The scientists used a mathematical tool called out-of-time-order correlators, or OTOCs, which are considered a measure of quantum chaos. OTOCs were invented 55 years ago to calculate how electrons in superconductors are affected by disturbances caused by impurities. This influence is similar to the “butterfly flapping effect” that mathematician Edward Lorenz used to illustrate chaos … Read more
Experts analyzed data from 429 people aged 18 to 70 years. Respondents reported how old they felt, how often they didn’t get enough sleep in the past month, and how sleepy they were. It turned out that every night of poor sleep made people feel 0.23 years older. The researchers also conducted an experiment with … Read more
The supply contract was concluded on a take-or-pay basis, but current spot fuel prices in Europe are significantly lower than those obtained from the terms of the contract with Gazprom. It was not possible to reach an agreement with the supplier to bring the terms of the contract into reality, so the Greek company decided … Read more