# Unruh model for the Einstein-Rosen charge: Squealing Wormholes?

Source: [Unruh model for the Einstein-Rosen charge: Squealing Wormholes?](<https://www.sota2.com/research/paper/68fa1ecb7a2b558e29324ad6>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T16:01:41.602Z

Authors: K.K. Nandi, D.H. Xu

Published: 2004-10-12T14:04:49.000Z

## Abstract

We present two kinds of acoustic models for the massless electric charge conceived by Einstein and Rosen in the form of a bridge (wormhole throat). It is found that the first kind of modelling requires a thin layer of exotic matter at the bridge. We also derive an acoustic equation that exclusively characterizes the model. Using a second kind of model, it is demonstrated that the Einstein-Rosen charge has a sonic Hawking-Unruh temperature proportional to +-1/$beta$, where $beta$ is the size of the charge. This suggests that (squealing!) wormholes can also be formally accommodated into Unruh's fluid model.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/gr-qc/0410052>)

[PDF](<https://arxiv.org/pdf/gr-qc/0410052.pdf>)