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(Phys Org2)   A topological Josephson junction can host two zero-energy Majorana bound states at its interfaces if the time reversal symmetry is broken   ( phys.org) divider line
    More: Interesting, Majorana fermions, topological Josephson junction, Quantum field theory, Condensed matter physics, zero-energy Majorana fermions, multiple Andreev reflections, fractional Josephson effect, Majorana bound states  
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847 clicks; posted to Geek » on 23 Jul 2018 at 11:40 AM (3 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



43 Comments     (+0 »)
 
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2018-07-23 10:34:16 AM  
What, the 'Obvious' tag lost in dark matter somewhere?
 
2018-07-23 10:48:45 AM  
Well duh
 
2018-07-23 11:41:02 AM  
So were a dumbing it down for the plebes are we?
 
2018-07-23 11:42:03 AM  
I just learned about that next year, actually.
 
2018-07-23 11:43:58 AM  
That's what she said!
 
2018-07-23 11:45:59 AM  
Well crap, now you tell me.

Posted in 2008. Can someone come get me now?
 
2018-07-23 11:47:35 AM  
I had the worst topology professor ever.  He opened the first class by by silently building a Mobius strip over the course of five minutes, like he was a magician at a children's birthday party.  From that moment on, we hated him.
 
2018-07-23 11:50:09 AM  

Abe Vigoda's Ghost: Well crap, now you tell me.

Posted in 2008. Can someone come get me now?


You're probably better off staying where you are.
 
2018-07-23 11:51:52 AM  
I won't believe this until it's reported in Forbes.
 
2018-07-23 11:52:06 AM  
I'm having trouble replicating those results at the moment.
 
2018-07-23 11:52:07 AM  
If I'm following this right, they are looking at breakdown current using a DC bias voltage to jump an open switch, on a frequency basis.

Nothing in their abstract tells me how they handled the signals-analysis portion or how they are confident they aren't just looking at transient harmonics or filter effects.
 
2018-07-23 11:52:11 AM  

Ker_Thwap: I had the worst topology professor ever.  He opened the first class by by silently building a Mobius strip over the course of five minutes, like he was a magician at a children's birthday party.  From that moment on, we hated him.


See, if a prof had blown a glass Klein bottle in class, I would have stayed for the whole thing.

/not a science major, so it'll probably take at least three readings before I understand TFA
 
2018-07-23 11:55:51 AM  
 
2018-07-23 11:56:31 AM  
What's your function, Josephson junction?
 
2018-07-23 11:57:05 AM  
img.fark.netView Full Size
 
2018-07-23 11:57:55 AM  
Topological Josephson junction , what's your function?
 
2018-07-23 11:58:11 AM  

This text is now purple: If I'm following this right, they are looking at breakdown current using a DC bias voltage to jump an open switch, on a frequency basis.

Nothing in their abstract tells me how they handled the signals-analysis portion or how they are confident they aren't just looking at transient harmonics or filter effects.


They'd have to run these tests hundreds of times at controlled voltages and durations and observe the patterns AFTER the phenomenon had taken place. Then they could re-run the tests using the previous observations as a control.

At best it gives them a way to see if they can reproduce the observation. The observation itself is really only seeing a shadow, not the particle or energy signature itself. So it offers them a contour within which to focus, but is not, in itself, a valid means of measuring the underlying particles let alone the states of them.

As in many things, observing what's missing is the first step. This is tantamount to gravitational lensing leading to the observation that there are planets/suns we can't see. Doesn't mean we can see them now, just that we can acknowledge that there's something there and we know where to look.
 
2018-07-23 12:01:11 PM  
Carbon Based Lifeforms - Erratic Patterns
Youtube VQdaQMdqHIA

https://www.youtube.com/watch?v=gVSc5​i​E5uGc
 
2018-07-23 12:03:35 PM  
[headline]

cdn.drawception.comView Full Size
 
2018-07-23 12:14:42 PM  
K
 
2018-07-23 12:20:12 PM  
img.fark.netView Full Size
 
2018-07-23 12:22:10 PM  
FAKE NEWS!  Those zero-energy Majorana things sound LOW ENERGY to me!  That won't make America great again!!!!  Obama is messing with his time symmetry machine again!
 
2018-07-23 12:41:24 PM  
I think Subby lives in a state where they've legalized Majorana.
 
2018-07-23 12:42:36 PM  
This is the physics that is key to the operation of the Turbo Encabulator.
'Turbo Encabulator' the Original
Youtube Ac7G7xOG2Ag
 
2018-07-23 12:58:27 PM  
I couldn't follow this at all. Could someone hire Sylvester McCoy to explain it? Because it sounds like something out of late 80s Doctor Who.
 
