Thermal chemical reactivity in Frenkel exciton-polariton cavities
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866910272036274176 |
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| author | Cui, Bingyu Nitzan, Abraham |
| author_facet | Cui, Bingyu Nitzan, Abraham |
| contents | Hybrid light-matter states formed under strong coupling between molecular excitations and confined electromagnetic modes provide a potential route to modify chemical properties. Here we compute and compare a thermally averaged measure of molecular chemical activity for an equilibrium ensemble of molecules inside and outside a planar microcavity, explicitly accounting for the spatial distribution (and hence the in-plane wavevector dispersion) of the coupled light-matter states. Within a generalized Tavis-Cummings description, we find that the cavity-induced change in thermal chemical activity is most pronounced for small molecular ensembles (low areal density within a given cavity mode volume) and increases with the collective coupling strength (Rabi splitting), particularly at low temperatures. These results highlight the importance of the polariton dispersion and molecular-mode counting in assessing cavity modifications of thermally driven molecular reactivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_31188 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Thermal chemical reactivity in Frenkel exciton-polariton cavities Cui, Bingyu Nitzan, Abraham Chemical Physics Hybrid light-matter states formed under strong coupling between molecular excitations and confined electromagnetic modes provide a potential route to modify chemical properties. Here we compute and compare a thermally averaged measure of molecular chemical activity for an equilibrium ensemble of molecules inside and outside a planar microcavity, explicitly accounting for the spatial distribution (and hence the in-plane wavevector dispersion) of the coupled light-matter states. Within a generalized Tavis-Cummings description, we find that the cavity-induced change in thermal chemical activity is most pronounced for small molecular ensembles (low areal density within a given cavity mode volume) and increases with the collective coupling strength (Rabi splitting), particularly at low temperatures. These results highlight the importance of the polariton dispersion and molecular-mode counting in assessing cavity modifications of thermally driven molecular reactivity. |
| title | Thermal chemical reactivity in Frenkel exciton-polariton cavities |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2605.31188 |