Title: General Construction of Bra-Ket Formalism for Identical Particle Systems in Rigged Hilbert Space Approach

Abstract: This study discussed Dirac's bra-ket formalism for the identical particles system to extend the rigged Hilbert space reformulated by R. Madrid [J. Phys. A:Math. Gen. 37, 8129 (2004)]. The bra and ket vectors for a composite system that form the basis of an identical particle system were reconstructed using the tensor product of rigged Hilbert space.They were found to be characterized in the dual spaces of the tensor product of nuclear spaces. The proofs utilized in this paper adopt a format similar to that used in physics, yet they will be mathematically rigorous. This formulation lays the foundation for modern quantum theories based on perturbation theory, such as quantum statistical mechanics and quantum field theory.