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    • Treatment of Be+ (1s− 1)2S Auger resonance with different decouplings of the dilated electron propagator

      Milan N Medikeri Manoj K Mishra

      Volume 106 Issue 2 April 1994 pp 111-121

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/106/02/0111-0121

    • Keywords

       

      Auger resonance; dilated electron propagator; decoupling

    • Abstract

       

      The diagonal 2ph-TDA and quasiparticle decouplings of the dilated electron propagator (based on an underlying bi-variational SCF) are utilized to calculate energy and width of the Be+(1s−1)2S Auger resonance for the first time. Comparison with experimental and other theoretical results reveals that the renormalized infinite order diagonal 2ph-TDA decoupling seems to offer a less balanced approach to the treatment of resonances than the second-order decoupling. The diagonal quasiparticle approximation to the self energy is seen to offer an effective and economic alternative to the non-diagonal propagator calculations.

    • Author Affiliations

       

      Milan N Medikeri1 Manoj K Mishra1

      1. Department of Chemistry, Indian Institute of Technology, Powai, Bombay - 400 076, India

    • Dates

       
      Published
      April 1994

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