Leonard Parker

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

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

1971/72 he spent a year as a visiting scholar at Princeton University with John Archibald Wheeler and he was also in the 1970s, been a guest at the Institute for Advanced Study.

He is considered the founder of quantum field theory in curved spaces as they occur in the general theory of relativity. In his dissertation in 1967, he showed that are generated in the time-varying gravitational field of an expanding universe particle-antiparticle pairs. This had, for example, affect the dissipation of thermal radiation of black holes by Stephen Hawking in the 1970s. The particle creation in expanding universes also resulted in amplification of fluctuations, which manifest themselves as anisotropies in the CMB.

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

In 2011 he won the First Prize in Essay Competition of the Gravity Research Foundation ( for Stimulated creation of quanta falling on 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.

Writings

Quantized Fields and Particle Creation in Expanding Universes. I, Physical Review 183, 1969, pp. 1057-1068, Abstract
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 Universe anisotropy, 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 sample 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 063 534
With I. Agullo, J. Navarro- Salas, Gonzalo J. Olmo Revising the observable Consequences of slow- roll inflation, Phys. Rev. D 81, 2010 043 514
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 063 526
Particle creation and particle number in at expanding universe, Preprint, 2012
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
David Toms: Quantum Field Theory in Curved Spacetime: Quantized Fields and Gravity, Cambridge University Press 2009

University of Wisconsin–Milwaukee Mathematics Genealogy Project Integrated Authority File

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