RT Journal Article T1 Production of spin 3/2 particles from vacuum fluctuations A1 López Maroto, Antonio A1 Mazumdar, Anupam AB 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. PB American Physical Society SN 0031-9007 YR 2000 FD 2000-02-21 LK https://hdl.handle.net/20.500.14352/59334 UL https://hdl.handle.net/20.500.14352/59334 LA eng NO © 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. NO SEUID-Royal Society NO CICYT (Spain) DS Docta Complutense RD 6 abr 2025