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arXiv · 2509.24439

Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis

Ruslan Mushkaev·Francesco Petocchi·Shintaro Hoshino·Philipp Werner
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Abstract

The Hubbard model is known to accommodate various electronic orders, including stripes, which are important for understanding the physics of cuprates. We study spin-stripe order in the square lattice Hubbard model as a function of doping and temperature, by solving the Bethe-Salpeter equation with the local vertex from dynamical mean field theory (DMFT), both inside and outside the antiferromagnetic phase. We find broad regions of horizontal/vertical spin stripes at low temperatures for the model with and without next-nearest neighbor hopping. Their wavelength depends on hole doping in a nonlinear fashion, and is highly sensitive to the ratio of nearest and next-nearest neighbor hoppings.

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Ruslan Mushkaev, Francesco Petocchi, Shintaro Hoshino, Philipp Werner. 2025-09-29. Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis. https://doi.org/10.1103/pqgq-qf7j

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