Production of spin 3/2 particles from vacuum fluctuations

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Mazumdar, Anupam
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American Physical Society
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We study the production of spin 3/2 particles in homogeneous scalar and gravitational backgrounds using the mode-mixing Bogolyubov method. Considering only the helicity +/-3/2 states, we can reduce the problem to a standard Dirac fermion calculation and apply the standard techniques in a straight forward way. As an example we consider a specific supergravity inflationary model and calculate the spectrum of gravitinos created during preheating at the end of inflation.
© 2000 The American Physical Society. A. L. M. acknowledges support from the SEUID-Royal Society and (CICYT-AEN97-1693) (Spain). A. M. is supported by INLAKS and ORS. We thank Andrew Liddle for valuable discussions.
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