Answers are grounded in this paper and cite their sources.
A scheme for representing vectors and matrices as functions of a certain abstract symbol λ is set up: though λ has no numerical significance, it is found to behave as if it were an eigenvalue of a certain singular matrix A. The resulting ‘eigensymbol’ theory is developed and applied to the quantum theory of Fermi systems. It is shown how a Feynman principle for such systems may be formulated in analogy with the familiar Feynman principle for a system with canonical p and q. The results are illustrated by the case of a simple Fermi oscillator.
No takes yet. Share an insight, caveat, or question.
J. L. Martin (1959) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: