Renormalization Group Approach for Modified vdP Oscillator with $\mathcal{P}\mathcal{T}$ Symmetric Non-Hermitian Interaction

Biswajit Bhowmick, Rohit Mahendra Shinde, Bhabani Prasad Mandal

We consider a modified version of the well-known 2d vdP oscillator with a new non-Hermitian interaction. The usual perturbative approach fails to provide the classical dynamics of…