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Coherent State Path Integrals without Resolutions of Unity

Quantum Physics 2007-05-23 v1 General Relativity and Quantum Cosmology High Energy Physics - Theory Mathematical Physics math.MP

Abstract

From the very beginning, coherent state path integrals have always relied on a coherent state resolution of unity for their construction. By choosing an inadmissible fiducial vector, a set of ``coherent states'' spans the same space but loses its resolution of unity, and for that reason has been called a set of weak coherent states. Despite having no resolution of unity, it is nevertheless shown how the propagator in such a basis may admit a phase-space path integral representation in essentially the same form as if it had a resolution of unity. Our examples are toy models of similar situations that arise in current studies of quantum gravity.

Keywords

Cite

@article{arxiv.quant-ph/0008132,
  title  = {Coherent State Path Integrals without Resolutions of Unity},
  author = {John R. Klauder},
  journal= {arXiv preprint arXiv:quant-ph/0008132},
  year   = {2007}
}

Comments

12 pages, LaTeX, no figures