advisorsMarvin_Goldberger Sam_Treiman
Doctoral studentsHenry Abarbanel, Robert Sugar, Daniel Boyanovsky, Darryl Coon, Robert Pearson, Thomas_Neff, Ivan Schmidt

Richard Blankenbecler (born 1933, in Kingsport, Tennessee) is an American theoretical particle physicist. He is a professor emeritus with the SLAC Theory Group[1] at the Stanford Linear Accelerator Center (SLAC) at Stanford University.

In 1954, Blankenbecler received his B.A. in physics from Miami University and in 1958 he received his doctorate from Stanford University. After his Ph.D., he became a postdoc at Princeton University and a Sloan Research Fellowship in 1962. In 1963 he became assistant professor and in 1966 a full professor at Princeton where he collaborated with Marvin Goldberger and Sam Treiman where they worked on fundamental papers on quantum field theory. A Sloan Research Fellowship[2] supported his work on dispersion relations[3][4] and scattering amplitudes.[5][6]

After Princeton in 1966, Blankenbecler moved to the University of California at Santa Barbara where he taught and did research on quantum field theory. He developed a formalism for carrying out Monte Carlo calculations in quantum field theories with both boson and fermion degrees of freedom.[7] The Blankenbecler-Sugar equation provided a new formalism for scattering and production processes,[8] is still in use as of 2025.[9]

In 1969, Blankenbecler returned to the Stanford Linear Accelerator Center faculty in the SLAC Theory Group. With Sidney Drell, a simple high-energy expansion for bremsstrahlung was developed and applied to the problem of radiation from an extended target.[10] In 1985 Boyanovsky and Blankenbecler reported on fractional charge[11] and in 1976 Sivers, Brodsky and Blankenbecler published a comprehensive survey of Large Transverse Momentum Processes[12] confronting theory (parton and non-parton models) with experiment.

Also in 1969, Blankenbecler spent one year at Paris-Saclay University to continue work on Coupled Boson-Fermion Systems.[13]

At SLAC Blankenbecler was a member of the Reason Project[14] that led indirectly to the first web site established in North America hosting the SPIRES database, designed as a physics database management system. In addition to published work in optical design,[15] he also developed a Hamiltonian method for 3D image reconstruction.[16] He also developed a low-dose pre-treatment protocol to minimize radiation damage for cancer patients[17] and during radiation workers.[18]

In 2000, Blankenbecler retired as emeritus professor at SLAC.

