222 citations · 1.4k across the 117 of their papers we have counts for
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Weak Coherent State Path Integrals
Lorenz Hartmann, John R. Klauder
Weak coherent states share many properties of the usual coherent states, but do not admit a resolution of unity expressed in terms of a local integral. They arise e.g. in the case…
How far apart are classical and quantum systems?
John R. Klauder
As is well known, classical systems approximate quantum ones -- but how well? We introduce a definition of a "distance" on classical and quantum phase spaces that offers a measure…
Overcoming Nonrenormalizability -- Part 2
John R. Klauder
The procedures to overcome nonrenormalizability of ϕ^4_n, n\ge5, quantum field theory models that were presented in a recent paper are extended to address nonrenormalizability of ϕ…
Generalization of the Darboux transformation and generalized harmonic oscillators
Dae-Yup Song, John R. Klauder
The Darbroux transformation is generalized for time-dependent Hamiltonian systems which include a term linear in momentum and a time-dependent mass. The formalism for the -fold…
Affine Quantum Gravity
John R. Klauder
A sketch of the affine quantum gravity program illustrates a different perspective on several difficult issues of principle: metric positivity; quantum anomalies; and nonrenormaliz…
The Feynman Path Integral: An Historical Slice
John R. Klauder
Efforts to give an improved mathematical meaning to Feynman's path integral formulation of quantum mechanics started soon after its introduction and continue to this day. In the pr…