# Heat flux direction controlled by power-law oscillators under non-Gaussian fluctuations

## TL;DR

This study investigates how non-harmonic power-law oscillators under non-Gaussian fluctuations can control heat flux direction, revealing potential for bidirectional thermal regulation in complex systems.

## Contribution

It introduces a chain of power-law oscillators to demonstrate how potential deformability influences heat flux direction under non-Gaussian baths.

## Key findings

- Potential deformability controls heat flux direction
- Non-Gaussian fluctuations can reverse heat flow
- Numerical simulations confirm bidirectional control

## Abstract

Chains of particles coupled through anharmonic interactions and subject to non-Gaussian baths can exhibit paradoxical outcomes such as heat currents flowing from colder to hotter reservoirs. Aiming to explore the role of generic non-harmonicities in mediating the contributions of non-Gaussian fluctuations to the direction of heat propagation, we consider a chain of power-law oscillators, with interaction potential $V(x) \propto |x|^\alpha$, subject to Gaussian and Poissonian baths at its ends. Performing numerical simulations and addressing heuristic considerations, we show that a deformable potential has bidirectional control over heat flux.