Low-Temperature Phases in Two-Orbital Hubbard Model Realized with Ultracold Atoms in Optical Lattices

Sotnikov, Andrii; Zambrano, Y.; Cichy, Agnieszka

doi:10.12693/aphyspola.138.669

Cited by 2 publications

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“…In particular, for a gas of 173 Yb atoms we observe a hierarchy of the interaction amplitudes similar to the one employed in recent theoretical studies with dynamical mean-field theory (DMFT) for a quasi-two-dimensional and three-dimensional geometries of SDL [19,41]. There, the authors pointed out a peculiar antiferrorbital (AFO) ordering instability in this system (also called as orbital density wave, see, e.g., Refs.…”

Section: Resultssupporting

confidence: 73%

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

Bilokon¹,

Bilokon²,

Bañuls³

et al. 2023

Preprint

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We explore the rich nature of correlations in the ground state of ultracold atoms trapped in state-dependent optical lattices. In particular, we consider interacting fermionic ytterbium or strontium atoms, realizing a twoorbital Hubbard model with two spin components. We analyze the model in one-dimensional setting with the experimentally relevant hierarchy of tunneling and interaction amplitudes by means of exact diagonalization and matrix product states approaches, and study the correlation functions in density, spin, and orbital sectors as functions of variable densities of atoms in the ground and metastable excited states. We show that in certain ranges of densities these atomic systems demonstrate strong density-wave, ferro-and antiferromagnetic, as well as antiferroorbital correlations.

show abstract

Section: Resultssupporting

confidence: 73%

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

Bilokon¹,

Bilokon²,

Bañuls³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Being a sum of local terms of the range up to four consecutive spin sites, the Hamiltonian ( 7 ) can be written as a matrix product operator (MPO) 42 , and treated with standard MPS numerical algorithms 43 , 44 . The latter proceed by treating Eq.…”

Section: System Model and Methodsmentioning

confidence: 99%

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

Bilokon

Bañuls

et al. 2023

Sci Rep

View full text Add to dashboard Cite

We explore the rich nature of correlations in the ground state of ultracold atoms trapped in state-dependent optical lattices. In particular, we consider interacting fermionic ytterbium or strontium atoms, realizing a two-orbital Hubbard model with two spin components. We analyze the model in one-dimensional setting with the experimentally relevant hierarchy of tunneling and interaction amplitudes by means of exact diagonalization and matrix product states approaches, and study the correlation functions in density, spin, and orbital sectors as functions of variable densities of atoms in the ground and metastable excited states. We show that in certain ranges of densities these atomic systems demonstrate strong density-wave, ferro- and antiferromagnetic, as well as antiferroorbital correlations.

show abstract

Low-Temperature Phases in Two-Orbital Hubbard Model Realized with Ultracold Atoms in Optical Lattices

Cited by 2 publications

References 0 publications

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

Many-body correlations in one-dimensional optical lattices with alkaline-earth(-like) atoms

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