Frontier Physics

Frontier physics pushes beyond the established frameworks of the Standard Model and general relativity into territory where our deepest theories must be extended or unified. Quantum information and computing applies the principles of quantum mechanics to the processing and transmission of information, developing qubits, quantum gates, error-correcting codes, and algorithms that promise exponential speedups for specific computational problems, while also illuminating foundational questions about entanglement, decoherence, and the nature of information itself. String theory and quantum gravity tackle what is arguably the central open problem in fundamental physics: reconciling general relativity with quantum mechanics at the Planck scale. String theory proposes that the fundamental constituents of nature are not point particles but one-dimensional strings whose vibrational modes produce the spectrum of observed particles, leading to predictions of extra dimensions, supersymmetry, and the celebrated AdS/CFT correspondence that connects gravitational theories to non-gravitational quantum field theories. Alternative approaches such as loop quantum gravity quantise spacetime itself, predicting a discrete geometry at the smallest scales. These two sub-topics represent the most ambitious research programmes in contemporary physics, where progress demands new mathematics as much as new experiments.