On the complete analytic structure of the massive gravitino propagator in four-dimensional de Sitter space

Details On the complete analytic structure of the massive gravitino propagator in four-dimensional de Sitter space On the complete analytic structure of the massive gravitino propagator in four-dimensional de Sitter space

2009-07-21

arxiv.org/abs/0907.3634v3

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 9 figures. The presentation has been further improved

Scientific paper

With the help of the general theory of the Heun equation, this paper completes previous work by the authors and other groups on the explicit representation of the massive gravitino propagator in four-dimensional de Sitter space. As a result of our original contribution, all weight functions which multiply the geometric invariants in the gravitino propagator are expressed through Heun functions, and the resulting plots are displayed and discussed after resorting to a suitable truncation in the series expansion of the Heun function. It turns out that there exist two ranges of values of the independent variable in which the weight functions can be divided into dominating and sub-dominating family.

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