Fermion spins in loop quantum gravity

Mansuroglu R, Sahlmann H (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review D American Physical Society

Book Volume: 103

Journal Issue: 6

DOI: 10.1103/PhysRevD.103.066016

Abstract

We define and study kinematical observables involving fermion spin, such as the total spin of a collection of particles, in loop quantum gravity. Due to the requirement of gauge invariance, the relevant quantum states contain strong entanglement between gravity and fermionic degrees of freedom. Interestingly we fmd that properties and spectra of the observables are nevertheless similar to their counterparts from quantum mechanics. However, there are also new effects. Due to the entanglement between gravity and fermionic degrees of freedom, alignment of quantum spins has consequences for quantized geometry. We sketch a particular effect of this kind that may in principle be observable.

Authors with CRIS profile

Refik Mansuroglu Chair for Theoretical Physics III (Quantum Gravity) Hanno Sahlmann Professur für Theoretische Physik

How to cite

APA:

Mansuroglu, R., & Sahlmann, H. (2021). Fermion spins in loop quantum gravity. Physical Review D, 103(6). https://doi.org/10.1103/PhysRevD.103.066016

MLA:

Mansuroglu, Refik, and Hanno Sahlmann. "Fermion spins in loop quantum gravity." Physical Review D 103.6 (2021).

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