In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy.
Generally, it contains no physical particles. Zero-point field is sometimes used as a synonym for the vacuum state of an individual quantized field.Oct 17, 2022.
In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy.
Generally, it contains no physical particles. Zero-point field is sometimes used as a synonym for the vacuum state of an individual quantized field.Oct 17, 2022.
QED vacuum is a state with no matter particles (hence the name), and no photons.
As described above, this state is impossible to achieve experimentally. (Even if every matter particle could somehow be removed from a volume, it would be impossible to eliminate all the blackbody photons.).
The vacuum energy in quantum field theory can be set to any value by renormalization.
This view treats the cosmological constant as simply another fundamental physical constant not predicted or explained by theory.
In quantum field theory, the ground state is usually called the vacuum state or the vacuum.
In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy.
Generally, it contains no physical particles.
The vacuum state is associated with a zero-point energy, and this zero-point energy (equivalent to the lowest possible energy state) has measurable effects.
In the laboratory, it may be detected as the Casimir effect.
In physical cosmology, the energy of the cosmological vacuum appears as the cosmological constant.
In cosmology, the cosmological constant problem or vacuum catastrophe is the substantial disagreement between the observed values of vacuum energy density (the small value of the cosmological constant) and the much larger theoretical value of zero-point energy suggested by quantum field theory .
Type of quantum state in de Sitter spacetime
