In quantum field theory, different quantum fields are indeed part of a larger framework and are interconnected in a profound way. Quantum fields are fundamental entities that pervade all of space and time. They describe the behavior of elementary particles and their interactions.
In the framework of quantum field theory, particles are considered as excitations or quanta of their respective fields. Each type of particle corresponds to a specific field, such as the electron field, photon field, or Higgs field. These fields are governed by specific equations, such as the Dirac equation or the Klein-Gordon equation, which dictate their behavior.
While different fields exist, they interact with each other through fundamental forces. For example, the electromagnetic field interacts with charged particles, the strong nuclear field interacts with quarks, and the weak nuclear field mediates interactions responsible for radioactive decay. These interactions are described mathematically using gauge theories, such as quantum electrodynamics (QED) and quantum chromodynamics (QCD).
The unification of these interactions into a single framework, often referred to as a theory of everything or a grand unified theory, is an active area of research in physics. Theoretical physicists seek to find a theoretical framework that can describe all known fundamental forces and particles within a single consistent theory.
It is important to note that our current understanding of the quantum nature of fields and their interconnections is based on theoretical models and experimental observations. As our knowledge advances, there is always the possibility of new discoveries or theoretical developments that may refine or expand our understanding of the fundamental nature of quantum fields and their relationships.