Repulsive gravity at the quantum scale would have flattened out inhomogeneities in the early universe First light The cosmic microwave background, as imaged by the European Space Agency’s Planck ...

Physicists from around the country converged at UC Santa Barbara for two days of talks and camaraderie recently in memory of esteemed physicist Professor Jim Hartle, one of four cofounders of the ...

Matrix models have emerged as a powerful framework in theoretical physics, offering a nonperturbative approach to describing quantum space-time. In these models, fundamental degrees of freedom are ...

Quantum gravity and cosmology represent a frontier in theoretical physics where the principles of quantum mechanics are integrated with the framework of general relativity. This synthesis is crucial ...

The mystery of dark matter—unseen, pervasive, and essential in standard cosmology—has loomed over physics for decades. In new ...

Where did the universe come from? Where is it headed? Answering these ­questions requires that we understand physics on two vastly different scales: the cosmological, referring to the realm of galaxy ...

Thomas Hertog is professor of theoretical physics at KU Leuven (Belgium). The late physicist Stephen Hawking first asked me to work with him to develop “a new quantum theory of the Big Bang” in 1998.

Quantum physics may be the secret ingredient for understanding cosmic objects that our telescopes cannot show us in detail, or at all. To understand space, we collect and analyse light that travels ...