vevsstabilisering

VeV stabilisation, short for vacuum expectation value stabilisation, is a concept in theoretical physics that addresses the issue of vacuum stability in quantum field theory. In quantum field theory, the vacuum state is the lowest energy state of a system, and the vacuum expectation value (veV) is the average value of a field in this state. However, in certain theories, such as the Standard Model of particle physics, the veVs of the Higgs field and other fields can lead to instabilities in the vacuum state.

VeV stabilisation refers to the mechanisms and conditions under which these veVs remain stable over time. This is crucial because an unstable vacuum could lead to catastrophic changes in the physical constants of the universe, such as the masses of particles or the strength of fundamental forces. Several approaches have been proposed to address veV stabilisation, including:

1. Supersymmetry: This theoretical framework posits that every known particle has a superpartner with a different spin. Supersymmetry can help stabilise the veVs by cancelling out certain contributions to the vacuum energy.

2. Technicolor: This is a hypothetical extension of the Standard Model that introduces new strong interactions. Technicolor can provide a mechanism for veV stabilisation by generating a large mass for the Higgs boson.

3. Large extra dimensions: Some theories propose the existence of additional spatial dimensions beyond the familiar three. These extra dimensions can affect the veVs and contribute to their stabilisation.

4. Dynamical mechanisms: These involve the interaction of multiple fields in such a way that their veVs are dynamically stabilised.

Understanding veV stabilisation is a key challenge in modern particle physics, as it has implications for the fundamental nature of the universe and the stability of its physical laws.