"Modelling shows how the infant Universe might have stayed warm and dense during its primoridal expansion."
"The 'inflationary' model of cosmology explains many large-scale features of the Universe as the result of a primordial period of exponential, almost instantaneous cosmic expansion called inflation."
"But theoretical models of inflation tend to either be contrived or clash with observations."
Inflation posits a primordial period of exponential, nearly instantaneous cosmic expansion that accounts for many large-scale features of the Universe. Maintaining a warm, dense state during that rapid expansion presents theoretical challenges. Existing inflationary constructions often require contrivances or produce predictions at odds with observations. New modelling identifies ways for the early Universe to retain heat and density during inflationary expansion, reducing tension between theoretical requirements and empirical constraints. Those modelling results inform viable parameter ranges and physical mechanisms that could reconcile inflationary dynamics with observed cosmological properties.
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