Simulations of quantum many-body systems are an important goal for nuclear and high-energy physics. Many-body problems involve systems that consist of many microscopic particles interacting at the level of quantum mechanics. They are much more difficult to describe than simple systems with just two particles. This means that even the most powerful conventional computers cannot simulate these problems.
Quantum computing has the potential to address this challenge using an approach called analog quantum simulation. To succeed, these simulations need theoretical approximations of how quantum computers represent many-body systems. In research on this topic, nuclear physicists at the University of Washington developed a new framework to systematically analyze the interplay of these approximations. They showed that the impact of such approximations can be minimized by tuning simulation parameters.
The study is published in the journal Physical Review A.
Superconductivity, which entails an electrical resistance of zero at very low temperatures, is a highly desirable and thus widely studied quantum phenomenon. Typically, this state is known to arise following the formation of bound electron pairs known as Cooper pairs, yet identifying the factors contributing to its emergence in quantum materials has so far proved more challenging.
Researchers at Princeton University, the National High Magnetic Field Laboratory, Beijing Institute of Technology and the University of Zurich recently carried out a study aimed at better understanding the superconductivity observed in CsV₃Sb₅, a superconductor with a Kagome lattice (i.e., in which atoms form a hexagonal pattern that resembles that of Kagome woven baskets).
Their paper, published in Nature Physics, identifies two distinct superconducting regimes in this material, which were found to be linked to different transport and thermodynamic properties.
This is some wild stuff o.o. As much is unknown about this universe I still think this phenomenon is more exterrestial possibly even from the grand architect like god or some alien species that is either moving a black hole spaceship or some sorta wormhole expansion for alien transportation or could be even god due its nature as his vehicle the Ezekiel wheel was spotted near Venus in 2020. Still is an unknown threat whether it is an actual threat is still unknown. If it is a threat theoretically we could evaporate the black hole though but this would require large amounts of energy maybe even Higgs bosons somehow.
A fluffy cluster of stars spilling across the sky may have a secret hidden in its heart: a swarm of over 100 stellar-mass black holes.
The star cluster in question is called Palomar 5. It’s a stellar stream that stretches out across 30,000 light-years, and is located around 80,000 light-years away.
Such globular clusters are often considered ‘fossils’ of the early Universe. They’re very dense and spherical, typically containing roughly 100,000 to 1 million very old stars; some, like NGC 6397, are nearly as old as the Universe itself.
Quantum entanglement is a fundamental phenomenon in nature and one of the most intriguing aspects of quantum mechanics. It describes a correlation between two particles, such that measuring the properties of one instantly reveals those of the other, no matter how far apart they are. This unique property has been harnessed in applications such as quantum computing and quantum communication.
A common method for generating entanglement is through a nonlinear crystal, which produces photon pairs with entangled polarizations via spontaneous parametric down-conversion (SPDC): if one photon is measured to be horizontally polarized, the other will always be vertically polarized, and vice versa.
Meanwhile, metasurfaces—ultrathin optical devices—are known for their ability to encode vast amounts of information, allowing the creation of high-resolution holograms. By combining metasurfaces with nonlinear crystals, researchers can explore a promising approach to enhancing the generation and control of entangled photon states.
A team from Princeton University has successfully used artificial intelligence (AI) to solve equations that control the quantum behavior of individual atoms and molecules to replicate the early stages of ice formation. The simulation shows how water molecules transition into solid ice with quantum accuracy.
Roberto Car, Princeton’s Ralph W. *31 Dornte Professor in Chemistry, who co-pioneered the approach of simulating molecular behaviors based on the underlying quantum laws more than 35 years ago, said, “In a sense, this is like a dream come true. Our hope then was that eventually, we would be able to study systems like this one. Still, it was impossible without further conceptual development, and that development came via a completely different field, that of artificial intelligence and data science.”
Modeling the early stages of freezing water, the ice nucleation process could increase the precision of climate and weather modeling and other processes like flash-freezing food. The new approach could help track the activity of hundreds of thousands of atoms over thousands of times longer periods, albeit still just fractions of a second, than in early studies.
Scientists, for the first time-captured the movements of electrons and nuclei in a molecule after it was excited with light-just by using a high-speed electron camera. They have shown that with ultrafast electron diffraction, it’s possible to follow electronic and nuclear changes while naturally disentangling the two components.
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In this study, scientists from Stanford University were able to see both the exact positions of the atoms and the electronic information at the same time.
What do albatrosses searching for food, stock market fluctuations, and the dispersal patterns of seeds in the wind have in common?
They all exhibit a type of movement pattern called Lévy walk, which is characterized by a flurry of short, localized movements interspersed with occasional, long leaps. For living organisms, this is an optimal strategy for balancing the exploitation of nearby resources with the exploration of new opportunities when the distribution of resources is sparse and unknown.
Originally described in the context of particles drifting through liquid, Lévy walk has been found to accurately describe a very wide range of phenomena, from cold atom dynamics to swarming bacteria. And now, a study published in Complexity has for the first time found Lévy walk in the movements of competing groups of organisms: soccer teams.
Buy me a coffee and support the channel: https://ko-fi.com/jkzero. Part 3 of the groundbreaking but less-known theory of quantum mechanics proposed by Louis de Broglie in 1923. In this video de Broglie’s unification of wave and particles using his matter waves to show that Fermat’s principle of ray optics is equivalent to Maupertuis’ principle for the dynamics of particles. Although incomplete, this corresponds to the early development of de Broglie’s pilot-wave theory.
∘ L. de Broglie, “Ondes et quanta,” Comptes Rendus Hebdomadaires des Séances de l’Aadémie des Sciences (Paris), 177,507 (1923) ∘ L. de Broglie, “Quanta de lumière, diffraction et interférences,” Comptes Rendus Hebdomadaires des Séances de l’Aadémie des Sciences (Paris), 177,548 (1923) ∘ L. de Broglie, “Les quanta, la théorie cinétique des gaz et le principe de Fermat,” Comptes Rendus Hebdomadaires des Séances de l’Aadémie des Sciences (Paris), 177,630 (1923) ∘ F. Grimaldi, “Physico-mathesis de lumine, coloribus et iride aliisque adnexis” (1665) ∘ I. Newton, “Optiks” (1704) ∘ L. de Broglie, “On the Theory of Quanta,” translation of doctoral thesis, Foundation Louis De Broglie (1924) ∘ A. Einstein, “Quantum theory of the monatomic ideal gas, Part II” Sitzungsber. Preuss. Akad. Wiss. 3, (1925)
M. de Broglie, public domain. Diffraction half plane with rays, by MikeRun under CC BY-SA 4.0 Oualidia Lagoon, Morocco via Google Earth. Matter Waves, AT&T Archives and History Center (1961) Francesco Grimaldi, public domain. First edition of Opticks, public domain. Isaac Newton by Sir Godfrey Kneller, public domain. Light refraction, by ajizai, public domain. Interference pattern, by J.S. Diaz (own work) Polarization clamp, by A.Davidhazy under CC BY-SA 4.0 Light bulb through diffraction grating, by R.D. Anderson under CC BY-SA 3.0 Davisson and Germer, public domain. Davisson-Germer Figure 2, public domain. Fifth Solvay Conference, AIP Refraction with soda straw, by Bcrowell under CC BY-SA 1.0 Pierre Louis Moreau de Maupertuis, public domain. P. Langevin, public domain. Peter Debye, AIP Portrait of Erwin Schrodinger, AIP Eels Swimming in Aquarium by M. Ehlers, free use via Pexels https://www.pexels.com/video/eels-swimming-in-aquarium-10106765/
