Articles tagged with Theoretical Physics
Physicists at TUM and University of Cologne develop theoretical description of behavior for magnetic vortices in conductors, semiconductors, and insulators. The theory predicts properties for optimal device development, promising compact frequency devices with high efficiency.
Uwe Thumm, a theoretical physicist at Kansas State University, has been awarded the prestigious Humboldt Research Award for his lifetime contributions to atomic, molecular and optical physics. The award recognizes his fundamental discoveries and new theories that significantly influenced his field.
Researchers at the University of Southampton have proposed a new fundamental particle that could explain why Dark Matter remains undetected. The particle interacts strongly with normal matter, making it a promising candidate for detection in space experiments.
A team of physicists has found that protons and neutrons in large atomic nuclei do not behave as predicted by existing models. The researchers used experimental data from various elements to fit parameters into the current model, showing that quantum effects and nuclear vibrations have a lower impact on individual particles than thought.
A new study by Professor Ulf-G Meißner finds that fundamental physics constants are fine-tuned to allow for the emergence of a life-enabling universe. The researcher used high-performance computers to simulate worlds with altered light quark masses and found that variations up to 2-3% do not prevent the formation of carbon and oxygen.
Physicists at Goethe University Frankfurt have used the COLTRIMS reaction microscope to demonstrate that the structure of the helium-3 molecule is a 'cloud' rather than a solid structure. The results resolve a long-standing dispute in theoretical physics and show that all possible configurations are equally probable.
Researchers developed computer models that match experimental results, explaining the dynamic processes behind essential cell components. Microtubule stability is crucial for cell survival, and the study provides new insights into how cells maintain or dismantle these structures.
Two new baryon particles, Xi_b'- and Xi_b*, have been discovered in accordance with a prediction made by York University Professor Randy Lewis and Richard Woloshyn in 2009. The discovery was made using the Large Hadron Collider at CERN.
Researchers sent twisted light beams across Vienna, encoding images and demonstrating increased data-carrying capacity. The technology could significantly increase data-rates in classical communication and make secret keys tougher to crack in quantum communication.
Researchers describe the Terasaki ramps in the endoplasmic reticulum as spiral structures that connect parallel sheets, allowing for high density of ribosomes. This geometry is stable and minimizes energy, consistent with the laminar structure of the stacks.
Researchers at Vienna University of Technology and Washington University in St. Louis have confirmed a paradoxical laser effect, where energy loss can turn lasers on. By carefully tuning the amount of light lost through a chromium needle, they were able to switch the laser system on.
Junior Professor Román Orús of Johannes Gutenberg University Mainz has been awarded the 2014 EPS Early Career Prize for his work on tensor network techniques and quantum entanglement. The prize recognizes his significant contributions to European research in physics.
Scientists simulate nano-bearings made of C60 flake to study friction reduction. However, results show no significant decrease in friction when the flake is attached in a way that prevents rotation.
A new partnership between NSF, NCI, SU2C, and The V Foundation will explore transformative, theoretical biophysics for cancer research and treatment. This collaboration aims to merge life sciences with physical, computational, and engineering sciences to develop innovative approaches.
The Center for Theoretical Biological Physics at Rice University has received a five-year, $11.75 million grant from the NSF to support its work on applying physical science to new aspects of the natural world. Researchers will develop concepts, models and methods that quantitatively describe processes in living systems.
Rice University theorists show that energy landscapes dominate both evolution and folding of proteins. The team used computer models to compare the folding of natural proteins from eons to seconds, revealing a common connection between evolution and physics.
The BICEP2 collaboration has published nuanced findings on microwave sky patterns, suggesting possible primordial gravitational waves. However, they acknowledge the presence of galactic dust as a potential explanation for the signals.
The Princeton Plasma Physics Laboratory has received funding to study the role of plasma in nanoparticle synthesis, a process used in various applications including energy technologies and pharmaceutical products. Key researchers will investigate complex interactions between hot plasma gas and material synthesis.
Scientists detect the first Thorne-Żytkow object, a bizarre type of hybrid star formed from red supergiant and neutron stars. The discovery provides evidence for a new model of stellar interiors and offers insights into heavy element production in the universe.
Researchers at Kansas State University are developing a way to enhance high-order harmonics to create powerful small tabletop light sources. They propose synthesizing two- or three-color laser fields to optimize harmonic intensity, potentially leading to new applications in science and technology.
