Phys. Rev. Lett. 84, 1655 - 1658 (2000)Production of Spin 3/2 Particles from Vacuum Fluctuations |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
Antonio L. Maroto
Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
Anupam Mazumdar
Astrophysics Group, Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom
Received 9 April 1999
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 straightforward 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
URL: http://link.aps.org/abstract/PRL/v84/p1655
DOI: 10.1103/PhysRevLett.84.1655
PACS: 98.80.Cq, 04.62.+v, 04.65.+e
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