2 papers
quant-ph2026
Quantum observables as Fréchet sensitivity kernels
Rafael Abreu
We present a variational--adjoint interpretation of quantum mechanics in which the interaction between forward and adjoint wavefunctions defines a general sensitivity kernel of the…
physics.geo-ph2025
On the Fréchet interaction density of certain wave equations
Rafael Abreu, Chahana Nagesh
We extend the adjoint method to complex-valued PDEs and introduce the \emph{Fréchet interaction density}, as the most fundamental interaction from which Fréchet sensitivity kernels…