Quivers and BPS states in 3d and 4d

This paper proposes and rigorously establishes a symmetrization relation between 4d N=2\mathcal{N}=2 BPS quivers and 3d N=2\mathcal{N}=2 symmetric quivers, demonstrating that the wall-crossing structure of 4d Argyres-Douglas theories is isomorphic to the unlinking of their 3d counterparts and that these symmetric quivers successfully capture the Schur indices of the original 4d theories.

Piotr Kucharski, Pietro Longhi, Dmitry Noshchenko + 2 more2026-03-06🔬 physics

SO(n) Affleck-Kennedy-Lieb-Tasaki states as conformal boundary states of integrable SU(n) spin chains

This paper constructs SO(n)\mathrm{SO}(n)-symmetric conformal boundary states in the SU(n)1\mathrm{SU}(n)_1 Wess-Zumino-Witten conformal field theory by embedding Spin(n)2\mathrm{Spin}(n)_2, identifies them as ground states of SO(n)\mathrm{SO}(n) Affleck-Kennedy-Lieb-Tasaki spin chains within the integrable SU(n)\mathrm{SU}(n) Uimin-Lai-Sutherland model, and analytically computes their boundary entropy using exact overlap formulas.

Yueshui Zhang, Ying-Hai Wu, Meng Cheng + 1 more2026-03-06⚛️ quant-ph

Gaussian fermionic embezzlement of entanglement

This paper demonstrates that Gaussian operations are sufficient to embezzlement arbitrary Gaussian entangled states from ground states of non-interacting critical fermions, establishing embezzlement as a generic property of fermionic Gaussian states and bridging finite-size systems with abstract von Neumann algebra classifications through novel distance bounds.

Alessia Kera, Lauritz van Luijk, Alexander Stottmeister, Henrik Wilming2026-03-06⚛️ quant-ph

Quantum two-dimensional superintegrable systems in flat space: exact-solvability, hidden algebra, polynomial algebra of integrals

This review paper demonstrates that six specific two-dimensional quantum superintegrable systems in flat space are exactly solvable and share a common hidden Lie algebraic structure, characterized by polynomial eigenfunctions, infinite flags of invariant subspaces, and finite-order polynomial algebras of integrals.

Alexander V Turbiner, Juan Carlos Lopez Vieyra, Pavel Winternitz2026-03-06⚛️ quant-ph

A structure-preserving discretisation of SO(3)-rotation fields for finite Cosserat micropolar elasticity

This paper introduces a novel Geometric Structure-Preserving Interpolation (Γ\Gamma-SPIN) method that utilizes geodesic elements and a projection-based relaxation of rotation-deformation coupling to achieve stable, locking-free finite-strain Cosserat micropolar elasticity simulations, particularly in the asymptotic couple-stress limit.

Lucca Schek, Peter Lewintan, Wolfgang Müller + 5 more2026-03-06🔬 physics

Comparison of Structure-Preserving Methods for the Cahn-Hilliard-Navier-Stokes Equations

This paper introduces and validates two new structure-preserving discontinuous Galerkin methods, SWIPD-L and SIPGD-L, for the Cahn-Hilliard-Navier-Stokes equations with degenerate mobility, demonstrating that they achieve optimal convergence, preserve key physical properties like mass conservation and energy dissipation, and offer significant computational savings on adaptive meshes compared to existing approaches.

Jimmy Kornelije Gunnarsson, Robert Klöfkorn2026-03-06🔬 physics