Articles tagged with Theoretical Physics
A new research project aims to control electron flow in semimetals, enabling the development of novel quantum sensors. The TOPREL project will unify theoretical foundations from various physics areas, unleashing the potential of semimetals.
The discovery uses a deep residual neural net trained on real data to uncover warped and stretched images of distant galaxies. The new lenses provide astronomers with targets to measure fundamental properties of the Universe, including the Hubble constant.
Researchers at the University of Innsbruck have successfully entangled two quantum bits coded on a lattice, a crucial resource for quantum computers. This achievement demonstrates key technology for future fault-tolerant quantum computers using lattice surgery.
Researchers from the University of Münster and Düsseldorf provide an in-depth summary of the dynamical density functional theory, a method used to describe interacting particles. The article covers various branches of physics and applications in chemistry, solid state physics, and biophysics.
Researchers describe a physical phenomenon in quantum dots and nanoscale materials using new mathematical formulas. The theories predict electrons interact through two different ways, contributing to the Kondo effect.
Computational simulations reveal that fast walking in narrow corridors creates a higher transmission risk for COVID-19. The shape of the space and airflow patterns behind an individual playing a significant role in this outcome. Children are particularly vulnerable due to the trailing of virus-laden droplets at mouth level.
A team of French scientists has measured the fine-structure constant with unprecedented precision, achieving an accuracy of 11 significant digits. The new value opens up new possibilities for testing the Standard Model's theoretical predictions and shedding light on fundamental questions such as dark matter.
A RUDN University physicist created a software solution to identify the instability regions of black holes, ensuring their mathematical models are physically viable. The approach uses Einstein's equation with added corrections and identifies critical coupling constants that affect model stability.
Researchers have found a way to circumvent a centuries-old theory that allows them to effectively cancel magnetic fields. This breakthrough has practical benefits for various fields like medicine, quantum technology, and neuroscience.
Researchers identify 'dumbbell-like' structures in DNA that link to genes with flexible domains, suggesting a connection between chromosome structure and gene expression. The discovery promises new avenues for research into the secrets of chromosomes.
Researchers discovered pine needle fibers are better at shedding water than circular fibers, retaining less moisture. This evolution is advantageous as it prevents photosynthesis from being blocked by rainwater.
Uber drivers use dynamic price mechanisms to attract more customers and increase revenue. The researchers analyzed price data from 59 cities worldwide and found that the strategy is often used in airports and exhibition centers.
Researchers have experimentally observed effective gravity and two-time physics in ferrofluid-based hyperbolic metamaterials, paving the way for ultra-fast all-optical hypercomputing. This phenomenon has potential applications in time-sensitive fields such as real-time computing and target recognition.
Researchers at Johannes Gutenberg University Mainz engineered a system of magnetic whirls to form a regularly ordered state, akin to crystalization in two dimensions. This breakthrough demonstrates the emergence of a hexatic phase, exhibiting properties similar to hard discs.
A newly published paper introduces a formal theoretical framework from first principles, enabling researchers to predict the fascinating properties of coupled photonic systems before numerically simulating them. The theory allows for the design and prediction of line-shapes with desired near-field and far-field properties.
Researchers developed a framework to analyze entropy in quantum systems, allowing for control over measurements and improving the quality of quantum computer readouts. The study demonstrates the importance of understanding the link between thermodynamics and quantum measurements.
Researchers at Caltech demonstrate a molecular approach to quantum computing that leads to fewer errors, using molecules instead of atoms. The method involves rotating molecules in superposition, allowing for simultaneous correction of orientation and angular momentum shifts, which are prone to causing errors.
Researchers from Russia and Spain propose a new model that describes electron spin behavior in semiconductor nanowires, enabling quick spin flip with controlled electric fields. The findings suggest that optimal interval of control fields is necessary to avoid losing valuable information.
Woss' doctoral thesis on spinning hadrons earned him the 2019 Jefferson Science Associates Thesis Prize. He used lattice QCD to calculate properties of unique particles that can decay into other hadrons with non-zero spin.
Researchers successfully bound two negatively charged electron-like particles using photons, creating a novel form of matter called a Photon Bound Exciton. This discovery enables the creation of novel artificial atoms with designer electronic configurations.
The Center for Theoretical Biological Physics at Rice University has received a five-year extension from the National Science Foundation to pursue research on the intersection of biology and physics. Researchers will continue to use computational analysis and experimental efforts to understand cell behavior and interactions.
