James W. York

James W. York Jr. (born July 3, 1939 in Raleigh, North Carolina) is an American mathematical physicist who contributed to the theory of general relativity. In any physical theory, it is important to understand when solutions to the fundamental field equation exist, and answering this question has been a theme of York's scientific work, with Yvonne Choquet-Bruhat, of formulating the Einstein field equation as a well-posed system in the sense of the theory of partial differential equations.

York earned his B.Sc. in 1962 and his Ph.D. in 1966 from North Carolina State University.^[1]

York used conformal geometry in the initial value problem, and introduced concepts now called the and .

York is a recipient of the Dannie Heineman Prize for Mathematical Physics from the American Physical Society, where he is a Fellow.

See also[]

• Gibbons–Hawking–York boundary term

References[]

• "Profile at APS". Retrieved October 1, 2012.
• York, J. W. (1971). "Gravitational degrees of freedom and the initial-value problem". Phys. Rev. Lett. 26 (26): 1656–1658. Bibcode:1971PhRvL..26.1656Y. doi:10.1103/PhysRevLett.26.1656.
• York, J. W. (1973). "The role of conformal 3-geometry in the dynamics of gravitation". Phys. Rev. Lett. 28 (16): 1082–1085. Bibcode:1972PhRvL..28.1082Y. doi:10.1103/PhysRevLett.28.1082.
• Ó Murchadha, N., York, J. W. (1974). "Initial-value problem of general relativity I - General formulation and physical interpretation". Phys. Rev. D. 10 (2): 428–436. Bibcode:1974PhRvD..10..428O. doi:10.1103/PhysRevD.10.428.CS1 maint: multiple names: authors list (link)

External links[]

• York's web page at NCSU

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