Publications in general relativity General Transformation Formulas for Fermi-Walker Coordinates, D. Klein and P. Collas, Classical and Quantum Gravity, 25, (2008) 145019. (http://stacks.iop.org/0264-9381/25/145019). pdf A Statistical Mechanical Problem in Schwarzschild Spacetime, P. Collas and D. Klein, General Relativity and Gravitation, 39, 737 (2007). pdf Causality Violating Geodesics in Bonnor's Rotating Dust Metric, P. Collas and D. Klein, General Relativity and Gravitation, 36, 2549 (2004). pdf A Simple Criterion for Nonrotating Reference Frames, P. Collas and D. Klein, General Relativity and Gravitation, 36, 1493 (2004). pdf Frame Dragging Anomalies for Rotating Bodies, P. Collas and D. Klein, General Relativity and Gravitation, 36, 1197 (2004). pdf Simple tests for proposed interior Kerr metrics, P. Collas, Lettere al Nuovo Cimento, 21, 68 (1978). (Misprint corrections in 22, 472 (1978).) pdf General Relativity in two- and three-dimensional space-times, P. Collas, American Journal of Physics, 45, 833 (1977). pdf Trapped null geodesics in a rotating interior metric, P. Collas and J. K. Lawrence, General Relativity and Gravitation, 7, 715 (1976). pdf
Publications in other areas Convergence of Hamiltonian systems to billiards, P. Collas, D.Klein and H-P. Schwebler, CHAOS, 8, 466 (1998). pdf An ergodic adding machine on the Cantor set, P. Collas and D. Klein, L'Enseignement Mathématique, 40, 249 (1994). pdf Quantum mechanics vs spectral differential geometry, P. Collas, Physics Letters, A149, 179, (1990). Acoustic levitation in the presence of gravity. P. Collas, M. Barmatz and C. Shipley, Journal of the Acoustical Society of America, 86, 777 (1989). pdf Metamorphosis from the viewpoint of differential geometry, P. Collas, Physics Letters, A135, 151 (1989). Acoustic radiation force on a particle in a temperature gradient, P. Collas and M. Barmatz, Journal of the Acoustical Society of America, 81, 1327 (1987). pdf Acoustic radiation potential on a sphere in plane, cylindrical, and spherical standing wave fields, M. Barmatz and P. Collas, Journal of the Acoustical Society of America, 77, 928 (1985). pdf Acoustic radiation force on a sphere in plane, cylindrical and spherical standing wave fields, M. Barmatz and P. Collas, Proceedings of the 11me Congrés International D'Acoustique, 245, Paris (1983). Equivalent potentials in classical mechanics, P. Collas, Journal of Mathematical Physics, 22, 2512 (1981). pdf Scattering in parabolic coordinates and a new representation for the scattering amplitude, T. Azzarelli and P. Collas, Physical Review, D12, 3237 (1975). pdf Sommerfeld-Watson representation without poles, T. Azzarelli and P. Collas, Lettere al Nuovo Cimento, 12, 601 (1975). Algebraic solution of the Kepler problem using the Runge-Lenz vector, American Journal of Physics, 38, 253 (1970). pdf Response of linear structures to classes of pressure fields. I. Deterministic nonconvecting fields, M. G. Cottis and P. Collas, Journal of the Acoustical Society of America, 46, 678 (1967). pdf Observable effects of the leading Landau singularity of the box graph, P. Collas and R. E. Norton, Physical Review, 160, 1346 (1967). pdf
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