activity
20232025
most citedThe classical-quantum limit

17 citations · 24 across the 6 of their papers we have counts for

collaborators

6 papers

quant-ph2025

A one-world interpretation of quantum mechanics

Isaac Layton, Jonathan Oppenheim, Zachary Weller-Davies

The measurement problem is the issue of explaining how the objective classical world emerges from a quantum one. Here we take a different approach. We assume that there is an objec…

quant-ph2024

A quantum oscillator interacting with a classical oscillator

Muhammad Sajjad, Andrea Russo, Maite Arcos +2

We study a quantum oscillator interacting with, and back-reacting on, a classical oscillator. This can be done consistently provided the quantum system decoheres, while the backrea…

gr-qc2024★ 5 cited

Anomalous contribution to galactic rotation curves due to stochastic spacetime

Jonathan Oppenheim, Andrea Russo

We consider a proposed alternative to quantum gravity, in which the spacetime metric is treated as classical, even while matter fields remain quantum. Consistency of the theory nec…

hep-th2024★ 2 cited

Renormalisation of postquantum-classical gravity

Andrzej Grudka, Tim R. Morris, Jonathan Oppenheim +2

One of the obstacles to reconciling quantum theory with general relativity, is constructing a theory which is both consistent with observation, and and gives finite answers at high…

gr-qc2024

Diffeomorphism invariant classical-quantum path integrals for Nordstrom gravity

Jonathan Oppenheim, Andrea Russo, Zachary Weller-Davies

When classical degrees of freedom and quantum degrees of freedom are consistently coupled, the former diffuse, while the latter undergo decoherence. Here, we construct a theory of…

quant-ph2023★ 17 cited

The classical-quantum limit

Isaac Layton, Jonathan Oppenheim

The standard notion of a classical limit, represented schematically by , provides a method for approximating a quantum system by a classical one. In this work w…