TY - JOUR A1 - Gosson, Maurice A. de A1 - Gosson, Serge M. de T1 - Extension of the Conley-Zehnder index, a product formula, and an application to the Weyl representation of metaplectic operators JF - Journal of mathematical physics N2 - The aim of this paper is to express the Conley-Zehnder index of a symplectic path in terms of an index due to Leray and which has been studied by one of us in a previous work. This will allow us to prove a formula for the Conley-Zehnder index of the product of two symplectic paths in terms of a symplectic Cayley transform. We apply our results to a rigorous study of the Weyl representation of metaplectic operators, which plays a crucial role in the understanding of semiclassical quantization of Hamiltonian systems exhibiting chaotic behavior. Y1 - 2006 U6 - https://doi.org/10.1063/1.239066 SN - 0022-2488 VL - 47 IS - 12 PB - American Institute of Physics CY - Melville ER -