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cond-mat.quant-gas2025
Unified theory of attractive and repulsive polarons in one-dimensional Bose gas
Nikolay Yegovtsev, T. Alper Yoğurt, Matthew T. Eiles +1
We present a unified description of attractive and repulsive polarons, formed in a one-dimensional Bose gas hosting an impurity particle, by obtaining all ground and excited state…
cond-mat.supr-con2025
Nontrivial saddle points for spectral form factors of flat band superconductors
Sankalp Gaur, Emil A. Yuzbashyan, Victor Gurarie
We derive the spectral form factor of a flat band superconductor in two different ways. In the first approach, we diagonalize the Hamiltonian of this system exactly and numerically…