2 papers
math-ph2026
Timescale for macroscopic equilibration in isolated quantum systems: a rigorous derivation for free fermions
Takashi Hara, Tatsuhiko Koike
For a class of translation-invariant free-fermion systems (including those with uniform nearest neighbor hopping) on a -dimensional hypercubic lattice…
math.NT2026
Symmetric multiple Eisenstein series
Takashi Hara, Kenji Sakugawa, Koji Tasaka
In this paper, we introduce the symmetric multiple Eisenstein series, a variant of the multiple Eisenstein series. As a fundamental result, we show that they satisfy the linear shu…