Matter-Antimatter Asymmetry Generated by Loop Quantum Gravity

Details Matter-Antimatter Asymmetry Generated by Loop Quantum Gravity Matter-Antimatter Asymmetry Generated by Loop Quantum Gravity

2003-04-14

arxiv.org/abs/gr-qc/0304051v2

Phys.Lett. B565 (2003) 27-32

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To appear in Phys. Lett. B. Minor changes in presentation. References added

Scientific paper

10.1016/S0370-2693(03)00761-5

We show that Loop Quantum Gravity provides new mechanisms through which observed matter-antimatter asymmetry in the Universe can naturally arise at temperatures less than GUT scale. This is enabled through the introduction of a new length scale ${\cal L}$, much greater than Planck length ($l_P$), to obtain semi-classical weave states in the theory. This scale which depends on the momentum of the particle modifies the dispersion relation for different helicities of fermions and leads to lepton asymmetry.

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