ITO-WIENER CHAOS AND THE HODGE DECOMPOSITION ON AN ABSTRACT WIENER SPACE

Using the structure of the Boson-Fermion Fock space and an argument taken from [P. Bieliavsky, M. Cahen, S. Gutt, J. Rawnsley and L. Schwachhofer, Symplectic connections, Int. J. Geom. Meth. Mod. Phys. 3 (2006) 375-420], we give a new proof of the triviality of the L-2 cohomology groups on an abstract Wiener space, alternative to that given by Shigekawa [De Rham-Hodge-Kodaira's decomposition on an abstract Wiener space, J. Math. Kyoto. Univ. 26(2) (1986) 191-202]. We apply the representation theory of the symmetric group to characterize the spaces of exact and co-exact forms in their Boson-Fermion Fock space representation.