Seminario di Fisica Matematica

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Seminario di Fisica Matematica
Lunedì 6 Maggio 2024 alle ore 14:00, Zhituo Wang (Harbin Institute of Technology) terrà il seminario di Fisica Matematica dal titolo "Constructive renormalizations of the 2-D Honeycomb-Hubbard model".

Abstract:
In this talk I will present some recent progress on the construction of ground state of the two-dimensional Hubbard model, which is a prototypical model for studying phase transitions in quantum many-body systems. Using fermionic cluster expansions and constructive renormalization theory, we proved that the ground state of the 2-d Hubbard model on the honeycomb lattice with triangular Fermi surfaces is not a Fermi liquid in a mathematical precise sense (Salmhofer criterium). I will also discuss the crossover phenomenon in the 2D square lattice Hubbard model and universality. This presentation is based on the work CMP 401, 2569–2642(2023) and arXiv:2303.13628.

Il seminario si svolgerà in presenza presso il Dipartimento di Matematica e Fisica - Lungotevere Dante ,376 -  Aula M6. 

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