2020
DOI: 10.48550/arxiv.2010.11471
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Exploration of interlacing and avoided crossings in a manifold of potential energy curves by a Unitary Group Adapted State Specific Multi-Reference Perturbation Theory (UGA-SSMRPT)

Dibyajyoti Chakravarti,
Koustav Hazra,
Riya Kayal
et al.

Abstract: The Unitary Group adapted State-Specific Multi-Reference Perturbation Theory (UGA-SSMRPT) developed by Mukherjee et al has successfully realized the goal of studying bond dissociation in a numerically stable, spin-preserving and size-consistent manner.The theory belongs to a suite of Unitary Group Adapted SS-MR theories developed by the group, starting with coupled cluster (CC) and then it's second order PT (UGA-SSMRPT2) which possesses all of the desirable features of generating a manifold of PES of same or d… Show more

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