Effervescence in a binary mixture with nonlinear non-reciprocal interactions
Abstract Non-reciprocal interactions between scalar fields that represent the concentrations of two active species are known to break the parity and time-reversal (PT) symmetries of the equilibrium state, as manifested in the emergence of travelling waves. We explore the notion of nonlinear non-reci...
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Nature Portfolio
2025-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-61728-8 |
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| _version_ | 1849332184140218368 |
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| author | Suropriya Saha Ramin Golestanian |
| author_facet | Suropriya Saha Ramin Golestanian |
| author_sort | Suropriya Saha |
| collection | DOAJ |
| description | Abstract Non-reciprocal interactions between scalar fields that represent the concentrations of two active species are known to break the parity and time-reversal (PT) symmetries of the equilibrium state, as manifested in the emergence of travelling waves. We explore the notion of nonlinear non-reciprocity and consider a model in which the non-reciprocal interactions can depend on the local values of the scalar fields in such a way that the non-reciprocity can change sign. For generic cases where such couplings exist, we observe the emergence of spatiotemporal chaos in the steady-state. We associate this chaotic behaviour with a local restoration of PT symmetry in fluctuating spatial domains, which leads to the coexistence of oscillating densities and phase-separated droplets that are spontaneously created and annihilated. We uncover that this phenomenon, which we denote as effervescence, can exist as a dynamical steady-state in large parts of the parameter space in two different incarnations, as characterised by the presence or absence of an accompanying travelling wave. |
| format | Article |
| id | doaj-art-c85d48af7b8a4e0cad89f1313d2eecde |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c85d48af7b8a4e0cad89f1313d2eecde2025-08-20T03:46:17ZengNature PortfolioNature Communications2041-17232025-08-0116111610.1038/s41467-025-61728-8Effervescence in a binary mixture with nonlinear non-reciprocal interactionsSuropriya Saha0Ramin Golestanian1Max Planck Institute for Dynamics and Self-Organization (MPIDS)Max Planck Institute for Dynamics and Self-Organization (MPIDS)Abstract Non-reciprocal interactions between scalar fields that represent the concentrations of two active species are known to break the parity and time-reversal (PT) symmetries of the equilibrium state, as manifested in the emergence of travelling waves. We explore the notion of nonlinear non-reciprocity and consider a model in which the non-reciprocal interactions can depend on the local values of the scalar fields in such a way that the non-reciprocity can change sign. For generic cases where such couplings exist, we observe the emergence of spatiotemporal chaos in the steady-state. We associate this chaotic behaviour with a local restoration of PT symmetry in fluctuating spatial domains, which leads to the coexistence of oscillating densities and phase-separated droplets that are spontaneously created and annihilated. We uncover that this phenomenon, which we denote as effervescence, can exist as a dynamical steady-state in large parts of the parameter space in two different incarnations, as characterised by the presence or absence of an accompanying travelling wave.https://doi.org/10.1038/s41467-025-61728-8 |
| spellingShingle | Suropriya Saha Ramin Golestanian Effervescence in a binary mixture with nonlinear non-reciprocal interactions Nature Communications |
| title | Effervescence in a binary mixture with nonlinear non-reciprocal interactions |
| title_full | Effervescence in a binary mixture with nonlinear non-reciprocal interactions |
| title_fullStr | Effervescence in a binary mixture with nonlinear non-reciprocal interactions |
| title_full_unstemmed | Effervescence in a binary mixture with nonlinear non-reciprocal interactions |
| title_short | Effervescence in a binary mixture with nonlinear non-reciprocal interactions |
| title_sort | effervescence in a binary mixture with nonlinear non reciprocal interactions |
| url | https://doi.org/10.1038/s41467-025-61728-8 |
| work_keys_str_mv | AT suropriyasaha effervescenceinabinarymixturewithnonlinearnonreciprocalinteractions AT ramingolestanian effervescenceinabinarymixturewithnonlinearnonreciprocalinteractions |