Thermal disruption of a Luttinger liquid
arXiv:2210.06306 · doi:10.1038/s41467-023-38767-0
Abstract
The Tomonaga-Luttinger liquid (TLL) theory describes the low-energy excitations of strongly correlated one-dimensional (1D) fermions. In the past years, a number of studies have provided a detailed understanding of this universality class. More recently, theoretical investigations that go beyond the standard low-temperature, linear-response, TLL regime have been developed. While these provide a basis for understanding the dynamics of the spin-incoherent Luttinger liquid, there are few experimental investigations in this regime. Here we report the observation of a thermally-induced, spin-incoherent Luttinger liquid in a Li atomic Fermi gas confined to 1D. We use Bragg spectroscopy to measure the suppression of spin-charge separation and the decay of correlations as the temperature is increased. Our results probe the crossover between the coherent and incoherent regimes of the Luttinger liquid, and elucidate the roles of the charge and the spin degrees of freedom in this regime.
8 pages, 5 main figures
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Cited by in corpus (8)
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- Platforms for the realization and characterization of Tomonaga-Luttinger liquids
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- Tomonaga-Luttinger Liquid Behavior in a Rydberg-encoded Spin Chain
- Exact spectral function and nonequilibrium dynamics of the strongly interacting Hubbard model
- Non-local origin and correlations in the Johnson noise at nonuniform temperatures
- Numerical methods and analytic results for one-dimensional strongly interacting spinor gases