![]() Signatories promise to outline their internal policies for dealing with manipulated content, and have to show their algorithms used for detecting and moderating deepfakes are trustworthy. The EU updated these guidelines to tackle the rise of fake bots accounts and AI-generated deepfakes too. Other concerns include making data from social media platforms more transparent and available for researchers and supporting the work of fact checkers. Among the options are taking steps to demonetize disinformation businesses should avoid placing ads next to fake news or profiting off the spread of false information online and clearly labeling political advertisements. The code lists a broad set of commitments that signatories can choose to adhere to in the fight against digital fakery. Meta, Twitter, Google, Microsoft and other tech companies and publishers have agreed to fight disinformation online in accordance with the European Commission's latest Code of Practice rules, which were published on Thursday. ![]() Whilst the research is a "pioneering paper", the data is "contradictory and sketchy", he told The Register. ![]() Ulf Leonhardt, a physics professor at the Weizmann Institute of Science, Israel, who is interested in using lasers to reproduce Hawking radiation, agrees. It’s these differences that matter,” she told The Register. “I’m not sure if it can be used to study the information paradox as real black holes evaporate and have entropy, but analogue ones don’t. But it leaves some room for doubt and needs more experiments to confirm if the Hawking radiation here is really from a quantum effect. Weinfurtner says: “It’s a nice and promising experiment - a good step forward. To see the effects of quantum entanglement predicted in Hawking radiation in the superfluid, it must be cooled below 2.7 nanokelvin. The temperature of the background radiation - energy left over from the Big Bang - is about 2.7 kelvin, but the temperature of Hawking radiation is only 1.2 nanokelvin. Hawking radiation has remained elusive so far because any trace gets swamped out by the cosmic microwave background. He can only estimate that the superfluid is only a tiny smidgen above absolute zero (0 kelvin) - the coldest possible temperature. It’s only the phonons - or sound waves - which cause the temperature.” “Temperature is measured as the energy of atoms flying out, but when it’s this cold the atoms don’t move. It’s so cold that you can’t really get an accurate reading of the temperature, Steinhauer told The Register. Steinhauer’s superfluid has the right property to observe Hawking’s radiation: coldness. Silke Weinfurtner, a researcher from the University of Nottingham also working with black hole analogues, believes that Hawking radiation can be produced experimentally, but is unsure if it could be used to study the information paradox.Ī Bose Einstein condensate is a good medium to look for Hawking radiation, she told The Register. There were doubts about if using analogue black holes could result in a deeper understanding of problems such as uniting quantum mechanics to gravity. In 2014, he published a paper – also in Nature Physics – that used a Bose Einstein condensate to reproduce “self-amplifying Hawking radiation” without the entanglement. It’s not the first time that Steinhauer has used a laboratory analogue to investigate Hawking radiation. How close is an analogue black hole to the real thing? The next step, Steinhauer hopes, is to use artificial black holes to tackle larger problems like the information paradox or maybe even quantum gravity.īut, not everybody is convinced. “The entanglement verifies the quantum nature of the Hawking radiation,” the paper said. Phonons that were swept away inside the event horizon had negative energy, whilst its counterpart outside the event horizon has positive energy. If you are travelling in the same direction as a moving sound wave but faster, it looks like the sound wave is going backwards - that can be interpreted as negative frequency and energy,” Steinhauer told The Register. “Imagine the sound waves in Doppler shift. It doesn’t violate the principle of physics, however, as the total energy balances out to zero. Hawking radiation is a quantum fluctuation - a random change where particles are created out of nothing. Phonons equidistant from the event horizon were correlated and had equal and opposite energy, Steinhauer explained. He measured the correlation function - a measure of how the properties of two particles in different positions are related - and found a high correlation for high-energy phonons but low correlation for low-energy phonons. Steinhauer’s results are published in Nature Physics, and show that Hawking radiation is entangled.
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