Tootfinder

Rogue waves collision under incident momentum modulation in two-component Bose-Einstein condensates
Zhihao Zhang, Tiantian Li, Xiao-Dong Bai, Yunbo Zhang, Denglong Wang
https://arxiv.org/abs/2506.08420

Rogue waves collision under incident momentum modulation in two-component Bose-Einstein condensates
The collision dynamics of two first-order rogue waves (RWs) with opposite incident momentum in two-component Bose-Einstein condensates (BECs) is studied by solving the two-component one-dimensional Gross-Pitaevskii (GP) equation. It is demonstrated that the introduction of appropriate incident momentum successfully promotes the generation of second-order RWs in the case of relatively weaker interspecies interactions compared to intraspecific interactions. The range of incident momentum that can…

Interspecies communication is difficult. For example, when I close the curtains, it means "I am going to bed now", but the seagulls interpret this as "Oh no, last call, better knock on the window for that last bit of leftovers!" <tired face>
How are we going to manage when/if some form of alien life shows up someday?

Dynamic formation of supersolid phase in a mixture of ultracold bosonic and fermionic atoms
Maciej Lewkowicz, Tomasz Karpiuk, Mariusz Gajda, Miros{\l}aw Brewczyk
https://arxiv.org/abs/2506.03717

Dynamic formation of supersolid phase in a mixture of ultracold bosonic and fermionic atoms
We numerically study the dynamical properties of a mixture consisting of a dipolar condensate and a degenerate Fermi gas in a quasi-one-dimensional geometry. In particular, we focus on the system's response to a temporal variation in the interaction strength between bosons and fermions. When the interspecies attraction becomes sufficiently strong, we observe a phase transition to a supersolid state. This conclusion is supported by the emergence of an out-of-phase Goldstone mode in the excitatio…

Confinement-induced resonances for the creation of quasi-1D ultra cold gases of alkali--alkaline-earth dimers
Lorenzo Oghittu, Premjith Thekkeppatt, Nirav P. Mehta, Seth T. Rittenhouse, Klaasjan van Druten, Florian Schreck, Arghavan Safavi-Naini
https://arxiv.org/abs/2506.02579

Confinement-induced resonances for the creation of quasi-1D ultra cold gases of alkali--alkaline-earth dimers
We theoretically investigate the role of confinement-induced resonances (CIRs) in low-dimensional ultracold atomic mixtures for the formation of weakly bound dimers. To this end, we examine the scattering properties of a binary atomic mixture confined by a quasi-one-dimensional (quasi-1D) potential. In this regime, the interspecies two-body interaction is modeled as an effective 1D zero-range pseudopotential, with a coupling strength $g_\mathrm{1D}$ derived as a function of the three-dimensiona…

This https://arxiv.org/abs/2503.14363 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Transitions to Intermittent Chaos in Quorum Sensing Dynamics
This study analyses the dynamical consequences of heterogeneous temporal delays within a quorum sensing-inspired (QS-inspired) system, specifically addressing the differential response kinetics of two sub-populations to signalling molecules. A nonlinear delay differential equation (DDE) model, predicated upon an activator-inhibitor framework, is formulated to represent the interspecies interactions. Key analytical techniques, including the derivation of the pseudo-characteristic polynomial and …

Creation of a degenerate Bose-Bose mixture of erbium and lithium atoms
Jasmine Kalia, Jared Rivera, Rubaiya R Emran, William J Solorio Hernandez, Kiryang Kwon, Richard J Fletcher
https://arxiv.org/abs/2506.00177

Creation of a degenerate Bose-Bose mixture of erbium and lithium atoms
We report the realization of a degenerate mixture of $^{166}$Er and $^{7}$Li atoms in their lowest spin state. The two species are sequentially laser-cooled and loaded into an optical dipole trap, then transported to a glass cell in which further cooling to degeneracy occurs. Since Er is more weakly trapped, it serves as a coolant for Li, and we observe efficient sympathetic cooling facilitated by a large interspecies elastic scattering cross section. Three-body losses are found to be small at …

Few-body bound states of bosonic mixtures in two-dimensional optical lattices
Matias Volante-Abovich, Felipe Isaule, Luis Morales-Molina
https://arxiv.org/abs/2506.21385

Few-body bound states of bosonic mixtures in two-dimensional optical lattices
We study the formation of bound states in a binary mixture of a few bosons in square optical lattices. Using the exact diagonalization method, we find that bound clusters of all available bosons can form. We provide a comprehensive numerical examination of these bound states for a wide range of repulsive intraspecies and attractive interspecies interactions. In contrast to binary mixtures in one-dimensional chains, we reveal that the binding energy of the clusters shows a non-monotonic dependen…

Formation of ultracold $^{39}$K$^{133}$Cs Feshbach molecules
Charly Beulenkamp, Krzysztof P. Zamarski, Robert C. Bird, C. Ruth Le Sueur, Jeremy M. Hutson, Manuele Landini, Hanns-Christoph N\"agerl
https://arxiv.org/abs/2506.16520

Formation of ultracold $^{39}$K$^{133}$Cs Feshbach molecules
We report the creation of an ultracold gas of bosonic $^{39}$K$^{133}$Cs molecules. We first demonstrate a cooling strategy relying on sympathetic cooling of $^{133}$Cs to produce an ultracold mixture. From this mixture, weakly bound molecules are formed using a Feshbach resonance at 361.7 G. The molecular gas contains $7.6(10)\times 10^3$ molecules with a lifetime of about 130 ms, limited by two-body decay. We perform Feshbach spectroscopy to observe several new interspecies resonances and cha…

Tuning spin-density separation via finite-range interactions: Dimensionality-driven signatures in dynamic structure factors
Xiaoran Ye, Yi Zhang, Ziheng Zhou, Zhaoxin Liang
https://arxiv.org/abs/2506.15092

Tuning spin-density separation via finite-range interactions: Dimensionality-driven signatures in dynamic structure factors
Spin-density separation, marked by distinct propagation velocities of spin and density excitations, epitomizes strong correlations, historically confined to one-dimensional (1D) systems. Recent ultracold quantum gas experiments, however, demonstrate its emergence in higher dimensions through precise tuning of intra- to interspecies interaction ratios, inspiring exploration of how dimensionality and interatomic interactions govern quantum correlations. We investigate this in two-component bosoni…

Fragmentation of a trapped multiple-species bosonic mixture
O. E. Alon, L. S. Cederbaum
https://arxiv.org/abs/2506.12943 https://arxi…

Fragmentation of a trapped multiple-species bosonic mixture
We consider a multiple-species mixture of interacting bosons, $N_1$ bosons of mass $m_1$, $N_2$ bosons of mass $m_2$, and $N_3$ bosons of mass $m_3$ in a harmonic trap of frequency $ω$. The corresponding intraspecies interaction strengths are $λ_{11}$, $λ_{22}$, and $λ_{33}$, and the interspecies interaction strengths are $λ_{12}$, $λ_{13}$, and $λ_{23}$. When the shape of all interactions are harmonic, this is the generic multiple-species harmonic-interaction model which is exactly solv…