5 papers

cond-mat.mes-hall2026

Quantum theory for edge current and noise in two-dimensional topological superconductors

S. Pintus, A. Crépieux

We calculate the edge current and its fluctuations, i.e. noise, in a two-dimensional topological superconductor using the T-matrix and the Green function techniques. We show that t…

hep-ph2026

Probing the Phenomenology of Dark Matter from Decoupled Freeze-Out

Geneviève Bélanger, Aoife Bharucha, Sreemanti Chakraborti +2

We consider a model of dark matter where the mediator corresponds to a superposition of a scalar and pseudoscalar, and the scenario where, after reheating, the number densities of…

math.CA2026

Lower bounds in -rational approximation to Blaschke products

Laurent Baratchart, Alexander Borichev, Sylvain Chevillard +2

We derive lower bounds in best rational approximation of given degree to finite Blaschke products, in the Hardy space of the unit disk. We first consider approximation to $z^…

cond-mat.mtrl-sci2026

Magnetic-field-induced magnon portfolio in a van der Waals magnet

T. Riccardi, F. Le Mardélé, L. A. Veyrat de Lachenal +12

Magnonic excitations are investigated in chromium oxychloride (CrOCl), a van der Waal (vdW) antiferromagnet prone to a multitude of magnetic phase transitions, with absorption expe…

math.CA2026

Asymptotic sharpness of a Nikolskii type inequality for rational functions in the Wiener algebra

Benjamin Auxemery, Alexander Borichev, Rachid Zarouf

We establish the asymptotic sharpness of a Nikolskii type inequality proved by A. Baranov and R. Zarouf for rational functions in the Wiener algebra of absolutely convergent Fo…