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Three-dimensional droplets of swirling superfluids
dc.contributor.author | Kartashov, Yaroslav V. |
dc.contributor.author | Malomed, Boris A. |
dc.contributor.author | Tarruell, Leticia |
dc.contributor.author | Torner Sabata, Lluís |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2018-08-02T11:08:23Z |
dc.date.available | 2018-08-02T11:08:23Z |
dc.date.issued | 2018-07-12 |
dc.identifier.citation | Kartashov, Y.V., Malomed, B., Tarruell, L., Torner, L. Three-dimensional droplets of swirling superfluids. "Physical review A", 12 Juliol 2018, vol. 98, núm. 1, p. 013612-1-013612-9. |
dc.identifier.issn | 2469-9926 |
dc.identifier.other | https://arxiv.org/abs/1806.08570 |
dc.identifier.uri | http://hdl.handle.net/2117/120489 |
dc.description.abstract | A new method for the creation of 3D solitary topological modes, corresponding to vortical droplets of a two-component dilute superfluid, is presented. We use the recently introduced system of nonlinearly coupled Gross-Pitaevskii equations, which include contact attraction between the components, and quartic repulsion stemming from the Lee-Huang-Yang correction to the mean-field energy. Self-trapped vortex tori, carrying the topological charges m1=m2=1 or m1=m2=2 in their components, are constructed by means of numerical and approximate analytical methods. The analysis reveals stability regions for the vortex droplets (in broad and relatively narrow parameter regions for m1=m2=1 and m1=m2=2, respectively). The results provide the first example of stable 3D self-trapped states with the double vorticity, in any physical setting. The stable modes are shaped as flat-top ones, with the space between the inner hole, induced by the vorticity, and the outer boundary filled by a nearly constant density. On the other hand, all modes with hidden vorticity, i.e., topological charges of the two components m1=-m2=1, are unstable. The stability of the droplets with m1=m2=1 against splitting (which is the main scenario of possible instability) is explained by estimating analytically the energy of the split and un-split states. The predicted results may be implemented, exploiting dilute quantum droplets in mixtures of Bose-Einstein condensates. |
dc.language.iso | eng |
dc.publisher | American Physical Society (APS) |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Solitons |
dc.subject.other | Vortices in superfluids |
dc.subject.other | Bose-Einstein condensates |
dc.subject.other | Solitons |
dc.title | Three-dimensional droplets of swirling superfluids |
dc.type | Article |
dc.subject.lemac | Solitons |
dc.contributor.group | Universitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica |
dc.identifier.doi | 10.1103/PhysRevA.98.013612 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://link.aps.org/doi/10.1103/PhysRevA.98.013612 |
dc.rights.access | Open Access |
local.identifier.drac | 23310438 |
dc.description.version | Postprint (author's final draft) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/H2020/641122/EU/Quantum simulations of insulators and conductors/QUIC |
local.citation.author | Kartashov, Y.V.; Malomed, B.; Tarruell, L.; Torner, L. |
local.citation.publicationName | Physical review A |
local.citation.volume | 98 |
local.citation.number | 1 |
local.citation.startingPage | 013612-1 |
local.citation.endingPage | 013612-9 |
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