Finite-temperature dynamical properties of SU(N) fermionic Hubbard models in the spin-incoherent regime

Tokuno, Akiyuki; Giamarchi, Thierry

doi:10.1103/PhysRevA.86.053614

Scientific article

English

Finite-temperature dynamical properties of SU(N) fermionic Hubbard models in the spin-incoherent regime

Contributors

Tokuno, Akiyuki; Giamarchi, Thierry

Published in

Physical review, A, Atomic, molecular, and optical physics, vol. 86, no. 5

Publication date

2012

Abstract

We study strongly correlated Hubbard systems extended to symmetric N-component fermions. We focus on the intermediate-temperature regime between magnetic superexchange and interaction energy, which is relevant to current ultracold fermionic atom experiments. The N-component fermions are represented by slave particles, and, by using a diagrammatic technique based on the atomic limit, spectral functions are analytically obtained as a function of temperature, filling factor, and the component number N. We also apply this analytical technique to the calculation of lattice modulation experiments. We compute the production rate of double occupancy induced by modulation of an optical lattice potential. Furthermore, we extend the analysis to take into account the trapping potential by use of the local density approximation. We find an excellent agreement with recent experiments on 173Yb atoms

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

UNIGE research groups

Groupe Giamarchi

Citation (ISO format)

TOKUNO, Akiyuki, GIAMARCHI, Thierry. Finite-temperature dynamical properties of SU(N) fermionic Hubbard models in the spin-incoherent regime. In: Physical review, A, Atomic, molecular, and optical physics, 2012, vol. 86, n° 5. doi: 10.1103/PhysRevA.86.053614

Article (Published version)

Identifiers

PID : unige:35907
DOI : 10.1103/PhysRevA.86.053614

Journal ISSN

1050-2947

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22/04/2014 12:42:00

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22/04/2014 12:42:00

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14/03/2023 21:08:57

Status update

14/03/2023 21:08:57

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30/10/2024 16:57:02

Finite-temperature dynamical properties of SU(N) fermionic Hubbard models in the spin-incoherent regime

Contributors

Published in

Publication date

Abstract

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

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Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation