Browse Physics

Researchers have measured the distance over which electrons generate photons with a simple mechanical technique, allowing better understanding of how the photons are produced.

Interactions between primordial photons and axions may be why the accepted model of nucleosynthesis overestimates the abundance of the isotope lithium-7.

An underground neutrino detector has found the first evidence of a nuclear reaction that produces deuterium in the sun.

The breaking of charge-parity symmetry at lower temperatures than expected in the initial stages of the big bang could explain the abundance of matter over antimatter in the universe.

The Millikan oil drop experiment, published in final form in 1913, demonstrated that charge comes in discrete chunks and was a bridge between classical electromagnetism and modern quantum physics.

Liquids that approach an often-quoted lower limit for viscosity are deemed “perfect,” but now this lower limit is itself being questioned.

An unusual excess of radio emission from outside the Milky Way may come from dark matter.

The observation of nearby galaxies provides new and stronger limits on dark matter.

A satellite currently hunting for planets around distant stars could potentially spot black holes that some theories take for the missing dark matter.

Theorists uncover universal effects underlying computer simulations of finite volume systems.

A search for evidence of particles predicted by supersymmetry—a favored extension of the standard model—suggests that if the theory is correct, it may be more complicated to discover these particles than previously thought.

The time-dependent solution of one of the most basic models in field theory has applications from nuclear to condensed-matter physics.

Most attempts to explain the recent data suggesting that neutrinos travel faster than the speed of light aren’t consistent with the Cherenkov-like radiation these particles would be expected to emit.

Researchers have demonstrated the key piece of equipment needed to produce the intense positron beams required for the next generation of particle accelerators.

Theorists gain insight into mechanisms that enhance the available symmetries of various quantum field theories.

Liquid helium-4 is integral in a source of slow-moving neutrons, with a five-fold increase in yield in density.

When searching for new physics at the Large Hadron Collider, researchers have to keep track of how many places they look.

Researchers predict that Majorana fermions can be found in magnetic field vortices in the bulk of the superconductor Cu_{x}Bi_{2}Se_{3}.