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Strings in gravitational shock wave backgrounds

✍ Scribed by M.E.V Costa; H.J de Vega

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
513 KB
Volume
211
Category
Article
ISSN
0003-4916

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πŸ“œ SIMILAR VOLUMES

Quantum string scattering by gravitation
Quantum string scattering by gravitational shock waves
✍ M.E.V Costa; H.J de Vega πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 593 KB

The two-point amplitude, AZ(kZ. k,), describing the scattering of the lowest string excitation (the tachyon) by a gravitational shock wave (GSW) is computed. For this purpose, we use the appropriate vertex operator in the GSW background. We explicitly evaluate Az(kz, k,) for large impact parameter

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String cosmology models predict a cosmic background of gravitational waves produced during a period of dilatondriven inflation. I describe the background, present astrophysical and cosmological bounds on it, and discuss in some detail how it may be possible to detect it with large operating and plan