16 Facts About Cosmic inflation

Many physicists believe that inflation explains why the universe appears to be the same in all directions, why the cosmic microwave background radiation is distributed evenly, why the universe is flat, and why no magnetic monopoles have been observed.

Cosmic inflation found that if the universe contained a field in a positive-energy false vacuum state, then according to general relativity it would generate an exponential expansion of space.

Theory of Cosmic inflation thus explains why the temperatures and curvatures of different regions are so nearly equal.

Cosmic inflation'storically, proposed solutions included the Phoenix universe of Georges Lemaitre, the related oscillatory universe of Richard Chase Tolman, and the Mixmaster universe of Charles Misner.

Cosmic inflation eventually noted that gravitational effects would be significant, but he did not calculate these effects and did not apply the results to cosmology.

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Various Cosmic inflation theories have been proposed that make radically different predictions, but they generally have much more fine tuning than should be necessary.

Since the simplest models of grand unification have failed, it is thought by many physicists that Cosmic inflation will be included in a supersymmetric theory such as string theory or a supersymmetric grand unified theory.

At present, while Cosmic inflation is understood principally by its detailed predictions of the initial conditions for the hot early universe, the particle physics is largely ad hoc modelling.

New Cosmic inflation requires the Universe to have a scalar field with an especially flat potential and special initial conditions.

All models of eternal Cosmic inflation produce an infinite, hypothetical multiverse, typically a fractal.

Cosmic inflation showed that the inflation could proceed forever by producing bubbles of non-inflating space filled with hot matter and radiation surrounded by empty space that continues to inflate.

Cosmic inflation stressed that the thermodynamic arrow of time necessitates low entropy initial conditions, which would be highly unlikely.

Dark energy is broadly similar to Cosmic inflation and is thought to be causing the expansion of the present-day universe to accelerate.

Brane Cosmic inflation suggests that Cosmic inflation arises from the motion of D-branes in the compactified geometry, usually towards a stack of anti-D-branes.

Recurrent criticism of Cosmic inflation is that the invoked inflaton field does not correspond to any known physical field, and that its potential energy curve seems to be an ad hoc contrivance to accommodate almost any data obtainable.

Cosmic inflation calls 'bad inflation' a period of accelerated expansion whose outcome conflicts with observations, and 'good inflation' one compatible with them:.