Articles tagged with Theoretical Physics
Researchers from the KM3NeT collaboration analysed 5,828 atmospheric neutrino events to test for violations of Lorentz invariance, finding no evidence but setting new limits on possible effects. The results are promising for future studies of neutrino oscillations and potential discrete spacetime.
Physicists at the University of Cologne observed quantum states in a material system that behave as predicted in topological quantum computing, supporting a theoretical description of superconductivity's interaction with topological insulators. This finding is promising for Majorana-zero modes and quantum bits.
Researchers used fractional calculus to create a one-dimensional model with nonlocal interactions, displaying correlation scaling similar to the two-dimensional BKT transition. However, the model lacks a conventional stiffness jump, exhibiting an unusual combination of analogy and difference in response to a global phase twist.
Researchers successfully replicate a molecular screw powered by electrons, setting a new operating principle for machines at the limits of miniaturisation. The discovery has potential applications in molecular electronic components, spintronics, and microfluidic systems.
UNLV physicists have discovered that water can change its atomic structure under extreme pressure, altering its appearance and properties. The study, published in Communications Chemistry, shows that water becomes a lower-symmetry version of itself under pressure, leading to complex behavior that challenges previous expectations.
Physicists at University of Toronto have identified 'octupolar' magnetism, a complex form of magnetism with eight poles, using light to probe atomic vibrations. This discovery opens up new avenues for quantum technology development, including controllable memory elements and computing devices.
Researchers at UC Santa Barbara extend search for quantum black holes at the LHC, using a novel method to search for new particles. The study informs theories on spacetime structure and provides an exclusion limit on the existence of these tiny objects.
Scientists at MIT have shown that a neutrino laser, proposed to produce a concentrated beam of neutrinos, is impossible due to recoil and fermionic nature. The research demonstrates that the concept, previously thought to be plausible, is fundamentally flawed.
Researchers from the University of Osaka have developed a prediction framework that rapidly evaluates promising quantum materials without sacrificing accuracy. The framework enables the evaluation of optical losses using simplified theoretical expressions, making searches much more tractable.
A new material system has been developed to bypass limitations in spin-orbit torque magnetic random-access memory, enabling highly efficient orbital torque-driven magnetic tunnel junctions and solving critical yield bottlenecks.
The new group aims to develop a complete geometric classification of wave functions for crystalline systems, predicting promising materials for photovoltaics and controlling properties. Dr Johannes Mitscherling's team combines solid-state physics with geometry and quantum information to uncover novel phenomena in crystals.
Physicists at the University of Basel and Technical University of Munich developed a method to study the internal behavior of Wigner crystals, a fragile quantum state. By illuminating a single atomic layer of tungsten diselenide and measuring reflected light, they observed new optical features revealing collective electron dynamics.
Prof. Haim Sompolinsky receives the 2026 Dirac Medal for pioneering contributions to equilibrium statistical mechanics and non-equilibrium statistical mechanics. His work helps establish the field of theoretical neuroscience, elucidating how collective activity supports memory, computation, and learning.
Gert Aarts, a renowned physicist, has been awarded 1.58 million euros in funding from the Wübben Foundation Science to establish an Advanced Professorship at Bielefeld University. He will focus on linking theoretical physics with machine learning and expanding research on strongly interacting matter.
Exceptional points in non-linear systems follow a universal geometric order, according to a new study published in Nature Communications. The findings have implications for the design of highly sensitive sensors and could lead to a deeper understanding of non-Hermitian Physics.
Researchers use periodic driving to transform optical lattice into accurate SYK model simulator, reproducing strong quantum chaos and information scrambling. This method opens door to studying complex quantum phenomena in strongly interacting systems.
A new study reveals that cooperation does not require close family ties or reputation, but rather opponent-specific responses, leading to the emergence of cooperative behavior. This finding challenges conventional evolutionary theory and has implications for the design of more collaborative artificial intelligence systems.
Theoretical physicists develop new method to order Feynman integrals based on their geometric structure, reducing computation time by a factor of 1,000. This allows for precision predictions in high-energy physics measurements, such as those made at the Large Hadron Collider.
Researchers at Penn State simplify black hole mergers by applying thermodynamic principles, achieving accurate predictions of the final remnant's mass and spin. The maximum entropy conjecture shows that the merging black holes' energy and angular momentum map onto those of a sequence of hypothetical remnants, reaching a maximum entropy...
A study by researchers at Kyushu University suggests that continuous parameters in quantum gravity may not be freely adjustable, but rather emerge from operators within the theory. The findings support Einstein's century-old claim about the fundamental laws of nature and have implications for our understanding of quantum gravity.
Researchers have developed a new theory that enables the description and simulation of non-reciprocal interactions, which are essential for studying complex systems like flocks and swarms. By introducing auxiliary degrees of freedom, physicists can now accurately model these systems using established methods.
A team of physicists used mathematical modeling to describe the spread of opinion and election results in terms of anomalous diffusion. Their research found that certain social phenomena exhibit similar characteristics to physical systems, such as particle movement in complex media.
Researchers at Colorado State University have measured a hydrogen proton's radius to be 0.84 femtometers, resolving the long-standing scientific discrepancy that has puzzled scientists for years. The finding confirms the Standard Model theory and opens a door for further study, revealing subtle issues in earlier measurements.
