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_papers/Deppe:2025pvd.md

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+---
+title: "Signatures of Quantum Gravity in Gravitational Wave Memory"
+authors:
+  - "Deppe, Nils"
+  - "Heisenberg, Lavinia"
+  - "Kidder, Lawrence E."
+  - "Maibach, David"
+  - "Ma, Sizheng"
+  - "Moxon, Jordan"
+  - "Nelli, Kyle C."
+  - "Throwe, William"
+  - "Vu, Nils L."
+jref:
+doi:
+date: 2025-02-27
+arxiv: "2502.20584"
+used_spec: true
+abstract: |
+  We study the impact of quantum corrections to gravitational
+  waveforms on the gravitational wave memory effect. In certain
+  quantum gravity theories and semi-classical frameworks, black holes
+  (or other exotic compact objects) exhibit reflective properties that
+  cause quasi-normal modes of a binary merger waveform to partially
+  reflect off the horizon. If these reflections reach the detector,
+  the measured gravitational wave signal may show echo-like features
+  following the initial ringdown phase. Detecting such echoes, or
+  their indirect signatures, would offer compelling evidence for the
+  quantum nature of black holes. Given that direct detection of echoes
+  requires finely tuned waveform templates, exploring alternative
+  imprints of this phenomenon is crucial. In this work, we pursue this
+  goal by calculating corrections to the null memory arising from
+  echo-like features, formulated in terms of the Newman-Penrose scalar
+  \(\Psi_0\). We demonstrate that the morphology of the resulting
+  features is model-independent rendering them conceptually much
+  easier to detect in real interferometer data than the raw echo. The
+  corresponding signal-to-noise ratio of echo-induced features
+  appearing in the gravitational wave memory is estimated
+  subsequently. We further compute the physical fluxes associated to
+  the echo at both the black hole horizon and null infinity and
+  identify novel distinguishing features of the underlying
+  reflectivity models in measurement data.
+---