<h3>Title</h3>
<h3><span style="font-size: 12.16px;">Dressed Coupled Cluster Theory For Non-Covalent Interactions</span></h3>
<p><strong><span style="font-size: 12.16px;"><span style="text-decoration: underline;">Abstract</span> :</span></strong></p>
<p><span style="font-size: 10.0pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-US">Non-covalent forces are ubiquitous in nature. The existing ab-initio theories often require large basis set and high computational scaling to account for the same in a qualitatively correct manner. This often restricts the applicability of these methods to small sized systems. In order to circumvent this problem, I shall propose a dual exponential Ansatz based recursive similarity transformed Coupled Cluster methodology, which accurately captures non-covalent interactions in an affordable manner. The superior accuracy of the proposed method is ensured by the inclusion of high rank correlation effects and a balanced treatment of screened Coulomb interactions. Our method strikes the right balance between computational cost and accuracy, and thus promises to be a black-box electronic structure tool in near future. We shall demonstrate the efficacy of the formulation with a number of numerical examples on difficult systems with arbitrarily complex electronic configurations. Further, I shall show a road-map within the framework of our theory to handle strongly correlated molecular systems.</span></p>