1997/05/08 by C. Puntmann, Puntmann, C., P. Patuleanu +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.quant-ph/9705012
4 pages, no figures, uses group21.sty (included); to appear in GROUP21 proceedings vol. 1, H.-D. Doebner et al., eds., World Scientific, Singapore
arxiv created 1997/05/08 · arxiv updated 2009/12/01
In analogy to Gamow vectors describing resonance states from first order S-matrix poles, one can define Gamow vectors from higher order poles of the S-matrix. With these vectors we are going to discuss a density operator that describes exponentially decaying resonances from higher order poles.