Thursday, August 24, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

How to create objects inside black holes by outside operators

An anonymous reader has encouraged me to write this short review that I wanted to write for a few days.



Schrödinger's cat is jumping to a black hole. Will it be reincarnated as Heisenberg's German shepherd?

Recall that Kyriakos Papadodimas of CERN – whom I remember as a very bright Harvard grad student – is one of the folks who have, in my humble opinion, understood the lessons from the last two decades of the research of string theory and quantum gravity and their implications for the black hole interior and its (incomplete) independence from the exterior world. In particular, he and Suvrat Raju have written papers analyzing how the local field operators seem to be approximately embedded into Hilbert spaces including finitely many black hole microstates. One of the surprising lessons was that the local operators, especially those inside the black holes, must be embedded in a space-dependent way.

Days ago, Kyriakos submitted his new, 56-page-long paper:

A class of non-equilibrium states and the black hole interior.
He is proposing a simple Ansatz for states of a black hole that don't quite look like a black hole with the empty interior. Instead, some objects are created inside the black hole. And he can create these objects just with the help of some operators that are naturally outside the black hole – specifically, using operators that have a simple enough form in the CFT description of the AdS/CFT correspondence.

Wednesday, August 23, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Quanta Magazine's dirty political propaganda

Based on my experience with similar left-wing activist websites, I believe there is a high probability that my comment under a disgusting Quanta Magazine article

A Physicist Who Models ISIS and the Alt-Right
by Juan Cristóbal Cobo will be censored. So I am going to post a copy here.

This article is a despicable pile of trash.

Before 1989, we were exposed to the communist propaganda. Folks like Václav Havel were periodically presented as "the same" as the Nazis, some links of Havel's relatives to the fascist regime were totally invented, others were blown out of any proportion. All of this stuff was driven by the ideological agenda.

Tuesday, August 22, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

An auction: prophetic Einstein's letter slamming Chamberlain's appeasement

I wouldn't claim to agree with all Einstein's political views – in particular, he was a leftist when it came to many issues – but it's still plausible that I would agree with "his side" in most of the actual conflicts he has fought.

The Express just revealed some cool newly surfaced letter:

Albert Einstein letter slamming Neville Chamberlain for appeasing Hitler emerges for sale
At an auction site, you may buy a remarkable letter by Einstein for $25,000, unless someone offers more – so far there are no bids.



I killed Einstein, Gentlemen, a 1969 (post-occupation but filmed already from 1968) Czechoslovak comedy with some time travel. To retroactively prevent the already-real Bomb G that makes women hairy, they plan an expedition to Prague in 1911 where Einstein discovered some prerequisites for the bomb. If you speak neither Czech nor Spanish, you won't understand much. ;-) Note that e.g. at 9:35, they were already taking selfies using a selfie stick in the late 1960s – a Czech invention. ;-)

In October 1938, ten days after Britain and France betrayed Czechoslovakia, Einstein (who was at Princeton) wrote a German letter to his old friend from the patent office, Michele Besso – you must remember him from the National Geographic "Genius" series. It's the same Besso whose death was downplayed by Einstein's famous eternalist quote "People like us, who believe in physics, know that the distinction between past, present and future is only a stubbornly persistent illusion." ;-)

Soldiers should be replaced with robots

Elon Musk along with some 100+ assistants – such as Lisa Randall, Stephen Hawking, Frank Wilczek, Max Tegmark, Noam Chomsky, Steve Wozniak – have sent an open letter to the United Nations

AUTONOMOUS WEAPONS: AN OPEN LETTER FROM AI & ROBOTICS RESEARCHERS
demanding a ban on the killer robots, machines that are controlled by autonomous programs capable of killing the people. This technology is bound to start an arms race – like the two previous revolutions, gunpowder and nuclear bombs – and that's bad for everyone.



Except that it's not bad.

Civilized countries deal with lots of trivial armed enemies such as Daesh which could be easily defeated but no one really wants to do that. Some of the people who could fight Daesh are actually its allies. But even among those who aren't the allies of Daesh, no one really wants to sacrifice the lives of our soldiers in order to kill some pretty much irrelevant savages and bigots. The value of a Western soldier is several million dollars while the Daesh warrior is cheaper by many orders of magnitude. You surely don't want to sacrifice your boys on the man-against-man basis.

Monday, August 21, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Fraternal help 1968: an anniversary

Even the American Thinker noticed that exactly 49 years ago, early in the morning of August 21st, 1968, 200,000 troops from 5 countries of the Warsaw Pact invaded Czechoslovakia.



