Thermalization dynamics of a dissipative two-level system in a Fermi bath with contact interactions

Vivanco, Franklin; Schuckert, Alexander; Schumacher, Grant; Ji, Yunpeng; Assumpção, Gabriel Almeida; Chen, Jianyi; Knap, Michael; Navon, Nir

doi:10.26226/m.6275705a66d5dcf63a3114db

Cited by 1 publication

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“…2 and 3 have pushed us towards developing a theory of polarons in charge density waves, an investigation which will be published soon. Other future efforts will be directed to computing polaron spectra in unconventional settings using the ED method, including topological baths and Rabi driven impurities [84][85][86]. In particular, the attractive polaron looks like a very stable feature, while the particle-hole continuum is strongly dependent on the details of the simulation.…”

Section: Discussionmentioning

confidence: 99%

Polaron spectroscopy of interacting Fermi systems: Insights from exact diagonalization

Amelio,

Goldman

2024

SciPost Phys.

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Immersing a mobile impurity into a many-body quantum system represents a theoretically intriguing and experimentally effective way of probing its properties. In this work, we study the polaron spectral function in various environments, within the framework of Fermi-Hubbard models. Inspired by possible realizations in cold atoms and semiconductor heterostructures, we consider different configurations for the background Fermi gas, including charge density waves, multiple Fermi seas and pair superfluids. While our calculations are performed using an exact-diagonalization approach, hence limiting our analysis to systems of few interacting Fermi particles, we identify robust spectral features supported by theoretical results. Our work provides a benchmark for computations based on mean-field approaches and reveal surprising features of polaron spectra, inspiring new theoretical investigations.

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Section: Discussionmentioning

confidence: 99%