Hiroshi Enatsu
Hiroshi Enatsu  

Born  Miyakonojō, Japan  September 12, 1922
Died  August 4, 2019 Kyoto, Japan  (aged 97)
Nationality  Japan 
Citizenship  Japanese 
Alma mater  Kyoto University 
Scientific career  
Fields  Theoretical physics 
Institutions 

Doctoral advisor  Hideki Yukawa 
Influences  Niels Bohr 
Hiroshi Enatsu (12 September 1922  4 August 2019) was a Japanese theoretical physics who contributed to a special relativity Hamiltonian mechanics formalism in quantum field theory.
Academic works
Enatsu has found ^{[1]}that the Canonical commutation relation ^{[2]} <math>[\psi (x, \tau), \psi ^*(x', \tau)] = \delta ( x  x' )</math> in a relativistic Hamiltonian formalism is equivalent to that in the conventional nonrelativistic Hamiltonian formalism of quantum field theory, where <math>[\psi, \phi] = \psi \phi  \phi \psi</math> is the commutator, <math> x </math> is spacetime coordinates, <math>\tau</math> is proper time, <math>\psi ^*</math> is Hermitian adjoint of <math>\psi</math>, and <math>\delta (x)</math> is the Dirac delta function, with the aid of the relation <math>\epsilon ( x  x' ) \epsilon ( \tau  \tau' )=1</math>.
Biography
 1922 born on September 12 in Miyakonojō as a son of Eizo and Fumi (Kuroiwa) Enatsu
 1944 received Bachelor of Science from Kyoto University
 1953 received Doctor of Science ^{[3]} from Kyoto University
 1946  1957 assistant at Kyoto University^{[4]}^{[5]}
 1952  1953 research assistant at Columbia University ^{[6]} in New York City
 1955  1956 visiting member of the Institute for Theoretical Physics in Copenhagen^{[7]}^{[8]}
 1957 assistant professor and inaugurated a professor at Ritsumeikan University in Kyoto
 1971 to 1972 the Dean of faculty of science and engineering at Ritsumeikan University
 1988 retired from a professor at Ritsumeikan University in Kyoto, and has been a professor emeritus
 2019 died on 4 August in Kyoto ^{[9]}
Research articles
 On the Photodisintegration of the Deuteron (Pseudoscalar Meson Theory.), December 1949
 On the Nuclear Forces, February 1950
 On the Interaction of Mesons and Nucleons, September 1950
 On the Mass of Cohesive Meson and the Mass Difference Of Nucleon, April 1951
 On the Mass of Cohesive Meson and the Mass Difference of Nucleons, II, June 1951
 On the Mass Difference of Nucleons and the Cohesive Mesons, October 1951
 On the Selfenergies of Mesons, October 1951
 On the SelfEnergies of Nucleons, October 1951
 SelfEnergies of Nucleons and the Mass Spectra of Heavy Particles, February 1952
 Mass Spectrum of Elementary Particles I: Eigenvalue Problem in Spacetime, February 1954
 Theory of Unstable Heavy Particles, July 1954
 Relativistic quantum mechanics and massquantization, 1956
 Relativistic Hamiltonian Formalism in Quantum Field Theory and MicroNoncausality, August 1963
 Covariant Hamiltonian Formalism for Particles of any Spin and Nonzero Mass, 1968
 Covariant Hamiltonian formalism for quantized fields and the hydrogen mass levels, 1975
 Protonproton scattering problem in a covariant Hamiltonian formalism, 1976
 Micrononcausal euclidean wave functions for hadrons, February 1978
 Hyperfine structure splittings of the hydrogen atom in a covariant Hamiltonian formalism , 1983
 BetheSalpeter type equations for a covariant Hamiltonian formalism in quantum field theory, 1984
 Quantization of masses of elementary particles with micrononcausal structures, October 1986
 Quantization of the mass of the Wboson in the WeinbergSalam theory, 1988
References
 ↑ Matej Pavšič, "The Landscape of Theoretical Physics: A Global View, From Point Particles to the Brane World and Beyond, in Search of a Unifying Principle", Kluwer Academic, 2001
 ↑ Relativistic Hamiltonian Formalism in Quantum Field Theory and MicroNoncausality, August 1963
 ↑ Doctoral dissertation on nucleon selfenergy and mass spectrum of elementary particles
 ↑ Prof. Yukawa to Hiroshi Enatsu (Overseas News)
 ↑ Prof. Yukawa to Hiroshi Enatsu (Overseas News)
 ↑ Theory of Unstable Heavy Particles, received May 1953, published July 1954
 ↑ Niels Bohr Private Correspondence
 ↑ Niels Bohr Private Correspondence
 ↑ Intelligence: Dr. Hiroshi Enatsu
External links
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