3 papers
physics.chem-ph2026
Algebraic Geometry for Spin-Adapted Coupled Cluster Theory
Fabian M. Faulstich, Svala Sverrisdóttir
We develop and numerically analyze an algebraic-geometric framework for spin-adapted coupled-cluster (CC) theory. Since the electronic Hamiltonian is SU(2)-invariant, physically re…
math.CO2026
Plane partitions and spin adapted quantum states
Abigail Price, Ada Stelzer, Svala Sverrisdóttir
We describe an explicit basis for the -invariant space of the exterior power via the combinatorics of plane partitions. In quant…
math.AG2025
Algebraic Varieties in Second Quantization
Svala Sverrisdóttir
We develop an algebraic geometric framework for Fock space coupled cluster theory in second quantization. In quantum chemistry, many-electron states are represented as elements of…