Topological Defect Engineering and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="script">P</mml:mi><mml:mi mathvariant="script">T</mml:mi></mml:mrow></mml:math> Symmetry in Non-Hermitian Electrical Circuits

We employ electric circuit networks to study topological states of matter in non-Hermitian systems enriched by parity-time symmetry $\mathcal{PT}$ and chiral anti-$\mathcal{PT}$ ($\mathcal{APT}$). The structure manifests itself the complex admittance bands which yields excellent measurability signal noise ratio. analyze impact symmetric gain loss on localized edge defect a Su--Schrieffer--Heeger (SSH) circuit. realize all three phases system, including $\mathcal{APT}$ regime that occurs at large loss. measure spectrum eigenstates for arbitrary boundary conditions, allows us resolve not only states, but also novel $\mathbb{Z}_2$ invariant bulk. discover distinct properties phase diagram. In is symmetric, state disappears reemerges when reached, while always prevail experience shift eigenvalue. Our findings unveil future route engineering tuning dimension.