Time evolution in quantum systems and stochastics

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The time evolution problem for non-self adjoint second order differential operators is studied by means of the path integral formulation. Explicit computation of the path integral via the use of certain underlying stochastic differential equations, which naturally emerge when computing the path integral, leads to a universal expression for the associated measure regardless of the form of the differential operators. The discrete non-linear hierarchy (DNLS) is then considered and the corresponding hierarchy of solvable, in principle, SDEs is extracted. The first couple members of the hierarchy correspond to the discrete stochastic transport and heat equations. The discrete stochastic Burgers equation is also obtained through the analogue of the Cole-Hopf transformation. The continuum limit is also discussed.
Original languageEnglish
Title of host publicationCentre de Recherches Mathématiques Series
Publication statusAccepted/In press - 6 Feb 2020

Publication series

NameCRM Series

Keywords

  • math-ph
  • math.MP
  • nlin.SI

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    Doikou, A., Malham, S. J. A., & Wiese, A. (Accepted/In press). Time evolution in quantum systems and stochastics. In Centre de Recherches Mathématiques Series (CRM Series).