Another open question is whether there is a polynomial-time algorithm for approximating the number of perfect ... up on several concepts familiar from undergraduate modules, as this example ...

Here we develop a polynomial time algorithm that provably finds the ... this possibility is ruled out by examples of 1D systems in which the ground state satisfies an area law with only a ...

For example, it has a strange property ... but it comes close. It is quasi-polynomial, he asserts, which means that for a graph with n nodes, the algorithm’s running time is comparable to n raised not ...

For example, it has a strange ... It is quasi-polynomial, he asserts, which means that for a graph with n nodes, the algorithm’s running time is comparable to n raised not to a constant power ...