If you don't know much but you're slightly interested, I recommend you to watch this 48-minute (ex-Soviet Georgian!) video about the events. Just to be sure. Czechia and mostly Slovakia have been parts of the Western civilization – through the Holy Roman Empire and the Austrian Empire - for some 1,000 years. This country that has belonged to Western Europe politically nevertheless fell into the Soviet sphere of influence after 1945, partly due to the betrayal by France and Britain in 1938, partly due to our gratitude to the Soviet army that sacrificed a lot of lives, and partly because of the unstoppable growth of the communist movement in much of Europe.

Sunday, August 20, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

A funny Czech reaction to the anti-Confederate cultural genocide in the U.S.

Most Czech pundits and media are surprised by the neo-Marxist habit of tearing down of the Confederate statues in recent days. Iconoclasm is something that we remember well from the Nazi era and the communist era – and indeed, from the post-communist era, too. The far left is trying to rewrite the history and frame the U.S. president as a Ku-Klux-Klan boss of a sort and all these things are just bizarre.



Let me pick a text by George X. Doležal – who is paid for somewhat funny, somewhat provocative works in Reflex, a mainstream journal.

Let's tear down the statues of Charles IV!
George X. Doležal, August 20th (satire)

After a mass demolition of the statues of the national heroes from the Confederate era which took place in the U.S. in recent days, this remarkable neo-Marxist happening could become a European habit, too. At least the Czech Republic should get inspired by the U.S. authorities and start to remove the statues of the great Czechs who must be disavowed today, in the name of the political correctness.

Saturday, August 19, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Bank of Korea is taking over Bitcoin Cash

...at least, that's a result of your humble correspondent's inference...

Three weeks ago, I discussed the split of the Bitcoin to the new Bitcoin (BTC) and Bitcoin Cash (BCH). For some time, the prices were around $4,000 and $300 or so, plus minus 30%.

But two days ago, BCH began to skyrocket. It reached $1,000 hours ago. The timing of this growth was attributed to the first 8 MB block mined by BCH (BTC only mines 1 MB blocks) and the fact that the BCH mining became more profitable than the BTC mining.

On Friday, the trading volumes of BCH actually trumped those of the "main" BTC Bitcoin, $4 billion to $3 billion a day. Moreover, it's been known that most of the BCH trade was the trade BCH against SKW, the South Korean won, and it occurred at Korean exchanges.

Friday, August 18, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Religion of peace enriches Catalonia, Finland

With some compensation, Muslims should be banned from vans, knives in the public

Technical: I added two clever lines in a Disqus Javascript code which allowed me to redirect the whole blog to HTTPS without separating the discussions. Please let me know if you face any problems, broken widgets etc.
I am sure that many of you have undergone a similar emotional evolution as your humble correspondent. A few years ago, I would be shocked, deeply hurt when a terrorist attack took place. However, one simply gets used to any events that are occurring sufficiently frequently. What's new about the 2017 Barcelona attacks and the 2017 Turku attack is perhaps just the "new" European countries, namely Spain and Finland, respectively, but otherwise the sad events look like business-as-usual.

While Muslims represent about 4% of Spaniards, they are 8% in Catalonia. So it makes sense that the first attacks in Spain take place in Catalonia.

In downtown Turku – where most of Finland's Muslims live (so it makes sense, too; note that only 1% of Finns are Muslims) – one person died and six were injured after a person screamed Allahu akbar. In Barcelona, a white van rented by a man of Moroccan ancestry has driven on the sidewalk of La Rambla, a popular tourists' boulevard, and killed 14 people. A few hours later, five Muslims – some of them had fake explosive belts – had to be killed in Cambrills after their Audi A3 tried to overrun pedestrians as well.

Thursday, August 17, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Harlow, Ooguri: entanglement/AdS proof that there are no global symmetries in QG

Daniel Harlow wrote or co-wrote numerous interesting papers about quantum gravity, entanglement, locality, error code correction, weak gravity conjecture etc. within AdS/CFT.

John Preskill has tweeted about an interesting, soon-to-be-published result by Harlow and Hiroši Ooguri:


They seem to make some lore rigorous.

Bitcoin at $100,000 is possible

Bitcoin fans and owners will learn to bribe cryptocurrency critics

A theorist often lacks some genuine feelings associated with a certain real condition or activity. In particular, when you own a not quite negligible fraction of a Bitcoin, you may see how you actually want to behave and what many other owners of Bitcoins will do.

If you can afford to lose the value but you see the genuine chance for many doublings of the Bitcoin's value in the future, you are inclined to keep it – and not convert it to the real world currencies.


