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In 1974, Hawking put forward the notion that black holes are not truly ‘black’. Instead, a black hole continuously burns and emits all of its mass in the form of thermal radiation. In recent years progress has been made in understanding this burning process. It turns out that black holes are highly... more
Since 1997 physicists have understood that anti-de Sitter quantum gravity in d+1 dimensions can emerge from suitable d dimensional conformally invariant quantum field theories. This is a primary example of holography. But the question of precisely which quantum field theories give rise to emergent... more
A team of Stanford physicists, including SITP members Peter Graham and Tim Wiser, have proposed a space mission that could detect or rule out some popular long-range modifications of gravity. Highly precise measurements of the spacecraft’s position as it flies out of the Solar System provide a test... more
The hierarchy problem, the puzzlingly light mass of the Higgs, is one of the largest open questions in physics beyond the Standard Model.  A new class of solutions is found which replaces physics at the weak scale with dynamical relaxation during the early universe, thus giving radically different... more
Many physicists believe that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry. This article, published in Nature, describes much of the work of the It From Qubit Simons Foundation collaboration. more