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Updated: Jun 5, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Analog model for quantum gravity effects: phonons in random fluids
G Krein1, G Menezes, N F Svaiter
1Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, SP, Brazil. gkrein@ift.unesp.br
Abstract:
We describe an analog model for quantum gravity effects in condensed matter physics. The situation discussed is that of phonons propagating in a fluid with a random velocity wave equation. We consider that there are random fluctuations in the reciprocal of the bulk modulus of the system and study free phonons in the presence of Gaussian colored noise with zero mean. We show that, in this model, after performing the random averages over the noise function a free conventional scalar quantum field theory describing free phonons becomes a self-interacting model.
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