Electrodynamics and classical theory of particles and fields, quantum field theory, elementary particles and group theory, Barut–Girardello coherent states
He received his undergraduate diploma and his Ph.D. degree both from the Swiss Federal Institute of Technology in Zurich in 1949 and 1952, respectively. He pursued his postdoctoral studies at the University of Chicago during 1953-54.
Academic life[]
Barut was an assistant professor at Reed College during 1954-55 and then joined the faculty at Syracuse University in 1956. He became a professor of physics at the University of Colorado at Boulder in 1962 and served for 32 years.[3]
Research areas[]
His research interests centered on group theoretic methods in physics.[4] His books include Theory of the Scattering Matrix, Electrodynamics and Classical Theory of Fields and Particles and Representations of Noncompact Groups and Applications.[5]Asım Orhan Barut was elected a fellow of the American Physical Society in 1966.[1]
1950 the Cathode Field in Diodes under Partial Space-Charge Conditions with Initial Velocities
1951 Erratum the Cathode Field in Diodes under Partial Space-Charge Conditions with Initial Velocities
1954 the Mechanism of Secondary Electron Emission
1957 Distribution Functions for Noncommuting Operators
1958 Covariant Quantum Statistics of Fields
1960 Spin-Orbit Correlations in µ-E and E--E- Scattering
1961 Boson Currents in the Theory of Weak Interactions
1961 Kinematical and Dynamical Resonances
1962 Analyticity in Angular Momentum of the Relativistic Many-Channel S Matrix from Dispersion Relations and Unitarity
1962 Complex Angular Momentum in Relativistic S-Matrix Theory
1962 Formulation of the Scattering Functions in Terms of the Unitary Representations of the Inhomogeneous Lorentz Group
1962 Singularities in Angular Momentum of the Scattering Amplitude for a Class of Soluble Potentials
1962 Virtual Particles
1963 Construction of Invariant Scattering Amplitudes for Arbitrary Spins and Analytic Continuation in Total Angular Momentum
1963 Crossing Symmetry in S-Matrix Theory
1964 Connection between the Relativistic and Nonrelativistic Form of the Nucleon-Nucleon Amplitude
1964 Dynamical Symmetry Group Based on Dirac Equation and Its Generalization to Elementary Particles
1964 I=0 Pion-Pion Amplitude and S Di-Pion
1964 Nucleon and the Pion-Nucleon Trajectory. Determination of the Pion-Nucleon Coupling Constant
1964 Secondary Diffraction Peaks in Pn and Kn Scatterings
1965 Dynamical Groups and Mass Formula
1965 Dynamics of a Broken Sun Symmetry for the Oscillator
1965 Mass Difference of =- and =0
1965 Production Amplitudes. I. Construction of Invariant Amplitudes
1965 Production Amplitudes. Ii. Partial-Wave Decomposition and Analytic Continuation in Total Angular Momentum
1966 Consequences of Three Discrete Internal Symmetry Transformations for Leptons
1966 Near Forward Peaks in the K-P and P-P Charge-Exchange Scattering
1967 Calculation of Relativistic Transition Probabilities and Form Factors from Noncompact Groups
1967 Calculation of Transition Probabilities from Noncompact Dynamical Groups
1967 Current Operators and Majorana Equation for the Hydrogen Atom from Dynamical Groups
1967 Dynamical Group O(4, 2) for Baryons and the Behavior of Form Factors
1967 Meson Decay Rates in O(4, 2) and the Introduction of Su(3)
1967 Resonance Decays from O(3, 1) Dynamics. a Regularity in the Partial Decay Widths
1967 Strong Decays of Higher Spin Baryon Resonances in O(4,2) Theory
1967 Transition Form Factors in the H Atom
1967 Transition Probabilities of the Hydrogen Atom from Noncompact Dynamical Groups
1968 High-Energy Proton-Proton Scattering and Nucleon Structure
1968 Derivation of Mass Spectrum and Magnetic Moments from Current Conservation
1968 Magnetic Moments, Form Factors, and Mass Spectrum of Baryons
1968 Position Operators and Localizability of Quantum Systems Described By Finite- and Infinite-Dimensional Wave Equations