Scientists at TU Wien have explained DNA's unusual behavior under tension using a unique combination of civil engineering and physics. The study reveals that DNA can twist more than expected when stretched, with significant consequences for biology and medicine.
Scientists at the University of Queensland have improved the modeling of nuclear structure in francium atoms, allowing for more precise calculations of their magnetic moments. The new method enables uncertainties four times smaller than previous best values, which is crucial for testing fundamental physics theories.
A new study using loop quantum cosmology accounts for two major mysteries of the universe's largest scales. The research resolves two anomalies that have puzzled scientists for years, providing a closer look at the early universe and its primordial features.
Columbia engineers use sophisticated microscopy techniques to directly image localized states in 2D material, yielding single-photon emitters that can be tuned and controlled. This breakthrough enables the creation of quantum optical circuitry for future photonic applications.
Researchers have developed a new laser-based microscope that can resolve the distribution of electrons in crystal lattices with unprecedented resolution. The technique, known as Light Picoscopy, uses powerful laser pulses to drive electrons into fast motion, allowing them to emit radiation that reveals their position within the crystal.
Researchers developed a mathematical model to understand the early phases of COVID-19-like pandemics using respiratory droplet motion and evaporation characteristics. The model estimates how long droplets can survive, how far they can travel, and which size of droplet survives for how long.
Physicists at Heidelberg University have developed a new method to identify effective theories in many-body systems using quantum simulators. The approach allows for the efficient description of complex systems and has been demonstrated experimentally with ultracold rubidium atoms.
Physicists from Martin Luther University Halle-Wittenberg propose a new theory to describe Bose-Einstein condensates, overcoming complex equations and models. The new method simplifies interactions between particles in the condensate, enabling accurate predictions of their behavior.
New research by Brown physicists reveals that impurities can disrupt the order of a system and cause melting to begin before predicted by theory. The findings provide insight into the solid-liquid transition, which remains poorly understood despite being familiar phenomenon.
Igor Mazin creates a quantitative, material-dependent theory for exceptional resilience in Ising superconductors, inspiring new experimental studies and potential applications in quantum computing. Funding of $450,000 from the US Department of the Navy supports this research until April 2023.
Quasiperiodic structures exhibit unique beauty and intriguing physics, but a lack of overarching framework hindered understanding. Researchers establish versatile tools for exploring quantum behavior in diverse quasiperiodic settings, demonstrating the strength of their approach to uncover new physical mechanisms.
JGU is welcoming renowned physicist Gilad Perez to Mainz to tackle the mystery of dark matter. His research aims to identify the nature of dark matter and develop innovative detection methods in the laboratory.
A Cornell University study finds that inquiry-based physics labs, designed to encourage student agency, actually contain gender imbalances and biases when compared to traditional, highly structured labs. The researchers analyzed student behavior in two types of labs and found that men and women take on different roles within groups.
Quantum mechanical simulations show that the Earth's inner core is not as rigid as thought, with a lower iron viscosity than previously predicted. This suggests that plastic flow of iron might contribute to seismic anisotropy and the inner core's alignment.
Dr. Andrzej Dragan and Prof. Artur Ekert propose that the features of quantum mechanics can be explained within the framework of special theory of relativity. They show that superluminal solutions naturally lead to non-deterministic events, multiple trajectories, and probability amplitudes, phenomena associated with quantum mechanics.
Experiments on a simple model for granular cliffs reveal the mechanism by which these cliffs collapse and create large, tsunami-like waves known as impulse waves. The shape of the granular particles and pile height-to-width ratio were found to be critical in determining the types of waves produced.
Researchers at Ruhr-University Bochum have determined the neutron charge radius from lightest atomic nuclei using a more direct methodology, differing significantly from previous calculations. The new result corrects the previously assumed value for the size of a neutron.
Researchers at the University of Otago have successfully trapped and cooled three individual atoms, allowing them to observe previously unseen complex atomic interactions. This breakthrough has significant implications for future quantum technologies, including the potential to build and control single molecules of particular chemicals.
Researchers confirm triaxial nuclei wobble on intermediate axes, providing insight into nuclear structure and heavy element formation. The study's findings generate confidence in predictions about nuclear physics and stellar environments.
