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cond-mat.str-el2026
Quantum-Geometric Amplification of Nonperturbative Interaction Scales
Stefano Bilamour, René Meyer, Johanna Erdmenger +1
Weak interactions at a two-dimensional quadratic band touching (QBT) can generate an exponentially small symmetry-breaking gap, , that cannot be captured by every…
cond-mat.str-el2026
Analytic continuation of Green's functions with a neural network
Fakher Assaad, Johanna Erdmenger, Anika Götz +3
An important problem in many-body physics is to reconstruct the spectral density from the imaginary-time domain Green's function. Typically, the imaginary-time Green's function is…