Articles tagged with Theoretical Physics
Researchers at the University of Minnesota have developed a new strategy to detect axions using particle collider experiments. By analyzing the decay product of unstable heavy particles into muons, they hope to locate and prove the existence of these hypothetical particles.
An international team of scientists has successfully measured the electron spin in matter for the first time using kagome materials. The results could revolutionize the study of quantum materials, with potential applications in renewable energy, biomedicine, electronics, and quantum computing.
The CALorimetric Electron Telescope (CALET) study found that the movement of cosmic rays is affected by the Sun's magnetic field, causing fluctuations in galactic cosmic rays reaching Earth. The research indicates that electrons are more susceptible to solar modulation than protons.
A team of researchers at Johannes Gutenberg University Mainz studied the collective behavior of small robots and found that they can solve tasks that a single machine cannot. The study uses statistical physics to analyze how the robots interact and move, revealing potential applications in medical and pharmaceutical applications.
Researchers have modeled fractons, stationary quasiparticles, and found they are not visible even at absolute zero temperature due to quantum fluctuations. The team plans to develop a model to regulate these fluctuations, paving the way for experimental materials that could exhibit fractons.
Researchers at UChicago's Pritzker School of Molecular Engineering have developed a method to constantly monitor noise around a quantum system and adjust qubits in real-time. The approach uses spectator qubits to track environmental changes and cancel out noise in vital data-processing qubits, improving the quality of data qubits.
The CALET team, including researchers from Waseda University, found that cosmic ray helium particles follow a Double Broken Power Law, indicating spectral hardening and softening in high-energy ranges. This deviation from expected power-law distribution suggests unique sources or mechanisms accelerating and propagating helium nuclei.
Scientists developed a new method to manipulate light using non-Hermitian theory, enabling unidirectional control of surface plasmon polaritons. This breakthrough could lead to improved quantum sensors and applications in disease diagnosis and atmospheric gas detection.
University of Florida astronomers discovered parity symmetry violation, a broken symmetry that explains why there's more matter than antimatter. This finding confirms the Big Bang theory and addresses the question of why something exists instead of nothing.
New experiments with ultra-cold atomic gases show that quantum systems composed of many particles change over time following a sudden energy influx. The findings reveal a universality in the behavior of these systems, shedding light on how they evolve and interact.
Research team settles decade-long debate on Ta2NiSe5's microscopic origin of symmetry breaking; structural instability hinders electronic superfluidity. Advanced experiments and calculations confirm crystal structure changes as driving force behind phase transition.
Researchers investigated Hardy nonlocality using quantum computers, discovering increased success probability as the number of particles grows. This challenges classical theories and has implications for quantum mechanics and communications.
Researchers at Max Planck Institute discover that exciting electrons with strong light leads to exotic quantum effects, enabling new functions on demand. The team made an unforeseen discovery: Floquet bands form after a single optical cycle, paving the way for ultrafast electronics and tailored quantum functions.
Bilayer hBN exhibits moiré polar domains that form networks of topological polar merons and antimerons. This symmetry breaking enables control over the topological properties in two-dimensional layered materials. The polarization field's winding is topologically non-trivial, resulting from a previously overlooked in-plane component.
Physicist Sekazi Mtingwa recognized for promoting accessibility, diversity, and equity in STEM. He co-developed the Bjorken-Mtingwa formulation solving intrabeam scattering effects, enabling more efficient particle accelerators.
Researchers found consistent results between observations and theory, showing that clusters have become more centrally concentrated over time. The study provides strong support for the Lambda-CDM paradigm by demonstrating agreement between the observed and simulated concentration-mass relation of galaxy clusters.
Researchers study DNA minicircles using hydrodynamic measurements to understand their behavior under twisting, revealing unique shapes and compactness. The investigation combines theoretical approaches with experimental methods to elucidate dynamic hydroelastic effects in DNA.
Scientists have discovered a new topological phase in twisted 2D materials, which could lead to breakthroughs in nanotechnology. The discovery reveals the formation of polar domains that are inherently topological and form objects known as merons and antimerons.
A team of researchers developed a dynamical model that explains how animals learn over time, contradicting previous theories. The multi-dimensional model shows that learned associations are not mediated solely by strength but by multiple nearly independent pathways.
Researchers at Rutgers University have made significant breakthroughs in understanding the electrical properties of Y-ball, a mysterious 'strange metal'. The study reveals unusual fluctuations in the material's charge and provides new insights into its behavior, which could pave the way for next-generation quantum technologies.
