No, the concept of the Aether is not making a comeback through Quantum Field Theory (QFT). In the context of classical physics, the Aether was once proposed as a medium through which light waves were thought to propagate. However, experimental evidence, including the famous Michelson-Morley experiment in the late 19th century, contradicted the existence of such an Aether.
Quantum Field Theory, on the other hand, is a framework used to describe the behavior of fundamental particles and their interactions based on quantum mechanics and special relativity. In QFT, particles and their interactions are described in terms of quantum fields, which are mathematical constructs that permeate all of space.
QFT does not require or rely on the existence of an Aether-like medium. Instead, it describes particles and forces as excitations and interactions of quantum fields. These fields are not material substances or a medium; rather, they are mathematical representations used to describe the behavior of particles and their interactions according to the principles of quantum mechanics.
It's worth noting that the concept of the Aether, as understood in classical physics, has been thoroughly debunked by experimental observations and the development of modern physics. The current understanding of the fundamental forces and particles is based on the framework of quantum field theory and the principles of quantum mechanics and relativity.