Spectral zeta functions of fractals and the complex dynamics of polynomials

Details Spectral zeta functions of fractals and the complex dynamics of polynomials Spectral zeta functions of fractals and the complex dynamics of polynomials

2005-05-25

arxiv.org/abs/math/0505546v2

Mathematics

Spectral Theory

Scientific paper

We obtain formulas for the spectral zeta function of the Laplacian on symmetric finitely ramified fractals, such as the Sierpinski gasket, and a fractal Laplacian on the interval. These formulas contain a new type of zeta function associated with a polynomial (rational functions also can appear in this context). It is proved that this zeta function has a meromorphic continuation to a half plain with poles contained in an arithmetic progression. It is shown as an example that the Riemann zeta function is the zeta functions of a quadratic polynomial, which is associated with the Laplacian on an interval. The spectral zeta function of the Sierpinski gasket is a product of the zeta function of a polynomial and a geometric part; the poles of the former are canceled by the zeros of the latter. A similar product structure was discovered by M.L. Lapidus for self-similar fractal strings.

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