Antiferromagnetic behavior in self-bound one-dimensional composite bosons
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866910283741528064 |
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| author | Gordillo, M. C. |
| author_facet | Gordillo, M. C. |
| contents | The structure of self-bound one-dimensional droplets containing a mixture of Ytterbium fermionic isotopes ($^{173}$Yb, $^{171}$Yb) is calculated by means of a diffusion Monte Carlo technique. We considered only balanced setups in which all the atoms of one isotope are spin-polarized, while the atoms of the other can have up to three different spin values, that difference being a necessary requirement to achieve stable systems. Our results indicate that these droplets consist of consecutive "molecules" made up of one $^{173}$Yb and one $^{171}$Yb atom. In other words, we have up to three different kinds of composite bosons, corresponding to the number of spin components in the non-polarized isotope. The fermionic nature of those Yb atoms makes pairs with identical spin composition avoid each other, creating a Pauli-like-hole filed by another molecule in which at least one of the Yb atoms has a different spin from that of their closest neighbors. This effective repulsion is akin to an antiferromagnetic short-range interaction between different kinds of composite bosons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_17654 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Antiferromagnetic behavior in self-bound one-dimensional composite bosons Gordillo, M. C. Quantum Gases The structure of self-bound one-dimensional droplets containing a mixture of Ytterbium fermionic isotopes ($^{173}$Yb, $^{171}$Yb) is calculated by means of a diffusion Monte Carlo technique. We considered only balanced setups in which all the atoms of one isotope are spin-polarized, while the atoms of the other can have up to three different spin values, that difference being a necessary requirement to achieve stable systems. Our results indicate that these droplets consist of consecutive "molecules" made up of one $^{173}$Yb and one $^{171}$Yb atom. In other words, we have up to three different kinds of composite bosons, corresponding to the number of spin components in the non-polarized isotope. The fermionic nature of those Yb atoms makes pairs with identical spin composition avoid each other, creating a Pauli-like-hole filed by another molecule in which at least one of the Yb atoms has a different spin from that of their closest neighbors. This effective repulsion is akin to an antiferromagnetic short-range interaction between different kinds of composite bosons. |
| title | Antiferromagnetic behavior in self-bound one-dimensional composite bosons |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2312.17654 |