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

Quantum cosmology and loop quantum gravity constitute two intertwined pillars in the quest for a quantum theory of gravity. Quantum cosmology applies the principles of quantum mechanics to the entire ...

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 ...

Their work introduces a new concept called q-desics, short for quantum-corrected paths through space–time. These paths generalize the familiar trajectories predicted by Einstein’s general theory of ...

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 ...

Although no axion signal was observed, researchers say the system demonstrated stable operation, tunability, and the ability ...

The lithium problem poses challenges to BBN models, sparking research into cosmic processes and enhancing our grasp of nuclear and astrophysical phenomena.

I've long been fascinated by the fundamental mystery of our universe's origin. In my work, I explore an alternative to the ...

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.

How did the universe start? Did we begin with a big bang, or was there a bounce? Might the cosmos evolve in a cycle of expansion and collapse, over and over for all eternity? Now, in two papers, ...