Sometimes the discovery of new physics demands insane levels of energy. Big machines. Fancy equipment. Countless hours of sifting through reams of data.
And then sometimes the right combination of materials can open a doorway to invisible realms in a space little bigger than a tabletop.
Take this new kind of relative to the Higgs boson, for example. It was found lurking in a room temperature chunk of layered tellurium crystals. Unlike its famous cousin, it didn't take years of smashing up particles to spot it, either. Just a clever use of some lasers and a trick for unweaving their photon's quantum properties.
"It's not every day you find a new particle sitting on your tabletop," saysKenneth Burch, a Boston College physicist and the lead co-author of the study announcing the discovery of the particle.
Burch and his colleagues caught sight of what's known as an axial Higgs mode, a quantum wiggle that technically qualifies as a new kind of particle.
Like so many discoveries in quantum physics, observing theoretical quantum behaviors in action get us closer to uncovering potential cracks in the Standard Model and even helps us hone in on solving some of the remaining big mysteries.
"The detection of the axial Higgs was predicted in high-energy particle physics to explain dark matter," says Burch.
"However, it has never been observed. Its appearance in a condensed matter system was completely surprising and heralds the discovery of a new broken symmetry state that had not been predicted."
It's been 10 years since the Higgs boson was formally identified amid the carnage of particle collisions by CERN researchers. This not only ended the hunt for the particle but loosely closed the final box in the Standard Model the zoo of fundamental particles making up nature's complement of bricks and mortar.
With the Higgs field's discovery, we could, at last, confirm our understanding of how components of the model gained mass while at rest. It was a huge win for physics, one we're still using to understand the inner mechanics of matter.
While any single Higgs particle exists for barely a fraction of a second, it's a particle in the truest sense of the word, blinking briefly into reality as a discrete excitation in a quantum field.
There are, however, other circumstances in which particles can bestow mass. A break in the collective behavior of a surge of electrons called a charge density wave, for example, would do the trick.
This 'Frankenstein's monster' version of Higgs, called a Higgs mode, can also appear with traits that aren't seen in its less patchwork cousin, such as a finite degree of angular momentum (or spin).
A spin-1 or axial Higgs mode not only does a similar job to the Higgs boson under very specific circumstances, it (and quasiparticles like it) could provide interesting grounds for studying the shadowy mass of dark matter.
As a quasiparticle, the axial Higgs mode can only be seen emerging from the collective behaviors of a crowd. Spotting it requires knowing its signature amid a wash of quantum waves and then having a way to sift it out of the chaos.
By sending perfectly coherent beams of light from two lasers through such material and then watching for telltale patterns in their alignment, Burch and his team uncovered the echo of an axial Higgs mode in layers of rare-earth tritelluride.
"Unlike the extreme conditions typically required to observe new particles, this was done at room temperature in a table top experiment where we achieve quantum control of the mode by just changing the polarization of light," says Burch.
It's possible there could be plenty of other such particles emerging from the tangle of body parts making up exotic quantum materials. Having a means of easily catching a glimpse of their shadow in the light of a laser could reveal a whole litany of new physics.
This research was published in Nature.
Here is the original post:
Researchers Discovered a New Kind of Higgs Relative in The Unlikeliest of Places - ScienceAlert
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