Cosmological vacuum pressure

What is the cosmological constant Omega?
Ω_Λ (Omega sub Lambda)
In a flat universe, Ω_Λ is the fraction of the energy of the universe due to the cosmological constant, i.e., what we would intuitively call the fraction of the universe that is made up of dark energy..
What is the pressure equation in cosmology?
In cosmology the assumption is usually made that there is a unique pressure associated with each density, so that p ≡ p(ρ).
Such a relationship is known as the equation of state..
What is the pressure of the cosmological constant?
(9), which does not appear in Newtonian gravity).
The cosmological constant has negative pressure, w=-1\\ , so its general relativistic contribution counteracts the normal force of gravity and provides an outwards acceleration..
According to present-day understanding of what is called the vacuum state or the quantum vacuum, it is "by no means a simple empty space".
According to quantum mechanics, the vacuum state is not truly empty but instead contains fleeting electromagnetic waves and particles that pop into and out of the quantum field.
This is the astronomer's cosmological constant problem. exactly, theory allows one to estimate its value.
Unfortunately, the estimates disagree with observational limits by a factor of 10¹²⁰.
This is the physicist's cosmological constant problem.

In cosmology, the cosmological constant problem or vacuum catastrophe is the pressure which counterbalances the action due to the cosmological constant.HistoryCutoff dependenceEstimated valuesProposed solutions

In cosmology, the cosmological constant problem or vacuum catastrophe is the substantial disagreement between the observed values of vacuum energy density HistoryCutoff dependenceEstimated valuesProposed solutions

Vacuum energy is an underlying background energy that exists in space throughout the entire Universe. The vacuum energy is a special case of zero-point energy ImplicationsField Strength of Vacuum EnergyHistoryVacuum energy in fiction

Cosmological vacuum pressure

What is the cosmological constant Omega?

What is the pressure equation in cosmology?

What is the pressure of the cosmological constant?