Aleksandrs Sokolovs

collaborators

3 papers

cond-mat.stat-mech2026

Parity superselection obstructs monogamy of mutual information in free fermions

Aleksandrs Sokolovs

We prove that free fermions in the spin (tensor product) factorization violate monogamy of mutual information: $I_{3}^{spin} > 0$ for adjacent strips of width $w \leq 6$ at a…

cond-mat.stat-mech2026

Rényi exponent landscape of multipartite entanglement in free-fermion systems

Aleksandrs Sokolovs

We show that the Rényi tripartite information $I_{3}^{(α)}$ of free fermions exhibits a qualitatively $α$ -dependent scaling at small Fermi momentum, in sharp contrast to bipartite en…

cond-mat.stat-mech2026

Tripartite information of free fermions: a universal entanglement coefficient from the sine kernel

Aleksandrs Sokolovs

We study the tripartite information I_3 of free fermions on two-dimensional lattices partitioned into three adjacent strips of width w. Translation invariance yields the exact deco…