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cond-mat.quant-gas2026
Mass-gap functional determinant approach for mobile Fermi polarons
Emilio Ramos Rodríguez, Eugen Dizer, Xin Chen +1
We extend the functional determinant approach (FDA), previously restricted to static impurities, to the case of finite-mass impurities by using the mass-gap description of Fermi po…
cond-mat.quant-gas2025★ 4 cited
Mass-gap description of heavy impurities in Fermi gases
Xin Chen, Eugen Dizer, Emilio Ramos Rodríguez +1
We present a unified theory that connects the quasiparticle picture of Fermi polarons for mobile impurities to the Anderson orthogonality catastrophe for static impurities. By oper…