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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.01885 |
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| _version_ | 1866915828350320640 |
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| author | Aucar, Juan J. Stroppa, Alessandro Aucar, Gustavo A. |
| author_facet | Aucar, Juan J. Stroppa, Alessandro Aucar, Gustavo A. |
| contents | When the weak-forces producing parity-violating effects are taken into account, there is a tiny energy difference between the total electronic energies of two enantiomers ($ΔE_{PV}$), which might be the key to understand the evolution of the biological homochirality. We focus on the electronic chirality measure ($ECM$), a powerful descriptor based on the electronic charge density, for quantifying the chirality degree of a molecule, for a representative set of chiral molecules, together with their E$_{PV}$ energies. Our results show a novel, strong and \textit{positive} correlation between $ΔE_{PV}$ and $ECM$, supporting a subtle interplay between the weak-forces acting within the nuclei of a given molecule and its chirality. These findings suggest that experimental investigations for molecular parity violation detection should consider molecules with as large $ECM$ values as possible, and may support that a chiral signature is imprinted on life by fundamental physics via the parity-violating weak interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_01885 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Relationship between the Molecular Parity-Violation Energy and the Electronic Chirality Measure Aucar, Juan J. Stroppa, Alessandro Aucar, Gustavo A. Chemical Physics Materials Science When the weak-forces producing parity-violating effects are taken into account, there is a tiny energy difference between the total electronic energies of two enantiomers ($ΔE_{PV}$), which might be the key to understand the evolution of the biological homochirality. We focus on the electronic chirality measure ($ECM$), a powerful descriptor based on the electronic charge density, for quantifying the chirality degree of a molecule, for a representative set of chiral molecules, together with their E$_{PV}$ energies. Our results show a novel, strong and \textit{positive} correlation between $ΔE_{PV}$ and $ECM$, supporting a subtle interplay between the weak-forces acting within the nuclei of a given molecule and its chirality. These findings suggest that experimental investigations for molecular parity violation detection should consider molecules with as large $ECM$ values as possible, and may support that a chiral signature is imprinted on life by fundamental physics via the parity-violating weak interactions. |
| title | A Relationship between the Molecular Parity-Violation Energy and the Electronic Chirality Measure |
| topic | Chemical Physics Materials Science |
| url | https://arxiv.org/abs/2603.01885 |