Laloë's theory combines adding a random term to the Schrödinger equation with another concept from de Broglie and Bohm, relating quantum collapse to the universal gravitational field. This approach can be applied to both macroscopic objects like cats and atoms.
Researchers have developed a new model to track object drift based on satellite data from GPS-equipped buoys in the Florida Current. The study finds that buoyancy has the greatest effect on an object's trajectory, with implications for cleaning up ocean litter and tracking algae movement.
Researchers created a suction unit that can grip rough surfaces, overcoming vacuum leakage limitations. The zero-pressure difference method uses a high-speed rotating water ring to maintain vacuum and achieve energy efficiency.
Researchers have identified a repeating Fast Radio Burst source in a nearby spiral galaxy, which is radically different from previous studies. The discovery challenges assumptions about the origin of these mysterious radio pulses and may indicate that FRBs are produced in a large zoo of locations across the Universe.
Researchers at Argonne National Laboratory propose most complete picture to date of metal-insulator transition in transition metal oxides, enabling improved tuning and control for low-power and ultrafast microelectronics. The study reveals that size of vegetable ion within crystal structure affects transition temperature, making materi...
Researchers using ESO's Very Large Telescope have discovered a giant planet orbiting a hot white dwarf star, stripping away its atmosphere to form a disc. The system's unique properties provide clues to the composition of exoplanet atmospheres and challenge our understanding of planetary systems' final fate.
Physicists have made significant breakthroughs in understanding how liquids behave with other materials, including finding super-repellant substrates that can repel water. Their findings provide a comprehensive framework for tailoring material properties, which has important implications for various physical and biological systems.
Researchers at UNM's Department of Physics and Astronomy have discovered that decreasing the density of nanoparticles in ordered arrays produces exceptional electric field enhancements. By making particles smaller and farther apart, interactions between nanoparticles are strengthened, resulting in stronger collective responses.
Researchers at the University of Queensland have discovered a new way of understanding time in the quantum world, where events can be in multiple states simultaneously. This 'quantum time order' challenges our classical notion of cause and effect.
Spin-torque oscillators, used to generate microwaves, are unstable when connected in series due to random fluctuations that can suppress or destroy the oscillations. The new study suggests alternative methods for robust microwave generation on the macro scale.
In acoustoelectronics, surface acoustic waves generate electric currents with conventional and unconventional components. The Valley Acoustoelectric Effect creates a warping-based current and a Hall current with distinct characteristics.
Scientists have developed a quantum algorithm that can process large sets of data faster and more accurately than standard methods. The Kravchuk transform, a quantum counterpart of the Fast Fourier Transform (FFT), enables efficient processing of digital images, sound, and radio signals.
A quantum computer has solved a complex chess puzzle using quantum physics, with the solution determined by atomic microscopy. The experiment was designed to demonstrate quantum supremacy for certain optimization problems, and its feasibility is now within reach of laboratory implementation.
Physicists at Saarland University have developed a mathematical model that describes how biological systems can measure and regulate their length. The model explains how neurons can determine their own length and can be generalized to other biological systems, including trees, humans, and cells.
Scientists unveil rigorous quantum mechanical definition of atomic oxidation number, enabling accurate simulations of charge transport in ionic systems crucial to energy technologies and planetary science research. This breakthrough resolves a long-standing conundrum in condensed matter physics.
Researchers at TUM and Max Planck Institute discovered quasiparticles that don't decay, but instead oscillate between decay and rebirth. This phenomenon explains unusual stability in materials like magnetic compounds and superfluid helium.
Researchers have shown that digital quantum simulations can be more robust and stable than previously assumed. By considering only relevant system values, a sharp threshold is reached where the Trotter error has limited impact, allowing for longer simulations of larger systems.
Rice University physicist Kaden Hazzard has won a National Science Foundation CAREER Award to create algorithms that aim to advance the creation of novel quantum matter. He will investigate new ways to simulate states of matter at extreme cold temperatures, as close as possible to absolute zero.
A precise definition of a black hole's singularity proves elusive, with diverse definitions among physicists and different physical approaches to understanding the phenomenon.
Researchers at IBS confirmed wave spreading mechanisms in a cloud of quantum particles, extending computational horizons from one day to 60 years. They used novel toolbox and Discrete Time Quantum Walks for fast simulations, revealing subdiffusive cloud spreading up to record timescales.