# Coupling Quantum Matter and Gravity

@inproceedings{Giulini2022CouplingQM, title={Coupling Quantum Matter and Gravity}, author={Domenico Giulini and Andr{\'e} Gro{\ss}ardt and Philip K Schwartz}, year={2022} }

In this contribution we deal with several issues one encounters when trying to couple quantum matter to classical gravitational fields. We start with a general background discussion and then move on to two more technical sections. In the first technical part we consider the question how the Hamiltonian of a composite two-particle system in an external gravitational field can be computed in a systematic post-Newtonian setting without backreaction. This enables us to reliably estimate the…

## One Citation

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## References

SHOWING 1-10 OF 102 REFERENCES

### Introduction to Quantum Effects in Gravity

- Physics
- 2007

This book, first published in 2007, is an introductory textbook on quantum field theory in gravitational backgrounds intended for undergraduate and beginning graduate students in the fields of…

### Post-Newtonian Description of Quantum Systems in Gravitational Fields

- Physics
- 2020

This thesis deals with the systematic treatment of quantum-mechanical systems in post-Newtonian gravitational fields. Starting from clearly spelled-out assumptions, employing a framework of geometric…

### Quantum gravitational corrections to the functional Schrödinger equation.

- PhysicsPhysical review. D, Particles and fields
- 1991

We derive corrections to the Schr\"odinger equation which arise from the quantization of the gravitational field. This is achieved through an expansion of the full functional Wheeler-DeWitt equation…

### On the Gravitization of Quantum Mechanics 1: Quantum State Reduction

- Physics
- 2014

This paper argues that the case for “gravitizing” quantum theory is at least as strong as that for quantizing gravity. Accordingly, the principles of general relativity must influence, and actually…

### Geometric post-Newtonian description of spin-half particles in curved spacetime

- Physics
- 2022

Einstein Equivalence Principle (EEP) requires all matter components to universally couple to gravity via a single common geometry: that of spacetime. This relates quantum theory with geometry as soon…

### Measurement Analysis and Quantum Gravity

- Physics
- 2008

We consider the question of whether consistency arguments based on measurement theory show that the gravitational field must be quantized. Motivated by the argument of Eppley and Hannah, we apply a…

### Interacting classical and quantum ensembles

- Physics
- 2005

A consistent description of interactions between classical and quantum systems is relevant to quantum measurement theory and to calculations in quantum chemistry and quantum gravity. A solution is…

### The Schrödinger–Newton equation and its foundations

- Physics, Mathematics
- 2014

The necessity of quantising the gravitational field is still subject to an open debate. In this paper we compare the approach of quantum gravity, with that of a fundamentally semi-classical theory of…

### Post-Newtonian corrections to Schrödinger equations in gravitational fields

- PhysicsClassical and Quantum Gravity
- 2019

In this paper we extend the WKB-like ‘non-relativistic’ expansion of the minimally coupled Klein–Gordon equation after (Kiefer and Singh 1991 Phys. Rev. D 44 1067–76; Lämmerzahl 1995 Phys. Lett. A…

### Problems with the Newton–Schrödinger equations

- Physics
- 2014

We examine the origin of the Newton–Schrödinger equations (NSEs) that play an important role in alternative quantum theories (AQT), macroscopic quantum mechanics and gravity-induced decoherence. We…