# Dynamical Coulomb blockade of thermal transport

## TL;DR

This paper investigates how energy exchange with the environment affects thermoelectric transport in quantum dots, revealing symmetry violations linked to increased efficiency and heat rectification.

## Contribution

It introduces a model incorporating dynamical Coulomb blockade effects into thermoelectric transport analysis of quantum dots.

## Key findings

- Symmetry breaking in Onsager coefficients enhances maximum power efficiency.
- Dynamical Coulomb blockade induces heat rectification.
- Environmental coupling influences thermoelectric performance.

## Abstract

The role of energy exchange between a quantum system and its environment is investigated from the perspective of the Onsager conductance matrix. We consider the thermoelectric linear transport of an interacting quantum dot coupled to two terminals under the influence of an electrical potential and a thermal bias. We implement in our model the effect of coupling to electromagnetic environmental modes created by nearby electrons within the P(E)-theory of dynamical Coulomb blockade. Our findings relate the lack of some symmetries among the Onsager matrix coefficients with an enhancement of the efficiency at maximum power and the occurrence of the heat rectification phenomenon.