One of the biggest mysteries in contemporary particle physics and cosmology is why dark energy, which is
observed to dominate energy density of the universe, has a remarkably small (but not zero) value.
This value is so small, it is perhaps 120 orders of magnitude less than would be expected based on
fundamental physics, physicists say.
Resolving this problem, often called the cosmological constant problem, has so far eluded theorists.
A graphic showing traces of particle collisions which CERN scientists have used to prove the existance of the Higgs boson. Photo: AFP
The recently discovered Higgs boson could provide a possible "portal" to physics that could help explain
some of the attributes of the enigmatic dark energy, and help resolve the cosmological constant problem.
Now, two physicists -- Lawrence Krauss of Arizona State University
and James Dent of the University of Louisiana-Lafayette study
how a possible small coupling between - the Higgs particle, and possible new particles likely to be associated
with what is conventionally called the Grand Unified Scale - could result in the existence of another background
field in nature in addition to the Higgs field.
It would contribute an energy density to empty space of precisely the correct scale to correspond to the
observed energy density.
Current observations of the universe show it is expanding at an accelerated rate. But this acceleration cannot
be accounted for on the basis of matter alone.
Putting energy in empty space produces a repulsive gravitational force opposing the attractive force produced
by matter, including the dark matter that is inferred to dominate the mass of essentially all galaxies, but
which doesn't interact directly with light and, therefore, can only be estimated by its gravitational influence.
Because of this phenomenon and because of what is observed in the universe, it is thought that such 'dark energy'
contributes up to 70 percent of the total energy density in the universe, while observable matter contributes
only 2 to 5 percent, with the remaining 25 percent or so coming from dark matter.
The source of this dark energy and the reason its magnitude matches the inferred magnitude of the energy in empty
space is not currently understood, making it one of the leading outstanding problems in particle physics today.
"Now that the Higgs boson has been discovered, it provides a possible 'portal' to physics at much higher energy
scales through very small possible mixings and couplings to new scalar fields which may operate at these scales."
"We demonstrate that the simplest small mixing, related to the ratios of the scale at which electroweak physics
operates, and a possible Grand Unified Scale, produces a possible contribution to the vacuum energy today of
precisely the correct order of magnitude to account for the observed dark energy," Krauss explained.
"Our paper demonstrates that a very small energy scale can at least be naturally generated within the context
of a very simple extension of the standard model of particle physics."
"The deeper problem of why the known physics of the standard model does not contribute a much larger energy to
empty space is still not resolved," he said.
Do We Live In A Computer Simulation Created By An Advanced Alien Civilization?
The captivating idea that we might be living in 3 dimensional holographic simulation has been put forward by various scientists.
We will explore this mind-boggling idea further and examine some intriguing questions.
If we suspect that we are programmed beings living inside a simulation is there any way for us to find out if this is true?
Is it possible to change the outcome of this virtual game?
Death Is Just An Illusion:
We Continue To Live In A Parallel Universe
For as long as anyone can remember philosophers, scientists and religious men have pondered what happens after death.
Is there life after death, or do we just vanish into the great unknown?
There is also a possibility there is no such thing as what we usually define as death.
A new scientific theory suggests that death is not the terminal event we think.
Girl Who Can Start Fire With Her Brain Mystifies Scientists
Many think this young girl has supernatural abilities and scientists are puzzled by what she has accomplished so far.
She is now being called a global scientific phenomenon.
According to the family, their 11-year-old daughter has a bizarre ability to set things aflame by just being near them.
Is A New Race Of Super Earthlings Being Born
Or Is This The End Of The Human Race? - Scientists Ask
Scientists have made an unexpected and unsettling discovery - a large number of new and previously unseen mutations have been detected among humans.
There are those who suggest that there will soon be fantastic X-men among humans. These super earthlings do not come out of secret laboratories,
as in famous blockbuster movies, but are born naturally. Other scientists are less optimistic and consider the unforeseen development can to lead to
unknown changes in the human body.
Several "God Spots" Are Responsible For Spirituality
Spirituality plays an important part in many peoples' daily life.
For years scientists have wondered whether there is a particular place in the brain, a so-called "God spot" that is responsible for spirituality.
What mechanism does determine why a person is more spiritual than others?
Our Brains Wired Like The Checkerboard Streets Of New York City!
The brain appears to be wired more like the checkerboard streets of New York City than the curvy lanes of Columbia, Md., suggests a new brain imaging study.
The most detailed images, to date, reveal a pervasive 3D grid structure with no diagonals, say scientists funded by the National Institutes of Health.
Mysterious Brain Of Daniel Tammet - A Scientific Rosetta Stone
Daniel Tammet has one of the most extraordinary brains on Earth!
There are still many things scientists do not know about his condition and mysterious brain.
Daniel Tammet may very well be a scientific Rosetta stone, a key to understanding our mysterious brain...
Entering The Worlds Of Moving Holograms
Moving holograms have long been considered science fiction, but now with new technology emerging you will soon be able to see how holograms
do almost everything, from watching TV, playing chess, walking the dog or even talking to you, giving you advice.
Holographic technology is not as new as many people think. The first holograms were invented by Dennis Gabor in 1947. He was trying to find
a method for improving the resolution of electron microscopes.