Quantum Thermodynamics

14/08/2025

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04/03/2025

22/05/2024

Quantum Thermodynamics 2024: Unique Frameworks of 1st and 2nd Law

This article provides an explanation of the first and second laws of quantum thermodynamics. These laws provide different definitions of heat and work and introduce new forms of energy. In classical thermodynamics, the first law states that the change in internal energy of the system is equal to the sum of the amount of heat exchanged and the work done. However, when we deal with thermodynamics in the quantum regime, the first law might differ from the classical case. Quantum thermodynamics is a rapidly evolving field due to its importance in quantum technology. It involves studying the thermodynamic properties of a quantum system. We will cover thermodynamics in the quantum regime, its fundamental aspects, and new directions.

Table of Contents
An Overview of Classical Thermodynamics
Second Law of Classical Thermodynamics
First Law of Classical Thermodynamics
Reversible Processes
Irreversible Processes
First Law of Quantum Thermodynamics (Using Standard Definitions)
Quantum Thermodynamics Framework Using Wigner Phase-Space Description
First & Second Law of Quantum Thermodynamics (For Autonomous Quantum Systems)
First Law of Quantum Thermodynamics (Using Coherent Energy)
Frequently Asked Questions
What is Quantum Thermodynamics?
Is there any unique framework for quantum thermodynamics?
Is von Neumann entropy considered as thermodynamic entropy in quantum thermodynamics?
Is the first law of quantum thermodynamics different from the classical case?

https://quantumthermodynamic.com/first-law-of-quantum-thermodynamics/

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Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.

~ Albert Einstein