Poisson Hierarchy of Discrete Strings

Theodora Ioannidou; Antti Niemi

doi:10.1016/j.physleta.2015.11.005

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arXiv · 1507.05792

Poisson Hierarchy of Discrete Strings

Theodora Ioannidou·Antti Niemi

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Abstract

The Poisson geometry of a discrete string in three dimensional Euclidean space is investigated. For this the Frenet frames are converted into a spinorial representation, the discrete spinor Frenet equa- tion is interpreted in terms of a transfer matrix formalism, and Poisson brackets are introduced in terms of the spinor components. The construction is then generalised, in a self-similar manner, into an infinite hierarchy of Poisson algebras. As an example, the classical Virasoro (Witt) algebra that determines reparametrisation diffeomorphism along a continuous string, is identified as a particular sub-algebra, in the hierarchy of the discrete string Poisson algebra.

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Theodora Ioannidou, Antti Niemi. 2015-07-21. Poisson Hierarchy of Discrete Strings. https://doi.org/10.1016/j.physleta.2015.11.005

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