Exactly one month ago, on July 17th, BTCUSD bounced from lows around $1,800 and it went to $2,150 or so. Those values looked incredible but in the following month, as we can see today, the price has doubled again. Exactly. One Bitcoin is worth some $4,300 or CZK 96,000. You may watch the prices and capitalizations of top 1,000 cryptocurrencies (by capitalization) if you click at this sentence.

Wednesday, August 16, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Czechs amazed by a PC lawsuit against a Czech Swedish writer

Czechia's economy grew by impressive 4.5% yoy and 2.3% qoq in Q2 of 2017, brutally beating estimates. Donald Trump made a speech about Charlottesville that has offended many – surely not me. Most importantly, I agree that both sides, "alt right" and "alt left", need to calm down in Virginia and elsewhere in the U.S. And yes, the removal of Confederate heroes' statues is bound to produce lots of understandable anger.

But I want to mention a seemingly irrelevant story about a lawsuit. Rossana Dinamarca is a Swedish student (a very old one for a student, she was born in 1974) who came to Sweden from Chile. She is a lawmaker for the Left Party which is, despite the impressively general name, a tiny communist party that has never made it to the Swedish government.



Swedish newspapers and their Czech counterparts such as iDNES and Echo24 informed us about a lawsuit that Dinamarca filed against Ms Kateřina Janouchová (picture above), a Prague-born writer (in Swedish).

Tuesday, August 15, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

A future proof of \(P=NP\) or \(P\neq NP\) may be far-reaching or not so much

A few days ago, Norbert Blum, a professor (and a chair) from Bonn, the ex-capital of West Germany (picture) whose publication record looks good released the preprint

A Solution of the P versus NP Problem
claiming to contain a proof that \(P\neq NP\).

John Baez and Alon Amit, a brilliant mathematician at Quora, have offered their opinions. The preprint isn't "self-evidently wrong" according to some basic "smell tests" that may be used to "sniff" for wrong proofs of this kind, Baez concluded. In fact, a bunch of computer scientists has so far reacted in the same way: it looks rather credible so far. So it's good enough news for Blum.

At the same moment, neither Baez nor Amit could tell us "I have found a clear mistake" or, on the contrary, "I have verified the proof and joined those who claim that a proof has been found". Francis Villatoro, Gary Knife, and Scott Aaronson claim to know about incorrect statements "proven" at places in Blum's proof, however, although they don't know where's the error in Blum's proof. Sadly for Scott Aaronson who offers you $200,000 if he is wrong, he was mindlessly building on a statement by Luca Trevinsan who has already renounced his own criticism (he misunderstood what Andreev's function was).

James Damore: aftermath

I find Edwin's ideas worth listening to (I am sure he is annoyed by calm comments about "worth" and "blah blah" and would prefer warmer ones, so yes, I love you, Edwin LOL) which is why I have watched this 80-minute video recommended by Edwin:



Prof Jordan Peterson and Stefan Molyneux (both from Canada) are two main individualist YouTube pundits who have previously interviewed James Damore, the former $162,000-a-year Senior Google engineer who became a hero of freedom. So in this discussion, they talked to each other. They covered a lot of ground. You may see that their thinking and values are close enough to each other. But you may still see that they're individualist and they want similar audiences to dedicate time to their videos, so to some extent, this insightful debate still sounds like a competition of a sort.

Saturday, August 12, 2017 ... Français/Deutsch/Español/Česky/Japanese/Related posts from blogosphere

Arctic mechanism: a derivation of the multiple point criticality principle?

One of the ideas I found irresistible in my research during the last 3 weeks was the multiple point criticality principle mentioned in a recent blog post about a Shiu-Hamada paper.



Froggatt's and Nielsen's and Donald Bennett's multiple point criticality principle says that the parameters of quantum field theory are chosen on the boundaries of a maximum number of phases – i.e. so that something maximally special seems to happen over there.

This principle is supported by a reasonably impressive prediction of the fine-structure constant, the top quark mass, the Higgs boson mass, and perhaps the neutrino masses and/or the cosmological constant related to them.

Czech trams in Pyongyang

Tough words directed against North Korea have been a pleasant distraction for Donald Trump because the negative attitudes towards North Korea seem to be uncontroversial in the U.S. and beyond. There's a problem: North Korea may hypothetically erase several cities from the map but no one seems to care.



Americans generally support a strike against North Korea. But do they know where the country is located? That's what the folks at the Hollywood Boulevard, a major avenue in L.A., were asked. The answers were all over the map, literally, but the consensus seems to be that North Korea is in Northeastern Canada. Prepare your bunkers, Mr Kim IV Trudeau!