The worldline formalism presents an elegant and computationally efficient approach to quantum field theory, recasting field interactions in terms of first-quantised particle paths. By utilising path ...

Kellogg Stelle was a professor of physics at Imperial College London for decades until his death last month. In 1977, he developed a particle theory of gravity that’s renormalizable, but the theory’s ...

Quantum gravity and field theory represent a frontier where the principles of quantum mechanics are reconciled with Einstein’s description of gravity. Researchers are seeking a consistent framework ...

The search for quantum gravity is the next big step in physics, as researchers seek to unify the physics of the very small ...

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. If you wanted to answer the question of what's truly fundamental in ...

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This is a preview. Log in through your library . Abstract I analyse the conceptual and mathematical foundations of Lagrangian quantum field theory (QFT) (that is, the 'naive' (QFT) used in mainstream ...

An international research team has sparked interest in the scientific community with results in quantum physics. In their current study, the researchers reinterpret the Higgs mechanism, which gives ...

Even in an incomplete state, quantum field theory is the most successful physical theory ever discovered. Nathan Seiberg, one of its leading architects, talks about the gaps in QFT and how ...

Two leading scientists discuss the future of their field. Credit...Ariel Davis Supported by By Dennis Overbye The future belongs to those who prepare for it, as scientists who petition federal ...

Glassy state: a new field theory describes amorphous materials such as glass beads. (Courtesy: iStock/schmidt-z) Many common materials such as glass, compacted sand and toothpaste have a solid’s ...