Researchers at UNIGE have designed a quantum material that can be controlled by curving space, allowing for ultra-fast electromagnetic signal processing and potential applications in high-speed communication systems. The material's unique properties enable the creation of new sensors and potentially unlock new avenues in exploration.
Researchers at Lancaster University have discovered how energy disappears in quantum turbulence, a crucial step towards mastering this phenomenon and its applications. The study reveals the role of Kelvin waves in transferring energy from macroscopic to microscopic length scales.
Researchers developed an active model to describe systems of many active particles, finding similarities with the Schrödinger equation and analogies to quantum effects such as tunneling and dark matter.
Researchers at CUNY ASRC detail a breakthrough experiment in which they observed time reflections of electromagnetic signals in a tailored metamaterial. The effect causes a significant portion of the broadband signals to be instantaneously time reversed and frequency converted, forming a strange echo.
Researchers from ETH Zurich have achieved groundbreaking cooling of a glass nanoparticle along two directions of motion, overcoming the 'Dark Mode Effect'. This breakthrough enables the creation of fragile quantum states and paves the way for ultrasensitive gyroscopes and sensors.
A team from TU Wien has developed a method to cool several particles simultaneously by adapting the spatial structure of a laser beam to particle motion. The technique uses far-field wavefront shaping to optimize cooling and can be achieved without knowing the exact location or movement of the particles.
A University of Queensland-led research team is using an unusual caesium atom to search for dark matter particles. The team's work may also improve atomic theory calculations and technology, such as navigation systems.
A new mathematical theory developed by scientists at Rice University and Oxford University can predict the nature of motions in complex quantum systems. The theory applies to any sufficiently complex quantum system and may give insights into building better quantum computers, designing solar cells, or improving battery performance.
A South Korean research team has successfully searched for Dine-Fischler-Srednicki-Zhitnitskii (DFSZ) axion dark matter using a new experimental setup. The group achieved a higher sensitivity than existing experiments, excluding axion dark matter around 4.55 µeV at DFSZ sensitivity.
Researchers at University of Texas at Dallas and Ohio State University identify quantum geometry as primary mechanism for superconductivity in twisted bilayer graphene. This finding paves way for designing new superconductors that can operate at higher temperatures, transforming industries such as energy transport and maglev trains.
Physicists from the University of Vienna successfully demonstrated a universal rewinding protocol that can reverse certain quantum processes, including the time evolution of a single photon. The protocol uses an intricate optical setup and demonstrates reversibility without knowing the interactions with the quantum system.
Researchers from Waseda University measured the energy spectrum of boron and the B/C flux ratio in high-energy cosmic rays using the CALorimetric Electron Telescope. The results indicate a different spectral index for boron compared to carbon, with implications for our understanding of cosmic ray propagation mechanisms.
Scientists have found that manipulating entanglement in quantum systems is inherently irreversible, ruling out the possibility of a second law. This means that entanglement entropy cannot fully recover invested entanglement, making it impossible to transform states back and forth.
Researchers used density functional theory to investigate the mechanical properties of superionic ice XVIII, which is thought to make up a large part of Neptune and Uranus. The study found that dislocations in the crystal lattice produce shear, leading to macroscopic deformations and potentially influencing the planets' magnetic fields.
The team isolated pairs of atoms within a 3D optical lattice to measure the strength of their mutual interaction. They confirmed a longstanding prediction that the p-wave force between particles reached its maximum theoretical limit.
Researchers from Warsaw and Oxford propose a new theoretical framework that incorporates three time dimensions and one spatial dimension. This concept allows for the description of phenomena in a world with superluminal observers, which could potentially exist.
A Polish-German-Italian team developed a new simulation tool called XSPIN to simulate X-ray-induced demagnetisation in multilayer materials. The tool allows for control over laser pulse parameters, such as energy and duration, to achieve specified spatial and temporal scales.
Physicists propose new method to confine quarks, which could reveal why matter has mass. The strong force, a fundamental force of nature, is believed to be responsible for this property. By exploring quark confinement, researchers hope to gain insights into the structure of the universe.
Theoretical calculations and experimental data from the ATLAS detector suggest that photons can create a fluid of strongly interacting particles in collisions with heavy ions. This is supported by observations of particle flow patterns similar to those seen in lead-lead and proton-lead collisions.
The SURGE Topical Theory Collaboration aims to develop calculations and a theoretical framework for discovering the saturated state of gluons. Scientists hope to gain deeper insight into the strong force and gluons' role in generating hadron properties.
