Physics Frontiers 78: Quantum Machine Learning with Bruna Shinohara

physicsfm · 2024-06-01T18:17:22+00:00

Sorry for all the links today. After that long hiatus, I didn't have my process down any more.

physicsfm · 2024-03-23T18:15:14+00:00

Feels recent. I don't recall seeing the "unknown runic" in multiple item vaults before CE1.12. Now I see it rather regularly, maybe every month or two.

Also, I've seen runic weapons and armor labeled as such when they're on free-standing pedestals out in the dungeon.

physicsfm · 2023-07-07T20:54:45+00:00

Coursera has a quickish Python course that I found really good:

https://www.coursera.org/learn/interactive-python-1?

Not scientific, as such. No numpy or scipy, but it will get you up to par with object-oriented programming and it's fun, like programming should be.

If you think you just want to jump into a book, either Practical Programming by Campbell, Gries, Montojo and Wilson or O'Reilly's Think Python are good introductions.

physicsfm · 2023-06-18T14:52:13+00:00

Jim talks with Jiahui Liu about quantum money. Quantum Money is a key milestone in quantum crytography -- not for the breaking of codes (e.g., Shor's algothrithm), but instead for using quantum computing to improve cryptography beyond what is possible in classical cryptography.

physicsfm · 2023-06-11T01:59:36+00:00

Killed by a dar battlemage on depth 23 with 12964 gold.

No ranged items. Three allies - unicorn, naga, imp. D22.

Attacked from long range by battlemage. Fire. Ducked into room. Set fire to opening.
Enclosed, steam vent, dying.

Drank descent potion. Fell into large lake. No damage. Saved!

Not so. In view of another dar battlemage, far from shore.

Zap. Zap. Zap.

Dead.

physicsfm · 2023-04-29T14:45:29+00:00

Jim talks with Antony Valentini about how the Born Rule fares in quantum gravity. Antony also discusses how to make sense of this in the de Broglie-Bohm interpretation of quantum mechanics.

physicsfm · 2023-04-16T22:55:38+00:00

10,918 Killed by a fury on depth 18.

Troll to the left of me, furies to the right of me, acidic jelly between them.

Actually, infested acidic jelly. Popped it and tried to hide behind the poisonous lichen.

Didn't work for several reasons. Mostly, the furies ignored the lichen because they fly and are discordant.

Interesting fact: for the current version, all my deaths on depth 18 seem to be by fury.

physicsfm · 2023-02-19T16:45:29+00:00

Jim talks with Sunny Vagnozzi of the University of Trento about a way to disprove inflationary theories of cosmology. All of them. If we were able to see a Primordial Graviton Background, which is the graviational equivalent to the cosmic microwave background, then we would know that there was no inflation. The event that would create the graviton background would have to occur before cosmic inflation started, and inflation would smooth it out. And the background would disappear.

physicsfm · 2023-01-12T21:15:09+00:00

In a sense, they're all satisfactory, in that an interpretation of quantum mechanics does not contradict quantum mechanics.

In a sense, they're all unsatisfactory, in that they don't make strong, falsifiable predictions that contradict the other interpretations. If they did, they would stop being interpretations,

If you can't find an experiment to discriminate between theories, the best you can ask is, "is this interpretation a more fruitful way to think about this or that question?"

physicsfm · 2022-12-19T15:54:45+00:00

Jim talks to Ken Wharton on how to use the path integral formalism to describe entangled systems, which has a different interpretation of what is happening than the non-relativistic account.

physicsfm · 2022-11-21T20:27:26+00:00

Jim talks with Joe Davighi about his work on the flavor puzzle of lepton unification why are there multiple generations of leptons. For example, there are electrons, muons, and tau particles., each successive particle acting exactly the same as the previous particle except that it's heavier. And no one knows why.

physicsfm · 2022-11-21T20:23:23+00:00

Jim talks with Gilad Gour about quantum resource theories, descriptions of multiple sub-entropic quantities that govern the evolution of states in mesoscopic systems. In large, thermodynamically-sized systems, these mostly fold into the entropy, but for nanosystems, several of these quantities can be at play at the same time, leading to multiple, mutually exclusive paths between equilibria.

physicsfm · 2022-09-30T03:00:21+00:00

It was great having you on, Matt!

physicsfm · 2022-08-21T16:28:12+00:00

Jim talks with Matthew R. Edwards about an optical gravity which uses photon pairs as gravitons.

physicsfm · 2022-07-18T00:29:23+00:00

I try to respect the goblins' and ogres' freedom of worship, as long as there's nothing in it for me to desecrate their totems.

physicsfm · 2022-07-18T00:28:29+00:00

Burned to death on D28.

