"Unfortunately, the formulation of general rules for the calculation of in the quantum theory of gravitation has only …"

"... it would be a bracing achievement, and major progress, to identify any concrete, observable phenomenon that bring…"

"By now it is clear that consistent theories of quantum gravity can be constructed in the context of string theory. Th…"

"... our most fundamental concept, that of spacetime, is itself being threatened as we probe the quantum nature of dyn…"

"Gravity's weakness makes it very difficult to measure its quantum effects; as a result, we have no experimental data …"

"Hawking's intitial foray into quantum gravity was more modest than Wheeler's and other[s]... a sneak approach. He fir…"

"... was formalized by a number of authors ... as the requirement that the wave function of a multi-electron system is…"

"What is the empirical content of quantum mechanics? Or how does the wave function assigned to a relate to the results…"

"… what is the wave function? Is it a complete and comprehensive representation of the world? Or do we need additional…"

"It has been known for some time that the Yang-Baxter equations can be solved using s. More recently it was discovered…"