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Computers & Mathematics with Applications

Operator spectral states

Karl Gustafson

Published Sep 1, 1997• 15 citations
Publisher
DOI
10.1016/s0898-1221(97)00150-8

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We develop a spectral formulation of physical dynamics based on the action phase ϕ=S/ℏ\phi = S/\hbarϕ=S/ℏ, in which the evolution is governed by Cayley-type unitary operators and organized through the resolvent structure of the underlying structural operator. We show that the propagation can be described by a bilocal kernel associated with the resolvent, whose spectral decomposition defines independent modes of evolution. In this formalism, physical connectivity emerges as an intrinsically nonlocal property of the resolvent kernel, and physical states can be interpreted as stabilized spectral modes. We demonstrate that the existence of massive states is conditioned on the presence of a global phase structure, encoded by holonomy, which prevents the variational collapse of the structural coupling. We also show that phase factors associated with gauge connections admit an interpretation as a manifestation of the accumulated phase of the resolvent under discrete reduction. From this structure, we derive finite-dimensional effective operators as infrared spectral projections of the global operator, establishing the emergence of tridiagonal operators as natural approximations of low-energy dynamics. Finally, we demonstrate that the limitations observed in truncated effective models stem from the suppression of the tail of the bilocal kernel, which dominantly affects the description of highly delocalized states. In particular, the discrepancy associated with the ground state is interpreted as a structural consequence of the loss of global connectivity induced by spectral truncation. These results allow formulating the dynamics as a process of spectral filtering of the action phase, in which structural operators act as unitary filters and physical states emerge as stabilized spectral modes of the resolvent. This perspective leads to a framework we call Spectral Mechanics of Phase.
This work develops the mathematical structure of Relational Retrocausal Quantum Mechanics (RRQM) beginning from its mother-state formulation. Rather than revisiting theinterpretational foundations established in earlier work, we investigate the consequences of treating the mother state as the fundamental object of the theory within a rigged Hilbert space. Starting from the global spectral state, we construct the operator formalism governing spectral evolution and introduce the invariant mass operator as a derived observable actingon the mother state. This naturally leads to an operator formulation of mass expectation values and higher moments, providing a framework in which quantities traditionally regardedas fixed particle parameters emerge from the spectral properties of the underlying state.Building upon this formalism, we investigate the extension of the theory to spinorial wavefunctions, the structure of multiparticle realizations, spectral radiation reaction, and the role of conditional nuclear realizations in observable quantities. We further examine generalized derivative operators and show that their algebra naturally separates into symmetric and antisymmetric sectors, suggesting a possible geometric interpretation of gravitywithin the spectral framework.