Very large angular scales and very high energy physics

Details Very large angular scales and very high energy physics Very large angular scales and very high energy physics

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..231...43a&link_type=abstract

Physics Letters B, Volume 231, Issue 1-2, p. 43-48.

Physics

13

Scientific paper

The early production of gravitational waves in different inflationary scenarios is most simply analyzed in a conformally transformed metric where it is possible to write and discuss a simple expression for their amplitude at the post-inflationary horizon reenter. Three special cases are considered here: generalized gravity lagrangians L(R), scalar-tensor, and multidimensional (or Kaluza-Klein) theories. In the latter case any upper limit on ΔT/T may set a lower bound to the compactification ratio of the inner radius b(t)/b0 during the de Sitter phase.

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