A century after the discovery of quantum mechanics, the meaning of quantum mechanics still
remains elusive. This is largely due to the puzzling nature of the wave function, the central …

A bstract Chaos and complexity entail an entropic and computational obstruction to
describing a system, and thus are intrinsically difficult to characterize. In this paper, we …

I defend the extremist position that the fundamental ontology of the world consists of a vector
in Hilbert space evolving according to the Schrödinger equation. The laws of physics are …

We study the question of how to decompose Hilbert space into a preferred tensor-product
factorization without any preexisting structure other than a Hamiltonian operator, in particular …

It has long been believed that dissipative timescales τ obey a “Planckian” bound τ≳(ℏ/k BT)
in strongly coupled quantum systems. Despite much circumstantial evidence, however, there …

To the best of our current understanding, quantum mechanics is part of the most
fundamental picture of the universe. It is natural to ask how pure and minimal this …

We consider the emergence from quantum entanglement of spacetime geometry in a bulk
region. For certain classes of quantum states in an appropriately factorized Hilbert space, a …

A bstract We study correlation functions in the one-dimensional\(\mathcal {N}= 2\)
supersymmetric SYK model. The leading order 4-point correlation functions are computed …

We study quantum many-body systems with a global U (1) conservation law, focusing on a
theory of $ N $ interacting fermions with charge conservation, or $ N $ interacting spins with …

We study the conservation of energy, or lack thereof, when measurements are performed in
quantum mechanics. The expectation value of the Hamiltonian of a system changes when …