Sascha Gehrmann

activity

20212026

most citedFinite size spectrum of the staggered six-vertex model with

U_{q} (sl (2))

-invariant boundary conditions

13 citations · 31 across the 10 of their papers we have counts for

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3 papers · 1 filter

cond-mat.stat-mech2025

XYZ integrability the easy way

Paul Fendley, Sascha Gehrmann, Eric Vernier +1

Sutherland showed that the XYZ quantum spin-chain Hamiltonian commutes with the eight-vertex model transfer matrix, so that Baxter's subsequent tour de force proves the integrabili…

cond-mat.stat-mech2025★ 1 cited

Exact strong zero modes in quantum circuits and spin chains with non-diagonal boundary conditions

Sascha Gehrmann, Fabian H. L. Essler

We construct exact strong zero mode operators (ESZM) in integrable quantum circuits and the spin-1/2 XXZ chain for general open boundary conditions, which break the bulk U(1) symme…

hep-th2025

Quantum-group-invariant $D_{n + 1}^{(2)}$ models: Bethe ansatz and finite-size spectrum

Holger Frahm, Sascha Gehrmann, Rafael I. Nepomechie +1

We consider the quantum integrable spin chain models associated with the Jimbo R-matrix based on the quantum affine algebra $D_{n + 1}^{(2)}$ , subject to quantum-group-invariant boun…

XYZ integrability the easy way

Exact strong zero modes in quantum circuits and spin chains with non-diagonal boundary conditions

Quantum-group-invariant Dn+1(2)​ models: Bethe ansatz and finite-size spectrum

Quantum-group-invariant $D_{n + 1}^{(2)}$ models: Bethe ansatz and finite-size spectrum