Can bulk viscosity drive inflation\?

Details Can bulk viscosity drive inflation\? Can bulk viscosity drive inflation\?

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..36.1603p&link_type=abstract

Physical Review D (Particles and Fields), Volume 36, Issue 6, 15 September 1987, pp.1603-1606

Physics

Fluid Dynamics

39

Relativistic Fluid Dynamics, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Contrary to other claims, we argue that bulk viscosity associated with the interactions of non- relativistic particles with relativistic particles around the time of the grand unified theory (GUT) phase transition cannot lead to inflation. Simply put, the key ingredient for inflation, negative pressure, cannot arise due to the bulk-viscosity effects of a weakly interacting mixture of relativistic and nonrelativistic particles.

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