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Production of spin 3/2 particles from vacuum fluctuations

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>21/02/2000
<mark>Journal</mark>Physical Review Letters
Issue number8
Volume84
Number of pages4
Pages (from-to)1655-1658
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

We study the production of spin 3/2 particles in homogeneous scalar and gravitational backgrounds from the mode-mixing Bogolyubov method. Considering only helicity $\pm 3/2$ states we can reduce the problem to a standard Dirac fermion calculation and apply the standard techniques in a straightforward way. As an example we consider a supergravity inflationary model and calculate the spectrum of gravitinos created during preheating at the end of inflation.

Bibliographic note

© 2000 The American Physical Society

4 pages, RevTeX, 1 figure. New comments and references added. Final version to appear in Phys.Rev.Lett