Comprehensive coverage

Noam Chai

A special article in honor of Hebrew new year summarizing the creation of the world through the lens of science
On May 10, three lectures in the field of quantum will be delivered to the general public, zoomed and free of charge. The event is being held in honor of World Quantum Day under the auspices of the Center for Quantum Information at the Hebrew University. No need to register in advance.
In an article published in the magazine Nature Physics, a team of researchers from Britain, the USA, Germany and Australia demonstrated for the first time the two cracks experiment in the timeline. Instead of spatial dispersion on a screen, the temporal crack created a dispersion in the light spectrum, and from the combination of another crack an interference pattern similar to the spatial pattern from the classic experiment was created. The experiment opens a window for the construction of time-varying optical instruments in a reliable and stable manner.
In recent years, physicists from around the world have been discussing the construction of a muon accelerator instead of other conventional accelerators based on protons or electrons. Such an accelerator has clear advantages in discovering new physics, but its construction is accompanied by many technological challenges. In this article I will review the words of Prof. Nima Arkani-Hamed from the Institute for Advanced Studies in Princeton on the need to build such an accelerator.
Has a room temperature conductor finally been discovered? very doubtful The scientific community suspects the reliability of the findings and the reason for this is clear, the researcher who signed the disclosure claimed this in the past and was repelled by his colleagues claiming errors in the experiment.
Led by doctoral student Mamon Safdi and Professor Yaron Bromberg from the Hebrew University, an experiment was carried out that demonstrates for the first time a substantial advantage in characterizing materials using entangled photons over classical light. The experiment published in the prestigious journal Nature Physics measured the light from entangled photons that were backscattered from a non-static scatterer. The results of the experiment showed that entangled photons reduce the measurement error by four times than non-entangled light, thus breaking the Kramer-Rao barrier for classical light.
A team of researchers from Harvard University, MIT and Calcutta in collaboration with Google successfully simulated a traversable wormhole with the help of a quantum computer. The experiment performed on Google's quantum processor demonstrated the passage of information in the interlaced system. According to the principle of holography, the physics demonstrated in the experiment is the same as that of particles passing through wormholes. Although it was conducted on only nine qubits, the experiment is of great importance because it illustrates for the first time the possibility of testing quantum gravity with the help of entangled systems.
The lecture will be free. The date of the lecture will be announced, those interested are invited to register
Inspired by the winners of the 2022 Nobel Prize in Physics, we will discuss Bell's theorem without introducing formulas and inequalities. In this article we will illustrate how experiments with entangled particles contradict the assumption that there are hidden variables and that quantum mechanics is indeed reliable.
A group of researchers from Nanjing University and the University of Science and Technology of China developed an experiment that tested a model for dark energy. The results of the experiment ruled out the model in question that predicted a fundamental fifth force in nature.
Physicist Hikida from the University of Tokyo and his colleagues developed the dual model for Einstein's theory of gravity in three-dimensional de Sitter space. This is a significant step towards a model that will faithfully describe nature, i.e. the physics of quantum gravity under an expanding universe with a positive cosmological constant.
The new launch of the hadron accelerator in Geneva marks a decade since the discovery of the Higgs and opens a new decade of equally fascinating research. In this article we will review what we discovered and what questions remain open.
The human DNA molecule contains about three billion bases and replicates every day about two trillion times. For the cellular structure to be preserved, the replication process must be incredibly precise, but at the same time, the appearance of mutations shows that the process is not immune to errors. With the help of computer simulations, physicists and chemists from the University of Surrey In England they showed that errors in replication may occur due to quantum tunneling. 
Following the new Marvel movie "Doctor Strange in the Dimensions of Madness" which takes place in the Multiverse, I decided to break down in a short article the meaning of parallel universes and the reasons to believe in their existence. In my opinion, science surpasses any imagination, including Marvel's imagination.
A black hole is a mysterious celestial body. Einstein's theory of relativity taught us a lot about black holes, but many question marks remain about what goes on inside. It is likely that the picture will become clearer as soon as a quantum theory of gravity is discovered, but until then we will content ourselves with the collision of quantum mechanics and general relativity around the event horizon. In this chapter we will discuss the paradox that arose from this collision, the multitude of published solutions and the fascinating developments of the past two years
The Italian physicist Evangelista Torricelli was born in Rome to a humble and poor family. Although luck was not in his favor, his hard work paid off. He managed to reach the top of the Italian Academy and worked with the great scientist of the time, Galileo Galilei. His curiosity led his country, and then the entire world, towards a solution to a riddle that is more than two thousand years old - what is the nature of the vacuum? Torricelli's way of solving the problem was based on a simple experiment that contained a flask, a glass tube and mercury.
Researchers from Prague published in the prestigious journal Physical Review Letters an alternative model for dark matter based on MOND that succeeds in predicting the existence of the cosmic background radiation. This is a significant achievement that the MOND model has so far failed to explain, and for this it has received most of the criticism against it. the price? Two new fields in Teva. The authors of the article hope in the future to prove its existence with the help of the model's unique fingerprints on the gravitational waves.
The Nobel Prize in Physics was awarded this year to Giorgio LaFerrisi for his scientific contribution in understanding complex systems alongside climate researchers. The prize committee decided to focus on the solution he proposed to the spin-glass problem on the grounds that this model is able to explain many phenomena outside the physics of materials. What is a spin-glass phase and what is Frizi's contribution to the theory?
In 1990 Penrose and Moroff hypothesized that the source of consciousness is in the fractal structure of the microtubules. The movement of the particles on the fractal is apparently explained with the help of the laws of quantum mechanics but this has never been proven. Now evidence of similar systems in the laboratory strengthens the hypothesis that the fractal forces the particles moving on it to obey the laws of quantum mechanics, but is this the cause of consciousness?
Where is the quantum in quantum mechanics? It turns out that nature is not discrete at all, as long as there is nothing to force it to be so
The most famous quantum equation was published in 1926 on just two pages. What does she describe and how did Schrödinger think of her?
What is spin? And where did the idea come from? This is a story about small steps, witty guesses and a fight against giants
Every week we will delve deeper into a physical idea known in popular literature and bridge the gap between what is shown in the media and what science really states. This time we will start with wave-particle duality, an elusive concept that sometimes raises more questions than answers, but in truth has long ceased to worry scientists
The XNUMXs were the years when quantum theory entered the mainstream of physics and brought science and technology to new heights
Led by researchers from the Institute of Physics at Princeton University, an initial discovery has been published that strengthens the controversial hypothesis that the electron is made up of two elementary particles: one carries a negative electric charge and the other the electron's spin. If the interpretation is indeed correct, the assumption that is more than a century old may be erased and make waves in the scientific community.
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