Abstract
In a previous publication (Boletin de la Sociedad Matematica Mexicana 1975) it was established that any weakly stationary linearly regular stochastic process is unitarily equivalent to a quantum mechanical momentum evolution. The object of the present note is, as promised in the previous publication, to amplify some of the details concerning the just mentioned interesting connection, giving in particular a direct proof of the Szego-Kolmolgorov-Krein characterization of regular stationary processes. We also show that although the so-called decaying states without regeneration do not exist for unstable quantum systems, they are natural for regular stationary processes.
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Gustafson, K. and Misra, B., ‘Correlations and Evolution Equations’. Proc. III Mexico-United States Symp. on Diff. Eqns., Mexico City, Jan. 1975, Boletin de la Sociedad Matematica Mexicana, 1975.
KarhunenK., ‘Ueber lineare Methoden in der Wahrscheinlichkeitsrechnung’, Ann. Acad. Sci. Fennicae, A., I, 37 (1947).
CramérH., Structural and Statistical Problems for a Class of Stochastic Processes Princeton Univ. Press, Princeton, N.J., 1971.
RozanovYu. A., Stationary Random Processes, Holden-Day, San Francisco, 1967.
WilliamsD., ‘Difficulty with a Kinematic Concept of Unstable Particles; the Sz. Nagy Extension and the Mathews-Salam-Zwanziger Representation’, Commun. Math Phys. 21 (1971), 314–333.
HorwitzL., LaVitaJ., and MarchandJ., ‘The Inverse Decay Problem’, J. Math. Phys. 12 (1971), 2537–2543.
FondaL. and GhirardiG.C., Nuovo Cim. 7A (1972), 180.
SinhaK., ‘On the Decay of an Unstable Particle’, Helv. Phys. Acta. 45 (1972), 619–628.
Mackey, G. W., ‘The Theory of Group Representations’ Mimeographed notes, Univ. of Chicago (1955).
JauchJ.M., Foundations of Quantum Mechanics, Addison-Wesley, Massachusetts, 1968.
HidaT., Stationary Stochastic Processes, Princeton Univ. Press., Princeton, N.J., 1970.
PutnamC., Commutation Properties of Hilbert Space Operators and Related Topics, Springer-Verlag, Berlin, 1967.
PaleyR. and WienerN., Fourier Transforms in the Complex Domain, Amer. Math. Soc., Providence, R.I., 1934.
DymH. and McKeanH.P., Fourier Series and Integrals, Academic Press, New York, 1972.
FriedrichsK., Perturbation of Spectra in Hilbert Space, Amer. Math. Soc., Providence, R.I., 1965.
SianiJa. G., ‘Dynamical Systems with Countable Lebesgue Spectrum’, Izv. Akad. Nauk SSSR 25 (1961), 899–924.
LaxP. and PhillipsR.S., Scattering Theory, Academic Press, New York, 1967.
KallianpurG. and MandrekarV., ‘Multiplicity and Representation Theory of Purely Nondeterministic Processes”, Theorija Veroj, iee Premen 10 (1965), 533–581.
Levinson, N., Gap and Density Theorems, Amer. Math. Soc. Colloq. Publ. 26, Providence, R.I., 1940.
InghamA., ‘A Note on Fourier Transforms’, J. London Math. Soc. 9 (1934), 23–32.
BoasR. and SmithiesF., ‘On the Characterization of a Distribution Function by its Fourier Transform’, Amer. J. Math. 51 (1938), 523–531.
TjøstheimD., ‘A Commutation Relation for Wide Sense Stationary Processes’, SIAM J. Appl. Math. 30 (1976), 115–122.
ErsakI., Sov. J. Nucl. Phys. 9 (1969), 263.
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Gustafson, K., Misra, B. Canonical commutation relations of quantum mechanics and stochastic regularity. Lett Math Phys 1, 275–280 (1976). https://doi.org/10.1007/BF00398481
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DOI: https://doi.org/10.1007/BF00398481