METHODS FOR ITERATIVE DISENTANGLING IN FEYNMAN’S OPERATIONAL CALCULI : THE CASE OF TIME DEPENDENT NONCOMMUTING OPERATORS

  • Ahn, Byung-Moo (Department of Mathematics, Soonchunhyang University)
  • Received : 2009.09.02
  • Accepted : 2010.02.06
  • Published : 2010.05.30

Abstract

The disentangling map from the commutative algebra to the noncommutative algebra of operators is the essential operation of Feynman's operational calculus for noncommuting operators. Thus formulas which simplify this operation are meaningful to the subject. In a recent paper the procedure for "methods for iterative disentangling" has been established in the setting of Feynman's operational calculus for time independent operators $A_1$, $\cdots$, $A_n$ and associated probability measures${\mu}_1$, $\cdots$, ${\mu}_n$. The main purpose for this paper is to extend the procedure for methods for iterative disentangling to time dependent operators.

Keywords

References

  1. B.M.Ahn, Extracting linear factors in Feynman's operational calculi: the case of time dependent noncommuting operators, Bull. Korean Math. Soc. 41 (2004), 573-587. https://doi.org/10.4134/BKMS.2004.41.3.573
  2. R.Feynman An operator calculus having application in quantum electrodynamics Phys. Rev. 84 (1951), 108-128. https://doi.org/10.1103/PhysRev.84.108
  3. B.Jefferies and G.W.Johnson Feynman's operational calculi for noncommuting operators: Definitions and elementary properties Russian J. Math. Phys. 8 (2001), 153-178.
  4. B.Jefferies and G.W.Johnson Feynman's operational calculi for noncommuting operators: Tensors, ordered supports and disentangling an exponential factor Math. Notes 70 (2001), 744-764. https://doi.org/10.1023/A:1012903732597
  5. B.Jefferies and G.W.Johnson Feynman's operational calculi for noncommuting operators: Spectral theory, Infinite Dimensional Anal. Quantum Probab 5 (2002), 171-199. https://doi.org/10.1142/S021902570200078X
  6. B.Jefferies and G.W.Johnson Feynman's operational calculi for noncommuting operators: The monogenic calculus Adv. Appl. Clifford Algebra 11 (2002), 233-265.
  7. B.Jefferies, G.W.Johnson and B.S.Kim Feynman's operational calculi: Methods for iterative disentangling Acta Appl. Math. 92 (2006), 293-309. https://doi.org/10.1007/s10440-006-9061-2
  8. B.Jefferies, G.W.Johnson and L.Nielsen Feynman's operational calculi for time dependent noncommuting operators J. Korean Math. Soc. 38 (2001), 193-226.
  9. G.W.Johnson and M.L.Lapidus The Feynman integral and Feynman operational calculus Oxford U. Press Oxford 2000.
  10. V.E.Nazaikinskii, V.E.Shatalov and B.Yu.Sternin Methods of Noncommutative Analysis Stud. in Math. 22, Walter de Gruyter Berlin 1996.