2 papers
math.PR2023
Norm Convergence Rate for Multivariate Quadratic Polynomials of Wigner Matrices
Jacob Fronk, Torben Krüger, Yuriy Nemish
We study Hermitian non-commutative quadratic polynomials of multiple independent Wigner matrices. We prove that, with the exception of some specific reducible cases, the limiting s…
math-ph2020
Localised pair formation in bosonic flat-band Hubbard models
Jacob Fronk, Andreas Mielke
Using a generalised version of Gershgorin's circle theorem, rigorous boundaries on the energies of the lowest states of a broad class of line graphs above a critical filling are de…