Author

D. Di Sante

2 papers indexed here

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Preprint Sep 2026

Experimental realization of the minimal two-dimensional multi-orbital kagome model

Kagome materials have emerged as a major platform for correlated and topological quantum matter, hosting flat bands, Dirac dispersions and van Hove singularities rooted in frustrated lattice geometry. While their essential physics is epitomized by the canonical single-orbital kagome model, real kagome materials are int...

Bing Liu, Arka Bandyopadhyay, Manish K. Verma et al. · 0 citations

Preprint Sep 2026

Quantum-Geometric Amplification of Nonperturbative Interaction Scales

Weak interactions at a two-dimensional quadratic band touching (QBT) can generate an exponentially small symmetry-breaking gap, $m\sim e^{-A/V_1}$, that cannot be captured by every finite order of perturbation theory. We show that the singular quantum geometry of the gapped QBT converts this beyond-all-orders scale int...

Stefano Bilamour, René Meyer, Johanna Erdmenger et al. · 0 citations