Topic
Quantum field theory
4 questions tagged Quantum field theory — spanning every one of the seven Ws.
what
What is the Casimir effect?
The Casimir effect is a tiny attractive force between very closely spaced uncharged conductive plates. It arises from quantum fluctuations in the vacuum.
PhysicsQuantum field theory
when
When was quantum chromodynamics developed?
In the early 1970s, with major contributions from Murray Gell-Mann, Harald Fritzsch, and Heinrich Leutwyler. QCD became the theory of the strong interaction.
PhysicsQuantum field theory
whose
Whose discovery showed that the vacuum can create particle pairs?
Julian Schwinger explained quantum electrodynamic effects in the 1940s and 1950s. His work helped show that empty space is physically active.
PhysicsQuantum field theory
how
How does a force field become a particle in quantum physics?
In quantum field theory, forces are described by fields, and particles are excitations of those fields. For electromagnetism, the particle of the field is the photon.
PhysicsQuantum field theory