Memberships and awards

References

  1. ^ "SLAC National Accelerator Laboratory > Theoretical Physics > People". Theoretical Physics Faculty and Staff Scientists. Retrieved April 16, 2025.
  2. ^ a b "Fellows Database | Alfred P. Sloan Foundation". sloan.org. Retrieved 2025-04-18.
  3. ^ Blankenbecler, Richard; Goldberger, Marvin L.; Halpern, Francis R. (1959-09-01). "Elastic neutron-deuteron scattering". Nuclear Physics. 12 (6): 629–646. Bibcode:1959NucPh..12..629B. doi:10.1016/0029-5582(59)90106-3.
  4. ^ Blankenbecler, R; Goldberger, M.L; Khuri, N.N; Treiman, S.B (1960-05-01). "Mandelstam representation for potential scattering". Annals of Physics. 10 (1): 62–93. Bibcode:1960AnPhy..10...62B. doi:10.1016/0003-4916(60)90016-6.
  5. ^ Blankenbecler, R. (1961-05-01). "Construction of Unitary Scattering Amplitudes". Physical Review. 122 (3): 983–992. Bibcode:1961PhRv..122..983B. doi:10.1103/PhysRev.122.983. ISSN 0031-899X.
  6. ^ Blankenbecler, R.; Goldberger, M. L. (1962-04-15). "Behavior of Scattering Amplitudes at High Energies, Bound States, and Resonances". Physical Review. 126 (2): 766–786. Bibcode:1962PhRv..126..766B. doi:10.1103/PhysRev.126.766. ISSN 0031-899X.
  7. ^ Blankenbecler, R.; Scalapino, D. J.; Sugar, R. L. (1981-10-15). "Monte Carlo calculations of coupled boson-fermion systems. I". Physical Review D. 24 (8): 2278–2286. Bibcode:1981PhRvD..24.2278B. doi:10.1103/PhysRevD.24.2278. ISSN 0556-2821.
  8. ^ Blankenbecler, R.; Sugar, R. (1966-02-25). "Linear Integral Equations for Relativistic Multichannel Scattering". Physical Review. 142 (4): 1051–1059. Bibcode:1966PhRv..142.1051B. doi:10.1103/PhysRev.142.1051. ISSN 0031-899X.
  9. ^ Clymton, Samson; Kim, Hyun-Chul; Mart, Terry (2025), Molecular nature of hidden-charm pentaquark states $P_{c\bar{c}s}$ with strangeness $S=-1$, arXiv:2504.07693
  10. ^ Blankenbecler, Richard; Drell, Sidney D. (1 July 1987). "Quantum treatment of beamstrahlung". Physical Review D. 36 (3): 277–288. Bibcode:1987PhRvD..36..277B. doi:10.1103/PhysRevD.36.277. OSTI 1448196. PMID 9958044.
  11. ^ Bardeen, William A.; White, Alan R.; Argonne National Laboratory; Fermi National Accelerator Laboratory; University of Chicago, eds. (1985). Symposium on Anomalies, Geometry, Topology. Singapore: World Scientific. ISBN 978-9971-978-69-3.
  12. ^ Sivers, Dennis; Brodsky, Stanley J.; Blankenbecler, Richard (1976-01-01). "Large transverse momentum processes". Physics Reports. 23 (1): 1–121. Bibcode:1976PhR....23....1S. doi:10.1016/0370-1573(76)90015-6.
  13. ^ Blankenbecler, R.; Scalapino, D. J.; Sugar, R. L. (1981-10-15). "Monte Carlo calculations of coupled boson-fermion systems. I". Physical Review D. 24 (8): 2278–2286. Bibcode:1981PhRvD..24.2278B. doi:10.1103/PhysRevD.24.2278. ISSN 0556-2821.
  14. ^ Atwood, William; Blankenbecler, Richard; Kunz, Paul; Mours, Benoit; Weir, Andrew; Word, Gary. "The Reason Project". cern.ch. Retrieved April 16, 2025.
  15. ^ Manhart, Paul K. (1997-06-01). "Fundamentals of macro axial gradient index optical design and engineering". Optical Engineering. 36 (6): 1607. doi:10.1117/1.601179. ISSN 0091-3286.
  16. ^ Blankenbecler, Richard (2004-02-18). "Three-dimensional image reconstruction. II. Hamiltonian method for phase recovery". Physical Review B. 69 (6): 064108. Bibcode:2004PhRvB..69f4108B. doi:10.1103/PhysRevB.69.064108. ISSN 1098-0121.
  17. ^ Blankenbecler, Richard (2010-10-01). "Low-dose Pretreatment for Radiation Therapy". Dose-Response. 8 (4): 534–542. doi:10.2203/dose-response.10-033.Blankenbecler. ISSN 1559-3258. PMC 2990069. PMID 21191490.
  18. ^ Blankenbecler, Richard (2011-10-01). "Radiation Worker Protection by Exposure Scheduling". Dose-Response. 9 (4): 465–470. doi:10.2203/dose-response.11-029.Blankenbecler. ISSN 1559-3258. PMC 3315167. PMID 22461756.
  19. ^ "APS General Fellowship". www.aps.org. Retrieved 2025-04-18.
  20. ^ "Past KITP Advisory Board Members | KITP". www.kitp.ucsb.edu. Retrieved 2025-05-05.
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