Automated symmetry adaption in nuclear many-body theory (Vol. 52, No. 1)
The extreme cost of solving the A-nucleon Schrödinger equation can be minimised by leveraging rotational symmetry and, thus, enable the computation of observables in heavy nuclei and/or with high precision.
The associated reduction process, which amounts to re-expressing the working equations in terms of rotationally-invariant objects, requires lengthy symbolic manipulations of elaborate algebraic identities.
For the first time, this involved process is automated by a powerful graph-theory-based tool, the AMC code, which condenses months of error-prone derivations into a simple computational task performed within seconds.
The AMC program tightens the gap for a full automation of the many-body workflow, thereby lowering the time required to build and test novel quantum many-body formalisms.
A. Tichai, R. Wirth, J. Ripoche and T. Duguet, Symmetry reduction of tensor networks in manybody theory, Eur. Phys. J. A 56, 272 (2020)