2026-06-27T12:24:04Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/72912024-07-16T14:17:34Zcom_20.500.14352_14col_20.500.14352_15

Campoamor Stursberg, Otto-Rudwig 2023-06-17T08:29:50Z 2023-06-17T08:29:50Z 2020-04-27 0022-2488 10.1063/1.5141091 https://hdl.handle.net/20.500.14352/7291 https://doi.org/10.1063/1.5141091 Using the contraction of the centrally extended Schrödinger algebrâS(N) onto the Lie algebra S(N) ⊕ R in combination with the Newton identities associated with the characteristic polynomial of a matrix, we derive explicit expressions for the Casimir operators of the unextended Schrödinger algebra S(N) in terms of trace operators. It is shown that these operators can be defined independently of the contraction from which a direct method for the computation of the S(N)-invariants is deduced. eng open access Trace formulas for the Casimir operators of the unextended Schrödinger algebra S(N) journal article