Coarsening of binary Bose superfluids: An effective theory
We derive an effective equation of motion for binary Bose mixtures, which generalizes the Cahn-Hilliard description of classical binary fluids to superfluid systems. Within this approach, based on a microscopic Hamiltonian formulation, we show that the domain growth law L(t)∼t^{2/3} observed in supe...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/2rqw-prly |
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| _version_ | 1849224254217781248 |
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| author | Elisabeth Gliott Clara Piekarski Nicolas Cherroret |
| author_facet | Elisabeth Gliott Clara Piekarski Nicolas Cherroret |
| author_sort | Elisabeth Gliott |
| collection | DOAJ |
| description | We derive an effective equation of motion for binary Bose mixtures, which generalizes the Cahn-Hilliard description of classical binary fluids to superfluid systems. Within this approach, based on a microscopic Hamiltonian formulation, we show that the domain growth law L(t)∼t^{2/3} observed in superfluid mixtures is not driven by hydrodynamic flows, but arises from the competition between interactions and quantum pressure. The effective theory allows us to derive key properties of superfluid coarsening, including domain growth and Porod’s laws. This provides a new theoretical framework for understanding phase separation in superfluid mixtures. |
| format | Article |
| id | doaj-art-e29c7ce2eb9e4bb8950bc795b1bcc1bc |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-e29c7ce2eb9e4bb8950bc795b1bcc1bc2025-08-25T14:13:24ZengAmerican Physical SocietyPhysical Review Research2643-15642025-08-017303318910.1103/2rqw-prlyCoarsening of binary Bose superfluids: An effective theoryElisabeth GliottClara PiekarskiNicolas CherroretWe derive an effective equation of motion for binary Bose mixtures, which generalizes the Cahn-Hilliard description of classical binary fluids to superfluid systems. Within this approach, based on a microscopic Hamiltonian formulation, we show that the domain growth law L(t)∼t^{2/3} observed in superfluid mixtures is not driven by hydrodynamic flows, but arises from the competition between interactions and quantum pressure. The effective theory allows us to derive key properties of superfluid coarsening, including domain growth and Porod’s laws. This provides a new theoretical framework for understanding phase separation in superfluid mixtures.http://doi.org/10.1103/2rqw-prly |
| spellingShingle | Elisabeth Gliott Clara Piekarski Nicolas Cherroret Coarsening of binary Bose superfluids: An effective theory Physical Review Research |
| title | Coarsening of binary Bose superfluids: An effective theory |
| title_full | Coarsening of binary Bose superfluids: An effective theory |
| title_fullStr | Coarsening of binary Bose superfluids: An effective theory |
| title_full_unstemmed | Coarsening of binary Bose superfluids: An effective theory |
| title_short | Coarsening of binary Bose superfluids: An effective theory |
| title_sort | coarsening of binary bose superfluids an effective theory |
| url | http://doi.org/10.1103/2rqw-prly |
| work_keys_str_mv | AT elisabethgliott coarseningofbinarybosesuperfluidsaneffectivetheory AT clarapiekarski coarseningofbinarybosesuperfluidsaneffectivetheory AT nicolascherroret coarseningofbinarybosesuperfluidsaneffectivetheory |