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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.19206 |
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| _version_ | 1866929519719350272 |
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| author | Sabbagh, Ralph Miangolarra, Olga Movilla Hezari, Hamid Georgiou, Tryphon T. |
| author_facet | Sabbagh, Ralph Miangolarra, Olga Movilla Hezari, Hamid Georgiou, Tryphon T. |
| contents | A class of signed joint probability measures for n arbitrary quantum observables is derived and studied based on quasi-characteristic functions with symmetrized operator orderings of Margenau-Hill type. It is shown that the Wigner distribution associated with these observables can be rigorously approximated by such measures. These measures are given by affine combinations of Dirac delta distributions supported over the finite spectral range of the quantum observables and give the correct probability marginals when coarse-grained along any principal axis. We specialize to bivariate quasi-probability distributions for the spin measurements of spin-1/2 particles and derive their closed-form expressions. As a side result, we point out a connection between the convergence of these particle approximations and the Mehler-Heine theorem. Finally, we interpret the supports of these quasi-probability distributions in terms of repeated thought experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_19206 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Particle approximations of Wigner distributions for n arbitrary observables Sabbagh, Ralph Miangolarra, Olga Movilla Hezari, Hamid Georgiou, Tryphon T. Quantum Physics Mathematical Physics 81S30, 81P15 A class of signed joint probability measures for n arbitrary quantum observables is derived and studied based on quasi-characteristic functions with symmetrized operator orderings of Margenau-Hill type. It is shown that the Wigner distribution associated with these observables can be rigorously approximated by such measures. These measures are given by affine combinations of Dirac delta distributions supported over the finite spectral range of the quantum observables and give the correct probability marginals when coarse-grained along any principal axis. We specialize to bivariate quasi-probability distributions for the spin measurements of spin-1/2 particles and derive their closed-form expressions. As a side result, we point out a connection between the convergence of these particle approximations and the Mehler-Heine theorem. Finally, we interpret the supports of these quasi-probability distributions in terms of repeated thought experiments. |
| title | Particle approximations of Wigner distributions for n arbitrary observables |
| topic | Quantum Physics Mathematical Physics 81S30, 81P15 |
| url | https://arxiv.org/abs/2409.19206 |