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Nuovo cimento della Società italiana di fisica. A, Nuclei, particles and fields

Fermi-Bose similarity, supersymmetry and generalized numbers

Yoshio Ohnuki, S. Kamefuchi

Published Oct 1, 1984• 4 citations
Publisher
DOI
10.1007/bf02902602

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In the presence of nonrelativistic supersymmetry, a sharp fermionic collective mode similar to the Goldstino mode in high-energy physics was proposed to be realized in Bose-Fermi mixtures. The Goldstino mode is relaxed (i.e., decays) if supersymmetry is explicitly broken, which can be revealed as the broadening of the corresponding spectral function. We find that the situation shares many similarities with the electron-spin resonance in magnetic systems and adopt the well-known Kubo-Tomita theory to perform a general analysis of the spectral-function line-shape broadening of the Goldstino mode.