Leonard Parker

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Leonard Emanuel Parker (born May 13, 1938 in Brooklyn , New York City ) is an American theoretical physicist .

Life

Parker studied at Rochester University with a bachelor's degree in 1960 and at Harvard University with a master's degree in 1962 and a doctorate with Sidney Coleman in 1967 ( The creation of particles in an expanding universe ). From 1966 to 1968 he was an instructor at the University of North Carolina at Chapel Hill . In 1968 he became Assistant Professor , 1970 Associate Professor and 1975 Professor at the University of Wisconsin – Milwaukee , where he was director of the Center for Gravitation and Cosmology .

In 1971/72 he was a visiting scholar at Princeton University with John Archibald Wheeler and he was also a guest at the Institute for Advanced Study several times in the 1970s .

He is considered the founder of quantum field theory in curved spaces as they appear in general relativity . In his dissertation in 1967 he showed that particle-antiparticle pairs are generated in the time-varying gravitational field of an expanding universe. This had an influence, for example, on the derivation of thermal radiation from black holes by Stephen Hawking in the 1970s. The generation of particles in expanding universes also led to intensification of fluctuations, which become noticeable as anisotropies in the CMB .

He also dealt with various topics in relativistic astrophysics (such as rapidly rotating neutron stars) and the influence of curved spaces on the spectrum of simple atoms.

In 2011 he received first prize in the essay competition of the Gravity Research Foundation (for Stimulated creation of quanta during inflation and the observable universe with I. Agullo) and previously won a second prize in 1984. He is a Fellow of the American Physical Society (1984) and the American Association for the Advancement of Science .

Fonts

  • Quantized Fields and Particle Creation in Expanding Universes. I , Physical Review 183, 1969, pp. 1057-1068, bibcode : 1969PhRv..183.1057P
  • with SA Fulling Adiabatic Regularization of the Energy-Momentum Tensor of a Quantized Field in Homogeneous Spaces , Physical Review D 9, 1974, 341
  • with B.-L. Hu, SA Fulling Conformal Energy-Momentum Tensor in Curved Space-time: Adiabatic Regularization and Renormalization , Physical Review D, 10, 1974, 3905
  • with Hu, Fulling; Quantized Scalar Fields in a Closed Anisotropy Universe , Phys. Rev. D, 8, 1973, 2377
  • Probability Distribution of Particles Created by a Black Hole , Physical Review D 12, 1975, p. 1519
  • Thermal Radiation Produced by the Expansion of the Universe , Nature 261, 1976, 20
  • with TS Bunch The Feynman Propagator in Curved Spacetime: A Momentum Space Representation , Physical Review D 20, 1979, 2499
  • with J. Bekenstein Path Integral Evaluation of Feynman Propagator in Curved Spacetime , Physical Review D 23, 1981, p. 2850
  • The One-Electron Atom as a Probe of Spacetime Curvature , Physical Review D 22, 1980, 1922
  • with JL Friedman, JR Ipser Rapidly Rotating Neutron Star Models , Astrophysical Journal 304, 1986, 115-139
  • with MM Glenz Study of the Spectrum of Inflaton Perturbations , Phys. Rev. D 80, 2009, 063534
  • with I. Agullo, J. Navarro-Salas, Gonzalo J. Olmo Revising the observable consequences of slow-roll inflation , Phys. Rev. D 81, 2010, 043514
  • with I. Agullo, J. Navarro-Salas, Gonzalo J. Olmo Hawking radiation by Kerr black holes and conformal symmetry , Phys. Rev. Lett. 105, 2010, 211305
  • with I. Agullo Non-Gaussianities and the stimulated creation of quanta in the inflationary universe , Phys. Rev. D 83, 2011, 063526
  • Particle creation and particle number in an expanding universe , 2012, arxiv : 1205.5616
  • Aspects of Quantum Field Theory in Curved Space-time: Effective Action and Energy-Momentum Tensor , in Stanley Deser , M. Levy Recent Developments in Gravitation , Plenum 1979, 219-273
  • with David Toms: Quantum Field Theory in Curved Spacetime: Quantized Fields and Gravity , Cambridge University Press 2009

Web links

Individual evidence

  1. ↑ Originally Pearlman
  2. ↑ Life data according to American Men and Women of Science , Thomson Gale 2004
  3. ^ Leonard Parker in the Mathematics Genealogy Project (English) Template: MathGenealogyProject / Maintenance / id used.
  4. ↑ Published in Physical Review, 1969
  5. ↑ According to Parker, he recognized as early as 1969 that black holes produce particles, but, to his later regret, did not publish this in his original work. Mark Johnson, article on Parker in Journal Sentinel 2007, see web links
personal data
SURNAME Parker, Leonard
ALTERNATIVE NAMES Parker, Leonard Emanuel (full name); Pearlman, Leonard (maiden name)
BRIEF DESCRIPTION American theoretical physicist
DATE OF BIRTH May 13, 1938
PLACE OF BIRTH Brooklyn , New York