Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Free Energy Changes for Nonstandard States

Free Energy Changes for Nonstandard States

The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:

The Bohr Model

The Bohr Model

Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the nucleus...

The Quantum-Mechanical Model of an Atom

The Quantum-Mechanical Model of an Atom

Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra. Schrödinger...

The First Law of Thermodynamics

The First Law of Thermodynamics

The first law of thermodynamics deals with the total amount of energy in the universe. It states that this total amount of energy is constant. In other words, there has always been, and always will be, exactly the same amount of energy in the universe. Energy exists in many different forms. According to the first law of thermodynamics, energy may transfer from place to place or transform into different forms, but it cannot be created or destroyed. The transfers and transformations of energy...

The Entropy as a State Function

The Entropy as a State Function

Consider an arbitrary process that moves between two specific states (A and B) in a cyclic manner. This process is reversible and broken down into smaller parts that each follow a Carnot cycle. A Carnot cycle has two isothermal (constant temperature) processes. During these processes, the ratio of the amount of heat transferred to their respective temperature remains constant. The other two processes in the Carnot cycle are also reversible but adiabatic, which means they occur without any heat...

Entropy within the Cell

Entropy within the Cell

A living cell's primary tasks of obtaining, transforming, and using energy to do work may seem simple. However, the second law of thermodynamics explains why these tasks are harder than they appear. None of the energy transfers in the universe are completely efficient. In every energy transfer, some amount of energy is lost in a form that is unusable. In most cases, this form is heat energy. Thermodynamically, heat energy is defined as the energy transferred from one system to another that is...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Non-Kolbe electrolysis of <i>N</i>-protected-α-amino acids: a standardized method for the synthesis of <i>N</i>-protected (1-methoxyalkyl)amines.

RSC advances·2022

Same author

Micronuclei frequency in peripheral blood lymphocytes and levels of anti-p53 autoantibodies in serum of residents of Kowary city regions (Poland) with elevated indoor concentrations of radon.

Mutation research. Genetic toxicology and environmental mutagenesis·2019

Same author

Anticoagulation monitoring during extracorporeal circulation with the Hepcon/HMS device.

Perfusion·2012

Same author

Molecular dynamics and crystallization phenomenon of supercooled and glassy DNA and RNA nucleosides: β-adenosine, β-thymidine, and β-uridine.

Physical review. E, Statistical, nonlinear, and soft matter physics·2011

Same author

A Few Observations Regarding Light Therapy.

Canadian Medical Association journal·2010

Same author

MULTIPLE MYELOMA.

Canadian Medical Association journal·2010

Search research articles

Related Experiment Video

Updated: May 22, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Energy transport in closed quantum systems.

G A Levin¹, W A Jones, K Walczak

¹Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|May 17, 2012

Summary

This summary is machine-generated.

We explored quantum advection modes (QAMs) in closed quantum systems. Some QAMs drive energy flow, while others create a probability backflow, differing from conventional transport models.

More Related Videos

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Related Experiment Videos

Last Updated: May 22, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Area of Science:

Quantum physics
Statistical mechanics
Condensed matter theory

Background:

Energy transport in closed quantum systems is crucial for understanding quantum phenomena.
Stochastic perturbations introduce complex dynamics and energy flow.
Quantum advection modes (QAMs) offer a new framework for describing fluxes.

Purpose of the Study:

To investigate energy and probability transport in quantum systems driven by stochastic perturbations.
To analyze the role of quantum advection modes (QAMs) in energy flux.
To determine correlations between QAMs and the direction/magnitude of fluxes.

Main Methods:

Numerical solution of the time-dependent Schrödinger equation for a single particle in a perturbed parabolic potential.
Analysis of quantum advection modes (QAMs) derived from the density matrix off-diagonal elements.
Correlation analysis between QAMs and energy/probability fluxes.

Main Results:

Quantum advection modes (QAMs) were identified as key to describing probability and energy fluxes.
Some QAMs positively correlate with energy flow direction.
Other QAMs exhibit negative correlation, leading to probability backflow.

Conclusions:

The study reveals a novel mechanism for energy transport in quantum systems distinct from continuous spectrum models.
QAMs provide a powerful tool for analyzing transport phenomena in discrete quantum systems.
The findings challenge conventional understanding of energy and probability flow in quantum mechanics.