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cond-mat.str-el2026
Localization pattern of a mobile impurity in the disordered Kitaev chain
A. V. Sadovnikov, A. N. Rubtsov
We study a mobile impurity coupled to a Kitaev chain with chemical-potential disorder and ask whether the impurity behavior distinguishes different regimes of the host system. Exac…
cond-mat.str-el2026
Quantized Collective Fluctuations in Correlated Fermion Systems
S. S. Onuchin, Ya. S. Lyakhova, L. D. Silakov +1
Collective excitations in fermionic systems play a crucial role in determining their physical properties. An important challenge is to develop efficient theoretical approaches for…
cond-mat.str-el2025
Mean Field Decoupling of Single Impurity Anderson Model through Auxiliary Majorana Fermions
Irakli Titvinidze, Julian Stobbe, Alexey N. Rubtsov +1
We present a method to study the time evolution of the single impurity Anderson model which exploits a mean field decoupling of the interacting impurity and the non-interacting bat…