2018-07-23 01:03:22 PM  
Hell, Stevie Wonder could see that...
 
2018-07-23 01:06:56 PM  
That should be obvious to even the most dimwitted individual who holds an advanced degree in hyperbolic topology.

img.fark.netView Full Size
 
2018-07-23 01:13:47 PM  
Huh. I don't often run into something that I read, and think to myself, "...I have no idea what this says, except in very vague terms." That's so cool.
 
2018-07-23 01:49:58 PM  
img.fark.netView Full Size
 
2018-07-23 02:28:33 PM  
But, time doesn't exist at the quantum level and is a product of observation/measurement/entanglement with the observer?

/but what does it MEAN?!
 
2018-07-23 02:43:04 PM  
metvcdn.metv.comView Full Size



"Josephson.... Junction!"
 
2018-07-23 02:48:13 PM  
pbs.twimg.comView Full Size
 
2018-07-23 03:00:59 PM  

AintNoAmoeba: This is the physics that is key to the operation of the Turbo Encabulator.
[Youtube Ac7G7xOG2Ag image 480x360][Youtube-video https://www.youtube.com/embed/Ac7G7xOG​2Ag]


I need to get me some preframbulated amulite.
 
2018-07-23 03:02:50 PM  
img.fark.netView Full Size
 
2018-07-23 04:00:50 PM  
Prof. Proton nods in agreement

img.fark.netView Full Size
 
2018-07-23 04:08:49 PM  

Priapetic: AintNoAmoeba: This is the physics that is key to the operation of the Turbo Encabulator.
[Youtube Ac7G7xOG2Ag image 480x360][Youtube-video https://www.youtube.com/embed/Ac7G7xOG​2Ag]

I need to get me some preframbulated amulite.


Or you can do what I do and just buy regular amulite and postambulate it. Only hard part is the renealing, but a light coating of disinterized graphinal on the (unloaded) rhyoscope gimbal solves most of the deresonance issues you get with the naive methods.
 
2018-07-23 04:39:58 PM  

RoomFullOfMonkeys: Priapetic: AintNoAmoeba: This is the physics that is key to the operation of the Turbo Encabulator.
[Youtube Ac7G7xOG2Ag image 480x360][Youtube-video https://www.youtube.com/embed/Ac7G7xOG​2Ag]

I need to get me some preframbulated amulite.

Or you can do what I do and just buy regular amulite and postambulate it. Only hard part is the renealing, but a light coating of disinterized graphinal on the (unloaded) rhyoscope gimbal solves most of the deresonance issues you get with the naive methods.


Great idea!  I just got a new frambulator (the Model 9000) so I'll have to try this out.  Thanks!
 
2018-07-23 07:00:47 PM  

Rigger1955: I'm having trouble replicating those results at the moment.


i.ytimg.comView Full Size
Try again
 
2018-07-23 08:53:29 PM  

Ker_Thwap: I had the worst topology professor ever.  He opened the first class by by silently building a Mobius strip over the course of five minutes, like he was a magician at a children's birthday party.  From that moment on, we hated him.


I had a professor in graduate topology who was so abstract that midway through the semester when he finally related all the stuff we'd been doing back to a simple map from R^n to R^n, everyone in the class had a "Is THIS what we've been trying to learn all this time?" moment.

(He also didn't proofread his tests and I had to interrupt a *qualifying exam* to point out to him that the problem on it wasn't solvable using the methods he'd taught. Everything he suggested, I jumped to where that method would end up, and they all ended up at the same irreducible that wasn't the answer he thought it would be.)

He was brilliant in the topic (one of the leading figures in the area), but couldn't teach it to graduate students. And he was only the second-worst teacher I had in graduate school.
 
2018-07-23 09:32:17 PM  
Tina Majorino in a bound state?
 
2018-07-23 09:48:37 PM  

Ker_Thwap: I had the worst topology professor ever.  He opened the first class by by silently building a Mobius strip over the course of five minutes, like he was a magician at a children's birthday party.  From that moment on, we hated him.


Building a wibbly-wobbly multicolored Möbius strip is how I learned OpenGL back in the day. Ever since, I've been trying to decide whether a Möbius strip should look more like a circle with a half twist, or a symmetrical figure 8.
 
2018-07-23 09:51:12 PM  

RoomFullOfMonkeys: rhyoscope gimbal


Watch out for gimbal lock.
 
2018-07-24 04:41:52 AM  
Isn't topology the study of this man's career?

https://www.imdb.com/name/nm0867694/

img.fark.netView Full Size


Topol - Fiddler on the Roof (1971) - If I Were a Rich Man
Youtube sjwsICAItgE
 
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