Smaller laser-plasma accelerators could accelerate particles to high energies, potentially reducing the cost of high-energy physics research and industrial applications. The new technology uses a combination of lasers to create an incoherent wakefield, which would allow for more sustainable and affordable accelerators.
Researchers challenge previous predictions suggesting a potential breach of the third law of thermodynamics at extremely low temperatures. They demonstrate that particles confined within finite volumes, even at zero temperature, do not violate the law.
A new 5-qubit array demonstrates improved reliability in quantum computing, a crucial step towards building a functional quantum computer. The team's findings are based on theoretical work by Austin Fowler and the surface code architecture, which provides a way to control qubits properly.
Scientists at Yale have confirmed a long-held theoretical prediction in physics, improving the energy storage time of a quantum switch. The breakthrough opens new frontiers for quantum information processing and measurement systems.
Researchers Artur Ekert and Renato Renner propose a way to use quantum properties of particles of light to share secret keys for secure communication. They found that certain correlations can protect us against adversaries with superior technology, even if our choices are not completely predictable.
Physicist Chris Adami has solved the information paradox in Hawking's black hole theory by introducing the concept of stimulated emission. According to Adami, the information swallowed by a black hole is copied and preserved outside the event horizon through stimulated emission.
Researchers from University of Waterloo and Harvard discover pseudogap phase's quantum states, which could unlock room-temperature superconductors. The findings address a crucial unsolved problem in theoretical condensed matter physics.
Carlo Di Castro reflects on the development of theoretical condensed matter physics in Rome, highlighting key areas like superfluid helium, quantum systems, and high-temperature superconductors. He shares personal anecdotes about his research policy experiences and the evolution of his field.
Researchers at Virginia Tech used experimental measurements and analysis software to understand how fruit bats use their wings to manipulate airflow. They found that bat wings can generate forces up to two-to-three times greater than a static airfoil wing, making them ideal for designing micro air vehicles with flapping wings.
Renowned physicist Lawrence Krauss believes science fiction is not a match for reality. He argues that science fiction often fails to capture the complexity of scientific discoveries. Meanwhile, Krauss suggests exploring real-world applications of science fiction concepts, such as warp drive and teleportation, which may be possible in ...
Researchers have successfully produced artificial graphene from traditional semiconductor materials, opening up new possibilities for high-performance photovoltaic cells, lasers, LED lighting, and more. The discovery was made by a team of scientists at the University of Luxembourg and published in Physical Review X.
Researchers measured the electric dipole moment of electrons to probe the Standard Model's limitations. Their results suggest that supersymmetric particles may not exist as predicted, leaving gaps in our understanding of dark matter and the universe.
Researchers observed 'dissipation' peaks in NbSe2 due to frictional force, related to charge density waves. Their theoretical model reproduces experimental data, shedding light on nanofriction mechanisms underlying energy losses.
Researchers have successfully demonstrated how complex theoretical physics can be transformed into a physical object using a 3D printer. They created an 8 cm3 object based on a mathematical model describing forest fires, which could be used to produce works of art or transform scientific discussions.
A team of biochemists and mathematicians developed a geometric model to predict how biological molecules interact with water, computing results up to 20 times faster. This approach may help identify new targets for treating human diseases.
Scientists demonstrated a breakthrough in quantum cryptography, enabling perfectly secure data transmission between two sites for up to fifteen milliseconds. This achievement marks the first step towards impregnable information networks controlled by Einstein's relativity and quantum theory.
A new mixing strategy using synchronized flows of jets has been developed to optimize mixers in industrial products. The 'cat's eyes flip flow' is a promising solution that increases performance while reducing energy consumption, making the process more environmentally friendly.
Andreas Ludwig, a leading theoretical solid-state physicist, is awarded the prize by the Alexander von Humboldt Foundation. He will conduct future-oriented research at the University of Cologne's Institute for Theoretical Physics, enhancing Germany's physics profile.
Researchers developed a new model to measure changes in air flow patterns affecting wind turbines' output power. The study found that energy can be transferred to wind turbines from both above and below the blades, expanding our understanding of wind turbine performance.
French researchers create sophisticated model to study geophysical vortices, which can impact weather forecasting and environmental monitoring. The study reveals that strong background rotation suppresses radiative instability in vortices.
