activity
20192026
most citedSpectral Properties of the Dirac Operator coupled with -Shell Interactions

17 citations · 40 across the 9 of their papers we have counts for

collaborators

10 papers

math.AP2026

MIT bag model and infinite mass limit in non-smooth domains

Badreddine Benhellal, Noah Körner, Dylan Machado +1

The work is devoted to the study of Dirac operators with MIT bag boundary conditions in Euclidean domains with compact Lipschitz boundaries in arbitrary dimensions. It is shown tha…

math-ph2026

The Landau-Dirac operator with shell interactions: self-adjointness and clustering

Badreddine Benhellal, Vincent Bruneau, Pablo Miranda

We consider the two-dimensional Dirac operator with constant magnetic field that is perturbed by a combination of electrostatic and Lorentz-scalar delta interactions with variable…

math.SP2025

Eigenvalue asymptotics for strong -interactions supported on curves with corners

Badreddine Benhellal, Noah Körner, Konstantin Pankrashkin

Let be a piecewise smooth closed curve with corners. We discuss the asymptotic behavior of the individual eigenvalues of the two-dimensional Schrödinger oper…

math.AP2024

On Schrödinger operators with oblique transmission conditions on non-smooth curves

Badreddine Benhellal, Miguel Camarasa, Konstantin Pankrashkin

In a recent paper Behrndt, Holzmann, and Stenzel introduced a new class of two-dimensional Schrödinger operators with oblique transmissions along smooth curves. We extend most comp…

math.SP2023

On Neumann-Poincaré operators and self-adjoint transmission problems

Badreddine Benhellal, Konstantin Pankrashkin

We discuss the self-adjointness in -setting of the operators acting as , with piecewise constant functions having a jump along a Lipschitz hypersurfa…

math.SP2022★ 5 cited

Curvature contribution to the essential spectrum of Dirac operators with critical shell interactions

Badreddine Benhellal, Konstantin Pankrashkin

We discuss the spectral properties of three-dimensional Dirac operators with critical combinations of electrostatic and Lorentz scalar shell interactions supported by a compact smo…

math.AP2022★ 1 cited

A Poincaré-Steklov map for the MIT bag model

Badreddine Benhellal, Vincent Bruneau, Mahdi Zreik

The purpose of this paper is to introduce and study Poincaré-Steklov (PS) operators associated to the Dirac operator with the so-called MIT bag boundary condition. In a domai…

math.SP2021★ 15 cited

Spectral Analysis of Dirac Operators with delta interactions supported on the boundaries of rough domains

Badreddine Benhellal

Given an open set . We deal with the spectral study of Dirac operators of the form , where is the free Dirac operator in $…

math.SP2021★ 17 cited

Spectral Properties of the Dirac Operator coupled with -Shell Interactions

Badreddine Benhellal

Let be an open set, we study the spectral properties of the free Dirac operator coupled with the singular potential $V_κ=(εI_4 +μβ+η(α\cdot N))…

math.SP2019★ 2 cited

Spectral Asymptotic for the Infinite Mass Dirac Operator in bounded domain

Badreddine Benhellal

In this paper, we study a singular perturbation of a problem used in dimension two to model graphene or in dimension three to describe the quark confinement phenomenon in hadrons.…