CR4® - The Engineer's Place for News and Discussion®


Previous in Forum: From Floppy Disks to Data Centers: The White House Brings in Tech Titans to Reva   Next in Forum: Need Help Investigating a New Combustion Engine Technology
Close
Close
Close
12 comments
Guru
CR4 Admins - CR4 Moderator - CR4 Moderator United States - Member - New Member Popular Science - Cosmology - New Member Technical Fields - Education - New Member

Join Date: Jan 2014
Location: East Greenbush, NY
Posts: 755
Good Answers: 14

Majorana Fermion Discovered

08/01/2017 8:16 AM

Research at Stanford discovered evidence for the Majorana fermion, a particle that is its own antiparticle. No immediate practical use for this knowledge, but the researchers say it could advance quantum computing in the future.

“Our team predicted exactly where to find the Majorana fermion and what to look for as its ‘smoking gun’ experimental signature,” said Zhang, a theoretical physicist and one of the senior authors of the research paper. “This discovery concludes one of the most intensive searches in fundamental physics, which spanned exactly 80 years.”

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 13882
Good Answers: 155
#1

Re: Majorana Fermion Discovered

08/01/2017 10:14 AM

That is too bizarre for me to get my head around. Its own anti-particle?

How long is the half-life? About 10-3 femtoseconds or less?

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru
Hobbies - Musician - Engineering Fields - Chemical Engineering - New Member Engineering Fields - Control Engineering - New Member Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jan 2007
Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis)
Posts: 3990
Good Answers: 177
#2
In reply to #1

Re: Majorana Fermion Discovered

08/01/2017 10:36 AM

And where does it fit in the standard model?

__________________
"Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
Register to Reply
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 13882
Good Answers: 155
#3
In reply to #2

Re: Majorana Fermion Discovered

08/01/2017 10:42 AM

Probably somewhere off the page, or on the back of the page, I suspect.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 19472
Good Answers: 1141
#5
In reply to #2

Re: Majorana Fermion Discovered

08/01/2017 11:06 AM

It's in the Fermions...just pencil it in for now....

..."The Standard Model includes 12 elementary particles of spin12 known as fermions. According to the spin-statistics theorem, fermions respect the Pauli exclusion principle. Each fermion has a corresponding antiparticle.

The fermions of the Standard Model are classified according to how they interact (or equivalently, by what charges they carry). There are six quarks (up, down, charm, strange, top, bottom), and six leptons (electron, electron neutrino, muon, muon neutrino, tau, tau neutrino). Pairs from each classification are grouped together to form a generation, with corresponding particles exhibiting similar physical behavior (see table).

The defining property of the quarks is that they carry color charge, and hence, interact via the strong interaction. A phenomenon called color confinement results in quarks being very strongly bound to one another, forming color-neutral composite particles (hadrons) containing either a quark and an antiquark (mesons) or three quarks (baryons). The familiar proton and neutron are the two baryons having the smallest mass. Quarks also carry electric charge and weak isospin. Hence, they interact with other fermions both electromagnetically and via the weak interaction.

The remaining six fermions do not carry colour charge and are called leptons. The three neutrinos do not carry electric charge either, so their motion is directly influenced only by the weak nuclear force, which makes them notoriously difficult to detect. However, by virtue of carrying an electric charge, the electron, muon, and tau all interact electromagnetically.

Each member of a generation has greater mass than the corresponding particles of lower generations. The first generation charged particles do not decay; hence all ordinary (baryonic) matter is made of such particles. Specifically, all atoms consist of electrons orbiting around atomic nuclei, ultimately constituted of up and down quarks. Second and third generation charged particles, on the other hand, decay with very short half lives, and are observed only in very high-energy environments. Neutrinos of all generations also do not decay, and pervade the universe, but rarely interact with baryonic matter."...

https://en.wikipedia.org/wiki/Standard_Model

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru
Hobbies - Musician - Engineering Fields - Chemical Engineering - New Member Engineering Fields - Control Engineering - New Member Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jan 2007
Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis)
Posts: 3990
Good Answers: 177
#6
In reply to #2

Re: Majorana Fermion Discovered

08/01/2017 11:30 AM

Maybe throw it in with the new set proposed to be added:

but

The team has named their new model SMASH for "Standard Model Axion See-saw Higgs portal inflation." The proposed particles are rho (to help explain inflation), the axion (to help explain dark matter) a color triplet fermion and three heavy right-handed neutrinos.

It is still far too early to predict whether the model will be accepted by the physics community, but one thing it has in its favor is that the predictions it makes are clear, which means they can be tested and either proved or disproved. It should be noted that the theory does not include such things as the hierarchy problem or deal with the cosmological constant.

(from https://phys.org/news/2017-02-group-particles-standard-problems.html)

__________________
"Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
Register to Reply
Guru

Join Date: Apr 2010
Posts: 5812
Good Answers: 589
#4

Re: Majorana Fermion Discovered

08/01/2017 10:58 AM

If it's its own antiparticle, does that mean if two come together they will explode?

Register to Reply
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 13882
Good Answers: 155
#7
In reply to #4

Re: Majorana Fermion Discovered

08/01/2017 11:54 AM

It means it self-destructs.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 19472
Good Answers: 1141
#8
In reply to #7

Re: Majorana Fermion Discovered

08/01/2017 12:00 PM

Annihilates...

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 13882
Good Answers: 155
#9
In reply to #8

Re: Majorana Fermion Discovered

08/01/2017 12:07 PM

It does not even get to say "exterminate" in an over-excited tone.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 19472
Good Answers: 1141
#10
In reply to #9

Re: Majorana Fermion Discovered

08/01/2017 1:39 PM

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru
Engineering Fields - Mechanical Engineering - New Member Fans of Old Computers - TRS-80 - New Member Popular Science - Weaponology - New Member Safety - Hazmat - New Member Hobbies - Fishing - New Member United States - Member - New Member

Join Date: Apr 2012
Location: Detroit MI, USA
Posts: 2109
Good Answers: 213
#11

Re: Majorana Fermion Discovered

08/01/2017 3:39 PM

You spelled marijuana wrong and I think it was discovered along time ago...

When you ferment it, you get marijuana wine. Where's the big discovery??

__________________
How we deal with death is at least as important as how we deal with life. --CAPTAIN KIRK, Star Trek II: The Wrath of Khan
Register to Reply Score 1 for Good Answer
Guru
Hobbies - Musician - Engineering Fields - Chemical Engineering - New Member Engineering Fields - Control Engineering - New Member Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jan 2007
Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis)
Posts: 3990
Good Answers: 177
#12
In reply to #11

Re: Majorana Fermion Discovered

08/02/2017 12:01 AM

The drink is bhang, and had some reference on "Bones" (I can't remember if Bones or Angela had tried it before when they were traveling India).

__________________
"Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
Register to Reply
Register to Reply 12 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

James Stewart (4); JPool (1); Mikerho (3); Rixter (1); SolarEagle (3)

Previous in Forum: From Floppy Disks to Data Centers: The White House Brings in Tech Titans to Reva   Next in Forum: Need Help Investigating a New Combustion Engine Technology

Advertisement