Abstract
We calculate the vacuum expectation value of the stress-energy tensor for a scalar particle in the background metric of different types of spherical impulsive, spherical shock and plane impulsive gravitational waves. We get non-zero vaccum fluctuations only if we use the spherical impulsive wave as the background. We take a detour in de Sitter space for regularizing our result both in the ultraviolet and the infrared regions.
| Original language | English |
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| Pages (from-to) | 1029-1048 |
| Number of pages | 20 |
| Journal | Indian Journal of Pure and Applied Mathematics |
| Volume | 29 |
| Issue number | 10 |
| Publication status | Published - Oct 1998 |