It is shown how to introduce a geometric description of the algebraic approach to the non-relativistic quantum mechanics. It turns out that the GNS representation provides not only symplectic but also Hermitian realization of a `quantum Poisson algebra'. We discuss alternative Hamiltonian structures emerging out of different GNS representations which provide a natural setting for quantum bi-Hamiltonian systems.
Metric tensors and two-forms in information geometry from the GNS construction
Universidad Carlos III de Madrid(马德里卡洛斯三世大学);Instituto de Ciencias Matemáticas ICMAT (CSIC-UAM-UC3M-UCM)(数学科学研究所 ICMAT);Universidad Complutense de Madrid(马德里康普顿斯大学)
We consider defining a fuzzy space by a specific state in a fermionic field theory in terms of which all the observables for the space can be evaluated. This allows for a definition of entanglement for a fuzzy space by direct integration of the fields over a certain region. Even though the resulting formula for the entanglement entropy (EE) is similar to what has been used in the quantum Hall effect, our derivation provides a novel perspective. We also review and strengthen the arguments for the EE to be described by a generalized Chern-Simons form.