Can the abyss swallow gravitational waves or why do we not observe echoes?

Here we propose a simple explanation why echoes from wormholes mimicking black holes may be so small that they cannot be observed. The essence of the effect is in the redistribution of the initial energy of gravitational wave among multiple universes, connected by a wormhole. Copyright (C) 2022 EPLA.

Automated summary

The paper presents a simple explanation for why echoes from wormholes mimicking black holes may be too small to be observed, which is due to the redistribution of the initial energy of gravitational waves among multiple universes connected by a wormhole.