Examines self-adjointness of Dirac operator in non-smooth convex domains, suggesting wider applicability.
The Dirac operator with MIT bag boundary condition in a bounded convex domain is shown to be always self-adjoint in the H¹ -setting. This allows one to show that such operators appear as limits of Dirac operators with large positive mass outside the domain. Similar results were previously known for smooth domains only.
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Konstantin Pankrashkin (2026) studied this question.
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