1968 Reformulation of the Dirac Theory of the Electron
1969 Calculation of the Kl3 Form Factors
1969 Theory of the Heavy Electron
1969 Theory of the Relativistic H Atom and Positronium
1970 Very-High-Energy Limit of Proton-Proton Scattering
1970 Crossing Symmetry in the O(4, 2) Formulation of the Dirac Theory
1970 Realization of Current-Algebra Commutation Relations on the Space of Solutions
1970 Simply Factorizable N-Point Amplitude
1971 Nonrelativistic and Relativistic Coulomb Amplitude as the Matrix Element of a Rotation in O(4,2)
1971 Proton Form Factor, Magnetic Charges, and Dyonium
1972 Infinite-Component Wave Equations and Mass Splittings Within Su(3) and Su(2) Multiplets
1972 Value of the Zeta Parameter in Kl3 Decay from the Pion-Gauge Condition
1973 Kl3 and Pe3 Decays in Terms of the Kemmer Beta Current
1973 New Relativistic Coulomb Hamiltonian with O(4) Symmetry and a Spinor Realization of the Dynamical Group O(4,2)
1974 Electrodynamics in Terms of Retarded Fields
1974 Relativistic Composite Systems and Minimal Coupling
1974 Relativistic Transition Amplitudes in a Class of O(4,2) Infinite Multiplets. I
1974 Relativistic Transition Amplitudes in a Class of O(4,2) Infinite Multiplets. Ii
1974 Spin-Statistics Connection for Dyonium
1974 Theory of the Electromagnetic Structure Functions of the Proton
1976 Electromagnetic Polarizabilities of Nucleons
1976 Inelastic Transition Form Factors in the H Atom
1976 Infinite-Component Fields. I. Electromagnetic Inelastic Form Factors and Structure Functions of the Proton
1976 Infinite-Component Fields. Ii. the Electromagnetic Structure of Bosons
1977 Form-Factor Corrections to Superpositronium and Short-Distance Behavior of the Magnetic Moment of the Electron
1979 Kl3 Form Factors
1979 Lepton Mass Formula.
1981 Magnetic-Moment Operator of the Relativistic Electron
1981 New Type of Vacuum Solutions of Nonlinear Conformally Covariant Coupled Field Equations
1981 Zitterbewegung and the Internal Geometry of the Electron
1982 Upper Limit on the Magnetic Moment of the Neutrino
1983 Neutrino and Antineutrino Elastic Scattering and Photoneutrino Reactions
1983 Capture of a Dirac Monopole by a Magnetic Dipole
1983 Erratum New Type of Vacuum Solutions of Nonlinear Conformally Covariant Coupled Field Equations
1983 Negative-Norm States, Superselection Rules, and the Lepton Family
1983 Relativistic Oscillator Linearly Rising Trajectories and Structure Functions
1984 Classical Model of the Dirac Electron
1984 Complex-Energy Solutions of the Relativistic Kepler Problem at High Energies
1984 Path-Integral Derivation of the Dirac Propagator
1984 Rotational Invariance, Locality, and Einstein-Podolsky-Rosen Experiments
1985 Covariant Generalization of the Zitterbewegung of the Electron and Its So(4,2) and So(3,2) Internal Algebras
1985 Photoproduction of a Neutrino Pair from an Electron and Astrophysical Implications of Neutrino-Emission Processes
1985 Quantum Electrodynamics Based on Self-Energy: Lamb Shift and Spontaneous Emission without Field Quantization
1985 Zitterbewegung of the Electron in External Fields
1986 Quantum Electrodynamics Based on Self-Energy versus Quantization of Fields
1987 Quantum Electrodynamics Based on Self-Energy, without Second Quantization: the Lamb Shift and Long-Range Casimir-Polder Van Der Waals Forces near Boundaries
1987 Exact Solutions of the Dirac Equation in Spatially Flat Robertson-Walker Space-Times
1988 Path Integration via Hamilton-Jacobi Coordinates and Applications to Potential Barriers
1988 Quantum Electrodynamics Based on Self-Fields, without Second Quantization
1988 Relativistic Theory of Spontaneous Emission
1989 Analytic Group-Theoretical Form Factors of Hydrogenlike Atoms for Discrete and Continuum Transitions
1989 Generalization of the Lorentz-Dirac Equation to Include Spin
1989 Quantum Electrodynamics Based on Self-Fields, without Second Quantization Ii
1990 Self-Field Quantum Electrodynamics the Two-Level Atom
1990 Pair Production in an Electric Field in a Time-Dependent Gauge
1990 Quantum Electrodynamics Based on Self-Fields
1990 Regularized Analytic Evaluation of Vacuum Polarization in a Coulomb Field
1991 Interpretation of Self-Field Quantum Electrodynamics
1991 Qed Based on Self-Energy
1992 Band Structure for Neutral Magnetic Dipoles in a Periodic Magnetic Field
1992 Relativistic Theory of the Lamb Shift in Self-Field Quantum Electrodynamics
1992 Retarded Radiation Field and Spontaneous Emission for the Hydrogen Atom as An Emitting Antenna
1973 Some Unusual Applications of Lie Algebra Representations in Quantum Theory
Barut's books[]
Quantum Systems, Barut, Asim O.; Feranchuk, I. D.; Shnir, Yu M., 1995, ISBN9810220995, World Scientific Publishing Company, Incorporated.
Polarization Dynamics in Nuclear & Particle Physics, Barut, Asim O., Paver, N.; Penzo, A.; Raczka, R., 1993, ISBN9810214235, World Scientific Publishing Company.
Spin & Polarization Dynamics in Nuclear & Particle Physics, 1990, ISBN9810200188, World Scientific Publishing Company.
New Frontiers in Quantum Electrodynamics & Quantum Optics, Barut, Asim O., 1990, ISBN0306436698, Plenum Publishing Corporation.
Geometry & Physics, Barut, Asim O., 1989, ISBN8870882241, American Institute of Physics (A I P Press).
Dynamical Groups & Spectrum Generating Algebra, Barut, Asim O.; Bohm, A.; Ne'Eman, Yuval, 1988, ISBN0318420643, World Scientific Publishing Company.
Dynamical Groups & Spectrum Generating Algebra, Barut, Asim O.; Bohm, A.; Ne'Eman, Yuval, 1988, ISBN9971501473, World Scientific Publishing Company.
Scattering Theory, Barut, Asim O. 1969, ISBN0677127308, Gordon & Breach Publishing Group.
Editorships[]
Selected Scientific Papers of E. U. Condon, Barut, Asim O., 1991, ISBN0387974202, Springer-Verlag New York.
Selected Popular Writings of E. U. Condon, Barut, Asim O., 1991, ISBN0387974210, Springer-Verlag New York.
Selected Scientific Papers of Alfred Lande, Barut, Asim O. (ed.), 1987, ISBN9027725942, Kluwer Academic Publishers.
Conformal Groups & Related Symmetries - Physical Results & Mathematical Background, Barut, Asim O. (ed.), 1986, ISBN0387171630, Springer-Verlag New York.
Quantum Space & Time - The Quest Continues, Barut, Asim O. (ed.), 1984, ISBN0521319110, Cambridge University Press.
