# Quantum Otto engines at relativistic energies

@article{Myers2021QuantumOE, title={Quantum Otto engines at relativistic energies}, author={Nathan M. Myers and Obinna Abah and Sebastian Deffner}, journal={New Journal of Physics}, year={2021}, volume={23} }

Relativistic quantum systems exhibit unique features not present at lower energies, such as the existence of both particles and antiparticles, and restrictions placed on the system dynamics due to the light cone. In order to understand what impact these relativistic phenomena have on the performance of quantum thermal machines we analyze a quantum Otto engine with a working medium of a relativistic particle in an oscillator potential evolving under Dirac or Klein–Gordon dynamics. We examine… Expand

#### References

SHOWING 1-10 OF 143 REFERENCES

Optimization of a relativistic quantum mechanical engine.

- Physics, Medicine
- Physical review. E
- 2016

This analysis derives the expression of power output and reproduces the expression for the efficiency at maximum power and uses a three-level system of two noninteracting fermions as its working substance. Expand

Quantum simulation of the Dirac equation

- Physics, Medicine
- Nature
- 2010

A proof-of-principle quantum simulation of the one-dimensional Dirac equation using a single trapped ion set to behave as a free relativistic quantum particle and study Zitterbewegung for different initial superpositions of positive- and negative-energy spinor states. Expand

Quantum heat engine in the relativistic limit: the case of a Dirac particle.

- Physics, Medicine
- Physical review. E, Statistical, nonlinear, and soft matter physics
- 2012

We studied the efficiency of two different schemes for a quantum heat engine, by considering a single Dirac particle trapped in an infinite one-dimensional potential well as the "working substance."… Expand

Quantum supremacy of many-particle thermal machines

- Physics
- 2016

While the emergent field of quantum thermodynamics has the potential to impact energy science, the performance of thermal machines is often classical. We ask whether quantum effects can boost the… Expand

Relativistic quantum heat engine from uncertainty relation standpoint

- Physics, Medicine
- Scientific Reports
- 2019

This model is used to explore the work extraction and the efficiency of the heat engine for a relativistic case from the standpoint of uncertainty relation, where the incompatible observables are the position and the momentum operators. Expand

Quantum Heat Engines with Singular Interactions

- Computer Science, Physics
- Symmetry
- 2021

Using wave function symmetry as a resource to enhance the performance of a quantum Otto engine is examined by incorporating a singular interaction that allows the effective symmetry to be tuned between the bosonic and fermionic limits. Expand

Two-dimensional gas of massless Dirac fermions in graphene

- Medicine, Physics
- Nature
- 2005

This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions. Expand

Superradiant Quantum Heat Engine

- Physics, Medicine
- Scientific reports
- 2015

This work proposes a QHE which consists of a photon gas inside an optical cavity as the working fluid and quantum coherent atomic clusters as the fuel and shows that the work output becomes proportional to the square of the number of the atoms. Expand

Dirac equation and quantum relativistic effects in a single trapped ion.

- Physics, Medicine
- Physical review letters
- 2007

This work presents a method of simulating the Dirac equation in 3+1 dimensions for a free spin-1/2 particle in a single trapped ion, and studies relevant quantum-relativistic effects, like the Zitterbewegung and Klein's paradox, the transition from massless to massive fermions, and the relativistic and nonrel ativistic limits, via the tuning of controllable experimental parameters. Expand

Quantum Relativistic Diesel Engine with Single Massless Fermion in 1 Dimensional Box System

- Physics
- 2018

The quantum Diesel of a single fermion in 1D box system has been explored. The Fermion particle meets the Dirac's relativistic Hamiltonian with a chosen mass worth zero. This Relativistic Diesel… Expand