Collective excitations analogous to phonons are derived in quantum gravity condensates within a group field theory model, yielding leading beyond-mean-field corrections to emergent Friedmann dynamics.
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A new LQC model with an added curvature term produces a quantum bounce that resolves the singularity at lower volume than standard LQC while preserving symmetric effective dynamics.
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Collective excitations in quantum gravity condensates
Collective excitations analogous to phonons are derived in quantum gravity condensates within a group field theory model, yielding leading beyond-mean-field corrections to emergent Friedmann dynamics.
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Effective dynamics of a homogeneous and isotropic universe with quantum curvature
A new LQC model with an added curvature term produces a quantum bounce that resolves the singularity at lower volume than standard LQC while preserving symmetric effective dynamics.