Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)
Quantum thermodynamics: A better understanding of how atoms soak up their surroundings
The best yet calculations of the effect of blackbody radiation on the wavefunction of ytterbium atoms, should help produce a better atomic clock.
Is it real? Physicists propose method to determine if the universe is a simulation
Gravity might amplify quantum fluctuations, create astrophysical objects
The day the universe froze: New dark energy model includes cosmological phase transition
Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.
Theorist helps sharpen tests of fundamental theory in high energy experiments
(Phys.org) —Three theoretical physicists have taken an important step toward eliminating theoretical ambiguities from the staggeringly complicated mathematics used to explore the interactions of quarks, ...
Ephemeral vacuum particles induce speed-of-light fluctuations
New research shows that the speed of light may not be fixed after all, but rather fluctuates.
Light particles illuminate the vacuum
Researchers from the Finnish Aalto University and the Technical Research Centre of Finland succeeded in showing experimentally that vacuum has properties not previously observed. According to the laws of ...
Researchers create light from 'almost nothing'
Shining new light on dark energy with galaxy clusters
(PhysOrg.com) -- Scientists' murky understanding of dark energy may have just gotten a little clearer, thanks to recent work by a team of researchers that includes astrophysicist Neelima Sehgal of the Kavli ...
Raising the prospects for quantum levitation
More than half-a-century ago, the Dutch theoretical physicist Hendrik Casimir calculated that two mirrors placed facing each other in a vacuum would attract. The mysterious force arises from the energy of virtual particles ...