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quant-ph2025
Quantum theory from classical mechanics near equilibrium
Albert Schwarz
We consider classical theories described by Hamiltonians that have a non-degenerate minimum at the point where generalized momenta and generalized coordinates vani…
quant-ph2024
Adiabatic definitions of scattering matrix and inclusive scattering matrix
Albert Schwarz
The main goal of present paper is to analyze the adiabatic definition of scattering matrix in the formalism of L-functionals. This definition leads to the notion of inclusive scatt…
quant-ph2023★ 1 cited
Quantum mechanics and quantum field theory. Algebraic and geometric approaches
Igor Frolov, Albert Schwarz
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory including some recent results. It is based on the algebraic approach where the s…