Observable-enriched entanglement
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909586963824640 |
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| author | Winter, Joe H. Ay, Reyhan Braunecker, Bernd Cook, A. M. |
| author_facet | Winter, Joe H. Ay, Reyhan Braunecker, Bernd Cook, A. M. |
| contents | We introduce methods of characterizing entanglement, in which entanglement measures are enriched by the matrix representations of operators for observables. These observable operator matrix representations can enrich the partial trace over subsets of a system's degrees of freedom, yielding reduced density matrices useful in computing various measures of entanglement, which also preserve the observable expectation value. We focus here on applying these methods to compute observable-enriched entanglement spectra, unveiling new bulk-boundary correspondences of canonical four-band models for topological skyrmion phases and their connection to simpler forms of bulk-boundary correspondence. Given the fundamental roles entanglement signatures and observables play in study of quantum many body systems, observable-enriched entanglement is broadly applicable to myriad problems of quantum mechanics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_09153 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Observable-enriched entanglement Winter, Joe H. Ay, Reyhan Braunecker, Bernd Cook, A. M. Quantum Physics Strongly Correlated Electrons Superconductivity We introduce methods of characterizing entanglement, in which entanglement measures are enriched by the matrix representations of operators for observables. These observable operator matrix representations can enrich the partial trace over subsets of a system's degrees of freedom, yielding reduced density matrices useful in computing various measures of entanglement, which also preserve the observable expectation value. We focus here on applying these methods to compute observable-enriched entanglement spectra, unveiling new bulk-boundary correspondences of canonical four-band models for topological skyrmion phases and their connection to simpler forms of bulk-boundary correspondence. Given the fundamental roles entanglement signatures and observables play in study of quantum many body systems, observable-enriched entanglement is broadly applicable to myriad problems of quantum mechanics. |
| title | Observable-enriched entanglement |
| topic | Quantum Physics Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2312.09153 |