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astro-ph.SR2023
The Exceptional Ring of buoyancy instability in stars
Armand Leclerc, Lucien Jezequel, Nicolas Perez +3
We reveal properties of global modes of linear buoyancy instability in stars, characterised by the celebrated Schwarzschild criterion, using non-Hermitian topology. We identify a r…
cond-mat.mes-hall2023★ 8 cited
Mode-Shell correspondence, a unifying phase space theory in topological physics -- Part I: Chiral number of zero-modes
Lucien Jezequel, Pierre Delplace
We propose a theory, that we call the \textit{mode-shell correspondence}, which relates the topological zero-modes localised in phase space to a \textit{shell} invariant defined on…