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

The Wave Nature of Light

The Wave Nature of Light

The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.

Detection of Black Holes

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...

Space-Time Curvature and the General Theory of Relativity

Space-Time Curvature and the General Theory of Relativity

In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Photoelectric Effect

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

Momentum And Radiation Pressure

Momentum And Radiation Pressure

An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because electromagnetic waves contain and transport momentum. The force accounts for the wave's radiation pressure exerted on the object. Maxwell's prediction was confirmed in 1903 by Nichols and Hull by precisely measuring radiation pressures with a torsion balance. The measuring instrument had mirrors suspended from a fiber kept inside a glass container.

You might also read

Related Articles

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

Sort by

Same author

Coarctation of the aorta and persistent left superior vena cava: HDlive Flow features at 14 weeks of gestation.

Case reports in perinatal medicine·2025

Same author

Characterization and rational engineering of an alkaline-tolerant azoreductase derived from Roseibium sp. H3510 for enhanced decolorization of azo dyes.

International journal of biological macromolecules·2024

Same author

The METTL3/TRAP1 axis as a key regulator of 5-fluorouracil chemosensitivity in colorectal cancer.

Molecular and cellular biochemistry·2024

Same author

Magnesium polypeptide combined with microbially induced calcite precipitation for remediation of lead contamination in phosphate mining wasteland soil.

Environmental research·2024

Same author

Improving Image Quality and Diagnostic Performance of CCTA in Patients with Challenging Heart Rate Conditions using a Deep Learning-based Motion Correction Algorithm

Current medical imaging·2024

Same author

Untargeted metabolomics analysis using UPLC-QTOF/MS and GC-MS to unravel changes in antioxidant activity and compounds of almonds before and after roasting.

Food research international (Ottawa, Ont.)·2024

Search research articles

Related Experiment Video

Updated: Nov 23, 2025

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Light dark photon dark matter from inflation.

Yuichiro Nakai¹, Ryo Namba¹, Ziwei Wang²

¹Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China.

Journal of High Energy Physics : JHEP

|January 4, 2021

Summary

This summary is machine-generated.

Scientists explored producing light dark photon dark matter by coupling it with the inflaton. This mechanism efficiently generates dark matter during cosmic inflation, matching observed abundance with masses down to 10 eV.

Keywords:

Beyond Standard Model Cosmology of Theories beyond the SM

More Related Videos

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Related Experiment Videos

Last Updated: Nov 23, 2025

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Area of Science:

Cosmology
Particle Physics
Astrophysics

Background:

The nature of dark matter remains a significant mystery in modern physics.
Inflationary cosmology provides a framework for the early universe's rapid expansion.

Purpose of the Study:

Investigate the production of light dark photon dark matter.
Explore a novel mechanism linking dark photons and the inflaton field.

Main Methods:

Analytical computation of dark photon production during inflation.
Modeling the interaction between the dark photon field and the inflaton.

Main Results:

Efficient production of large-wavelength dark photons due to inflaton motion.
Dark photons become non-relativistic before matter-radiation equality.
Achieved correct relic abundance for dark photon dark matter.

Conclusions:

The proposed mechanism offers a viable pathway for light dark photon dark matter.
A dark photon mass as low as 10 eV is consistent with cosmological observations.