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- W2118032949 abstract "A non‐Hermitian matrix Hamiltonian H appears in the wavefunction form of a variety of many‐body scattering theories. This operator acts on an arrangement channel Banach or Hilbert space C = ⊕αH where H is the N‐particle Hilbert space and α are certain arrangement channels. Various aspects of the spectral and semigroup theory for H are considered. The normalizable and weak (wavelike) eigenvectors of H are naturally characterized as either physical or spurious. Typically H is scalar spectral and ’’equivalent’’ to H on an H‐invariant subspace of physical solutions. If the eigenvectors form a basis, by constructing a suitable biorthogonal system, we show that H is scalar spectral on C. Other concepts including the channel space observables, trace class and trace, density matrix and Möller operators are developed. The sense in which the theory provides a ’’representation’’ of N‐particle quantum mechanics and its equivalence to the usual Hilbert space theory is clarified." @default.
- W2118032949 created "2016-06-24" @default.
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- W2118032949 date "1981-08-01" @default.
- W2118032949 modified "2023-10-17" @default.
- W2118032949 title "The mathematical structure of arrangement channel quantum mechanics" @default.
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- W2118032949 doi "https://doi.org/10.1063/1.525112" @default.
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