Tahun Terbit

2010

ISBN/ISSN

978-981-4281-54-6

Deskripsi Fisik

xii, 368p. ; ill : 26 cm

No. Panggil

657 PEN

We consider the possibility of enhancing the inflationary tensor mode by introducing a spectator scalar field with a small sound speed which induces gravitational waves as a second-order effect.We analytically obtain the power spectra of gravitational waves and curvature perturbation induced by the spectator scalar field. We find that the small sound speed amplifies the curvature perturbation m…