Scientists at Brookhaven Lab will develop a comprehensive theoretical framework for describing the interaction of heavy-flavor particles with quark-gluon plasma. The Heavy-Flavor Theory Collaboration aims to provide insights into the properties of quark-gluon plasma and its precursors in nuclear matter.
Researchers at Johannes Gutenberg University Mainz developed a prototype that combines Brownian and reservoir computing to perform Boolean logic operations. This innovation uses metallic thin films exhibiting magnetic skyrmions to achieve energy savings through automatic system reset.
Experimental physicists discovered that water impurities become entrapped within icicles, creating chevron patterns and ripple effects. The study reveals that internal patterns are connected to external shapes, leading to a deeper understanding of natural ice formations.
Researchers have developed a quantum experiment that allows them to probe connections between theoretical wormholes and quantum physics. The study demonstrates the equivalence of wormholes with quantum teleportation, a process experimentally demonstrated over long distances.
Eun-Ah Kim and Michael Matty identified a phase in between solid and liquid for electron crystals, revealing their behavior under certain conditions. In this intermediate phase, electrons arrange themselves into tiny strips that can move around and orient themselves.
Researchers studying exotic atom muonium aim to detect deviations from the Standard Model, which could reveal new physics. By measuring energy levels with unprecedented precision, they may uncover evidence for additional particles or forces that explain the muon's misbehavior.
Researchers at TU Wien have directly measured the fine structure constant using a thin film that rotates light polarisation, revealing an astonishing quantum jump related to this fundamental constant. This measurement provides new insights into the strength of electromagnetic interactions.
Physicists at Goethe University have developed over a million equations of state to model neutron star structure. These models reveal that 'light' neutron stars have a soft mantle and a stiff core, while 'heavy' stars have a stiff mantle and a soft core.
The book delves into the concept of emergence in two domains: condensed matter physics and quantum gravity. It reveals surprising connections between seemingly disparate areas of physics, shedding light on how mysterious materials work and the origins of space and time.
Researchers have developed a new model that combines nuclear physics and string theory to describe the transition to dense and hot quark matter in neutron star collisions. The model allows for the calculation of gravitational-wave signals, showing that both hot and cold quark matter can be produced.
Researchers at UNH tested state-of-the-art calculations of the strong force with an experiment probing proton spin, finding agreement with one but not the other. The findings provide a benchmark for testing the strong force and its applications in future technology.
Physicists at Ural Federal University have developed a theory regulating the solidification of iron-nickel alloys to control characteristics and improve uniformity. This technology will affect high-precision instruments like clocks, seismic sensors, and engines.
Researchers at the University of Queensland have confirmed black hole quantum properties, including superposition and wildly different masses simultaneously. The study reinforces early theories by Jacob Bekenstein, postulating that black holes can only have specific mass values within certain bands or ratios.
Researchers from HKU and Harvard University have developed a new triangular lattice model and sweeping cluster algorithm to simulate Rydberg arrays. Their simulations reveal highly entangled Z2 quantum spin liquids with large parameter regimes, providing valuable insights for future experiments.
Researchers from Rice University and European institutions developed a method to switch on and off topological states in a strongly correlated metal using magnetic fields. The strong electron interactions enable the material to be controlled, which could lead to new applications in sensor technology and electronics.
Researchers detected a spectral softening around 10 TeV in the high-energy cosmic ray proton spectrum, suggesting the proton energy spectrum is not consistent with a single power law variation. The study contributes to understanding of cosmic ray acceleration by supernovae and propagation mechanism.
A team led by Prof. Alan Tennant and Dr Allen Scheie gain deeper insights into the interactions between spins in KCuF3, a simple model material for Heisenberg quantum spin chain. They use neutron scattering to study spatial and temporal evolution of spins.
Researchers from Rice University and partners identified three promising candidate materials using a new framework that cross-references information in a database of known materials with theoretical calculations. The method could help explore strongly correlated topological matter, a large and largely uninvestigated landscape.
The MICROSCOPE satellite has confirmed the equivalence principle with unprecedented accuracy, supporting Einstein's general relativity. The result shows that any deviation in acceleration is less than 1 part in 10^15, ruling out some candidate universal theories of physics.
Researchers at the University of Tsukuba have created light-induced topological states in zinc arsenide, exhibiting unusual behavior where electrical currents flow along the surface. This work explores the possibility of creating topological semimetals and manifesting new physical properties by light control.