Effective Field calculations of the Energy Spectrum of the $\mathcal{P}\mathcal{T}$-Symmetric ($-x^4$) Potential

Abouzeid M. Shalaby

In this work, we show that the traditional effective field approach can be applied to the $\mathcal{P}\mathcal{T}$-symmetric wrong sign ($-x^4$) quartic potential. The importance of this w…