A new study by Canadian physicists reveals that small impurities in the water are a critical factor in the formation of icicle ripples. The researchers found that icicles grown from pure distilled water exhibited no ripples, but those grown with salt impurities developed characteristic ripples.
Claudio Bunster Weitzman, a renowned Chilean theoretical physicist, has been awarded the prestigious TWAS-Lenovo Science Prize. He is recognized for his groundbreaking work on gravity and magnetic monopoles, shedding light on areas such as black holes and spacetime.
Researchers at National Ignition Facility have made significant progress in creating a self-sustained fusion reaction, but still face challenges to overcome before achieving the highly stable and precisely directed implosion required for ignition.
Professor Julia Yeomans has been awarded the EPJE Pierre-Gilles de Gennes Lecture Prize for her outstanding work in soft matter and biological physics, particularly in the study of complex and active liquids. She is also an expert in theoretical and computational physics.
Scientists have developed an atom-based analogue for electronic devices using ultra-cold bosonic atoms and quantum dots. The transport of single particles through the chain of quantum dots enables current production in systems with reduced dimensionality.
The researchers discovered that the interface between two non-magnetic materials exhibits magnetism due to the formation of local moments. This phenomenon could lead to the creation of electronic devices that combine computation and data storage capabilities.
Researchers have developed a 'dark channel mechanism' to explain binding processes in biochemical materials, allowing for deeper understanding of molecular interactions. The discovery, combined with ab initio calculations and high-resolution spectroscopy, provides new information on the chemistry of life.
Physicists have built a theoretical construct of twisted atom beams, which can have potential applications in quantum communication and atomic processes. These beams were created by solving the non-relativistic Schrödinger equation for atoms driven by a laser field.
Researchers at Universitat Autonoma de Barcelona and Centre National de la Recherche Scientifique detect deviations in B meson decay consistent with New Physics predictions. The findings suggest the existence of a new particle, Zprima, which could explain dark matter and gravitational interactions.
Ngô Bao Châu and Dam Thanh Son have been selected as 2013 Simons Investigators for their groundbreaking work in mathematics and physics. They will receive $500,000 in support over five years to study fundamental questions.
Researchers used dysprosium to measure electron velocity and found the maximum speed of an electron is consistent with the speed of light. The experiment pushes the limits of Einstein's theory, potentially revealing new insights into particle physics.
Cancer originates from a default genetic 'safe mode', where cells revert to an ancient programming, leading to uncontrolled proliferation. The theory suggests that cancer-causing genes are reactivated in adulthood due to triggers like chemicals or radiation, adding weight to the radical new idea.
Researchers develop method to classify quantum entanglement states into geometric objects called polytopes, allowing for efficient prediction and characterization of entangled states. This breakthrough enables the development of novel quantum technologies with practical applications.
Researchers at Georgia Tech create toroidal shapes to investigate liquid crystal materials' behavior and properties. The unique geometry allows for precise control over the shape's size and curvature, enabling experiments that were previously impossible.
Kimball Milton, a University of Oklahoma physics professor, has been awarded a grant from the Simons Foundation Fellows Program in Theoretical Physics. He will explore the physics and applications of the quantum vacuum, including the Casimir effect and its potential for practical uses in nanoscale machines.
Researchers from York, Paris and Missouri developed a new understanding of collective spin excitations in semiconductors, reducing decoherence and improving device functionalities. The discovery could lead to the development of new spintronic devices and quantum information technologies.
Scientists aim to develop first global quantum communication network by testing the limits of quantum entanglement using the International Space Station. The proposed experiment uses Bell's theorem and quantum key distribution to enable secure communication over long distances.
Scientists have created a metascreen cloak that can hide objects from microwaves, providing optimal functionality at specific frequencies and bandwidths. The researchers predict the technique's conformability and robustness will enable cloaking of oddly shaped objects.
Researchers have successfully replicated Feynman's famous double-slit thought-experiment using a gold-coated silicon membrane and a moveable mask. This achievement demonstrates the mysterious properties of electrons, including their ability to produce an interference pattern when fired at the wall one at a time.
Researchers have found that entanglement across a black hole's event horizon plays a crucial role in determining the existence of a 'firewall' paradox. The study confirms and generalizes previous claims about entanglement in black holes, supporting Einstein's theory of gravity.