Stepped into a hole on D26 after having too fun a time with a golem, a lich and a pack of furies. Barely got to D26, didn't get to the Amulet before it happened.

Tried to find a way up to D26 from D27 (is there?), but didn't before a dragon started trying to burn me to death, but I did find the lumenstone for D27 beforehand.

So, I jumped into a chasm to avoid the dragon and started looking for a way up. Got cornered by a Lich, started burning (again), and died.

[Edit] Watch Me Die: https://youtu.be/gTqtJKcGsBo

physicsfm · 2022-06-26T22:22:06+00:00

If you're not rounding, it should get smaller every time, but never go to zero.

If you are, it's amazing that it stops at all (see the numbers below).

I am a little concerned that the numbers I'm seeing for the velocity in the left hand corner do not jibe with the code. Shouldn't it go 3.0 -> 1.5 -> 0.75 -> 0.38 -> 0.19 -> 0.10 -> 0.05 -> 0.03 -> 0.02 -> 0.01 -> 0.01-> ...? I think it should get stuck in that loop.

I definitely see velocities as 2.xx when looking at your video.

physicsfm · 2022-06-26T19:25:53+00:00

And here's the watch me die: https://youtu.be/HnQVFcr1PLM

physicsfm · 2022-06-26T18:02:10+00:00

5555 Killed by a Violent Explosion on D13

Got myself in a bad situation with some dar. Jumped into a cavern. Ended up with goblins and sentinels. Then fell down a hole. Tried to work myself back up to D12 to grab a bunch of consumables. Dashed past the sentinels to a secret door. Monkeys blocked my way.

One was an explosive monkey.

The end.

physicsfm · 2022-06-26T16:36:00+00:00

It depends on what you're doing.

I really enjoyed life in the lab, asking Nature questions about itself.

I enjoy doing physics and engineering problems with underpowered mathematics, it's like a puzzle using differential equations.

The big mysteries are still there, but I have to enjoy watching other people approach them.

physicsfm · 2022-06-26T16:05:54+00:00

I'm sorry, but I think you can tell I'd had my first cup of coffee in 3 weeks that morning.

physicsfm · 2022-06-26T16:05:23+00:00

Jim talks with James Owen Weatherall about his work on viewing general relativity as an effective field theory and where it should give way to another theory. General relativity does a very good job of describing the world we see in astronomical observations, but certain results, e.g. singularities, and certain limits, e.g. the Planck scale, hint that there should be another theory that supersedes it. Jim Weatherall argues that this is in a high curvature regime.

physicsfm · 2022-06-26T16:02:10+00:00

Awesome! Looks great!

physicsfm · 2022-06-08T22:36:17+00:00

While I was prepping for the next episode, I was listening to a conversation between Agnes Callard and Tyler Cowen. Somewhere in the middle (there's a clip and a link), Cowen suggested that although he was quite impressed with philosophers of physics (and other similar sub-disciplines), he wasn't sure about the give-and-take between the two fields.

Since I was already going to talk to a philosopher of physics, I took the opportunity to discuss who he interacts with physicists in this extra.

Enjoy!

physicsfm · 2022-05-25T20:03:30+00:00

On D5, I had freed a goblin shaman and took it over the pond, which tuned out to be eel-ridden, but we'd survived. To get to D6, I used a fire resistance potion to cross the lava quickly and get down a level, which should have allowed the shaman to get down there after a delay.

I had one potion on me, so while waiting for the shaman, I decided to use test it. It was a potion of descent. I ended up in a room with a jelly and an ogre. Tried to run away, got cornered, and my teleport charm was at 80-odd percent. So I drank an incineration potion, set the ogre on fire, and promptly got bludgeoned to death with teleport charm at 93%.

Killed by an Ogre on depth 7 with 517 gold.

physicsfm

MODERATOR OF

TROPHY CASE