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cond-mat.str-el2025
Polaron formation as the vertex function problem: From Dyck's paths to self-energy Feynman diagrams
Tomislav Miškić, Juraj Krsnik, Stefano Ragni +2
We present an iterative method for generating the complete set of self-energy Feynman diagrams at arbitrary order for the single-polaron problem with arbitrary linear coupling to t…
cond-mat.str-el2025★ 3 cited
Entanglement in the pseudogap regime of cuprate superconductors
Frederic Bippus, Juraj Krsnik, Motoharu Kitatani +4
We find a strongly enhanced entanglement within the pseudogap regime of the Hubbard model. This entanglement is estimated from the quantum Fisher information and, avoiding the ill-…