Gravitational redshift via quantized linear gravity

• URL: http://arxiv.org/abs/2504.03956v1
• Date: Fri, 04 Apr 2025 21:44:34 GMT
• Title: Gravitational redshift via quantized linear gravity
• Authors: Alessio Lapponi, Alessandro Ferreri, David Edward Bruschi,
• Abstract summary: We employ linearized quantum gravity to show that gravitational redshift occurs as a purely quantum process.<n>Redshift occurs as predicted by general relativity but arises in flat spacetime in the absence of curvature.<n>Results can help improve our understanding of the quantum nature of gravity in the low energy and low curvature regime.
• Score: 44.99833362998488
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We employ linearized quantum gravity to show that gravitational redshift occurs as a purely quantum process. To achieve our goal we study the interaction between propagating photonic wave-packets and gravitons. Crucially, the redshift occurs as predicted by general relativity but arises in flat spacetime in the absence of curvature. In particular, redshift as a classical gravitational effect can be understood as a mean-field process where an effective interaction occurs between the photon and gravitons in an effective highly-populated coherent state. These results can help improve our understanding of the quantum nature of gravity in the low energy and low curvature regime.

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