# Yielding and large deviations in micellar gels: a model

Source: [Yielding and large deviations in micellar gels: a model](<https://www.sota2.com/research/paper/68fa2bf91e209131ce84bf2f>)

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

Data updated: 2025-10-24T15:03:22.741Z

Authors: Saroj Kumar Nandi, Bulbul Chakraborty, A. K. Sood, Sriram Ramaswamy

Published: 2012-10-06T19:13:28.000Z

## Abstract

We present a simple model to account for the rheological behavior observed in recent experiments on micellar gels. The model combines attachment-detachment kinetics with stretching due to shear, and shows well-defined jammed and flowing states. The large deviation function (LDF) for the coarse-grained velocity becomes increasingly non-quadratic as the applied force $F$ is increased, in a range near the yield threshold. The power fluctuations are found to obey a steady-state fluctuation relation (FR) at small $F$. However, the FR is violated when $F$ is near the transition from the flowing to the jammed state although the LDF still exists; the antisymmetric part of the LDF is found to be nonlinear in its argument. Our approach suggests that large fluctuations and motion in a direction opposite to an imposed force are likely to occur in a wider class of systems near yielding.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1210.1987>)

[PDF](<https://arxiv.org/pdf/1210.1987.pdf>)