Primordial shear and the question of inflation

Details Primordial shear and the question of inflation Primordial shear and the question of inflation

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phlb..167...37m&link_type=abstract

Physics Letters B, Volume 167, Issue 1, p. 37-42.

Physics

21

Scientific paper

The role of primordial shear in two inflationary scenarios, Planck-time (Linde) inflation and the GUT inflation is discussed. In the Linde picture, including a simple ``particle creation'' term produces universes in which the temperature rapidly attains a stable asymptotic value just below the Planck temperature, whatever the Higgs field coupling constant. Such universes are truly isotropic by the time the GUT era is reached. (There is no supercooling because of particle creation.) In the GUT picture, inflation can occur notwithstanding the presence of anisotropy. However, in these models, initial anisotropy reduces the GUT era coherence length and it becomes more difficult to form the present universe from a single bubble.

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