A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.

String theory is one of many attempts to develop a quantum gravity model. String theory suggests that particles are actually tiny strings. Imagine a guitar string; ...

In light of the recent criticisms of string theory, preeminent physicist Juan Maldacena sheds light on the promise of string theory and how it fits into our current understanding of the universe. In ...

For over 100 years, two theories have shaped our understanding of the universe: quantum mechanics and Einstein’s general ...

The prevailing assumption has been that Einstein's theory of gravity must be modified, or 'quantized', in order to fit within quantum theory. This is the approach of two leading candidates for a ...

As a result, alternative theories have emerged—string theory, loop quantum gravity, asymptotic safety, and others—all aiming to fill this gap. Still, none have offered a complete, ...

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests. The model aligns closely with recent dark ...

So far, reconciliation efforts have been dominated by the idea that our current understanding of gravity is incomplete, and that a quantized description of the interaction is required. This reasoning ...

A new theory of quantum gravity, which attempts to unite quantum physics with Einstein's relativity, could help solve the puzzle of the universe's expansion, a theoretical paper suggests.

Quantum gravity research aims to merge general relativity and quantum mechanics, potentially reshaping our understanding of the universe's fundamental laws.

String theory is a mathematical description of nature that requires space to possess several ... scientists could finally unravel the mysteries about how quantum physics’ relation to gravity, ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.