activity
19922023
most citedIs Cosmic Speed-Up Due to New Gravitational Physics?

2.3k citations · 13.2k across the 96 of their papers we have counts for

collaborators

96 papers

hep-ph2023★ 2 cited

Axions and Cosmic Magnetic Fields

George B. Field, Sean M. Carroll

We argue that if axions are the dark matter, their coupling to electromagnetism results in exponential growth of a helical magnetic field when the axion field first rolls down its…

quant-ph2023★ 1 cited

Completely Discretized, Finite Quantum Mechanics

Sean M. Carroll

I propose a version of quantum mechanics featuring a discrete and finite number of states that is plausibly a model of the real world. The model is based on standard unitary quantu…

quant-ph2021★ 1 cited

Reality as a Vector in Hilbert Space

Sean M. Carroll

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…

physics.hist-ph2021

The Quantum Field Theory on Which the Everyday World Supervenes

Sean M. Carroll

Effective Field Theory (EFT) is the successful paradigm underlying modern theoretical physics, including the "Core Theory" of the Standard Model of particle physics plus Einstein's…

quant-ph2021★ 22 cited

Energy Non-Conservation in Quantum Mechanics

Sean M. Carroll, Jackie Lodman

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 can clearly change…

quant-ph2020★ 64 cited

Quantum Mereology: Factorizing Hilbert Space into Subsystems with Quasi-Classical Dynamics

Sean M. Carroll, Ashmeet Singh

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