A new model shows that the processivity of motors helps break symmetry in chromosomes, driving deformation from a ball to a cylinder shape. The model explains structural patterns like chromosomal jets and provides insights into eukaryotic chromosome replication.
Researchers measured hydrogen's hyperfine splitting in antihydrogen, a tiny energy difference that could reveal a hidden difference between matter and antimatter. The study confirmed the symmetry between the two, but future measurements aim to improve precision and potentially break current physics understanding.
Researchers from Vienna and Frankfurt have developed a mathematical formula describing critical collapse, where spacetime organizes into a regular structure that may form a black hole. This phenomenon is similar to the formation of ice crystals in liquid water.
Scientists have developed a theoretical model showing that atomic clocks can observe the quantum superposition of time. The researchers used modern techniques to detect the signature of entanglement between the clock's motion and its internal energy, improving sensitivity by 100-1000 times.
Professor Krausz's election is a recognition of his pioneering attosecond metrology, enabling the observation of electron dynamics on their natural timescales. He has opened new frontiers in physics, chemistry, and materials science with far-reaching implications for fundamental research and technological innovation.
Researchers at MIT have discovered a mathematical connection between quantum mechanics and classical physics, enabling the description of quantum behavior using everyday classical ideas. The team's findings shed light on phenomena such as the double-slit experiment, which has long been challenging to explain using classical tools.
Researchers show math underlying quantum gravity bears resemblance to quantum Hall effect, resolving cosmological constant problem. The Chern-Simons-Kodama state, a proposed ground state of quantum gravity, has a similar topology that keeps the cosmological constant's value stable.
Mayuko Yamashita has been awarded a six-year, $1.5 million Hideki Yukawa Chair in Theoretical Physics at Perimeter Institute, supporting her research on stable homotopy theory and its applications in quantum field theory.
Researchers have observed evidence of a new type of mesic nucleus, which could provide insight into the vacuum structure and mass generation mechanism. The discovery was made using a high-precision experiment at the GSI Helmholtzzentrum für Schwerionenforschung, Germany.
Researchers at the University of Waterloo have developed a new theory that suggests the universe's rapid early expansion could emerge naturally from a deeper, more complete theory of quantum gravity. This approach offers a unified picture that connects the earliest moments of the universe to modern cosmology.
Researchers used nonlinear dynamics to explore why eczema flare-ups happen and how to improve treatment outcomes. They found that small physiological changes can significantly increase the maintenance burden in long-term efforts to keep eczema in remission.
Engineers at Harvard create microcombs on photonic chips, enabling compact, programmable frequency combs for precision measurement and telecommunications applications. The breakthrough makes electro-optic microcombs more practical, energy efficient, and diverse.
Physicists have developed a more accurate method for estimating the impact of calculations that are not performed in high-energy particle collisions. The new approach uses perturbative calculations to reduce uncertainties present in previous simulations.
Researchers investigated the role of memory in quantum systems and dynamics, discovering a process can appear memoryless from one view while retaining memory from another. The study clarifies a fundamental aspect of quantum dynamics and highlights the uniquely quantum nature of time evolution.
A new study by MANA demonstrates that strongly correlated insulators can behave differently, allowing spin and charge excitations to exist independently. This enables the creation of new electronic modes that actively modify band structures under external stimuli.
Researchers have created a new computational method to simulate Tip-Enhanced Raman spectroscopy (TERS) signals with high accuracy. This enables the study of atomic motion down to individual molecules or defects in metallic surfaces. The method provides a detailed understanding of the signatures of local atomic motion and its sensitivit...
The American Physical Society's Global Physics Summit will feature over 10,000 individual presentations on new research in astrophysics and particle physics. Attendees can book discounted hotel rates near the Colorado Convention Center until February 12 to receive a discount.
Researchers have identified a new class of one-dimensional particles, dubbed anyons, which exhibit properties between bosons and fermions. The discovery opens up new possibilities for investigating fundamental physics in realistic experimental settings.
Quantum field theories are the foundation of modern physics, but their complex nature makes them difficult to simulate on a computer. A team of researchers has developed an AI solution that can parameterize the action in these theories on a lattice, enabling more efficient simulations.
A research team at the University of Vienna demonstrates that massive metallic nanoparticles follow quantum mechanics rules, creating a 'Schrödinger's cat state' and breaking existing records for macroscopic scale tests. The experiment shows that even large objects can exhibit wave-like behavior.
Researchers have shown that quantum collapse models, which challenge standard quantum theory, imply a fundamental limit on clock precision due to tiny intrinsic uncertainty in time. This means modern timekeeping technologies are entirely unaffected by such uncertainty.
Researchers at Heidelberg University developed a new theoretical framework that connects two fundamental domains of modern quantum physics, describing the emergence of quasiparticles in systems with both mobile and static impurities. The new theory explains how quasiparticles form even in systems with extremely heavy impurities.
Physicists at Trinity College Dublin propose a new means of capturing useful energy from light sources like sunlight, lamps, and LEDs. Theoretical analysis may lead to the development of optical devices that can channel light energy into a concentrated beam.
Researchers at Texas A&M University are building highly sensitive detectors to explore dark matter and energy. The team's work builds on previous breakthroughs in detecting low-mass particles, and they aim to find ways to amplify signals that were previously buried in noise.
HALIMA, a hybrid array for lifetime measurement of neutron-rich nuclei at IMP, enables precise sub-nanosecond measurements using the four-fold FF/β-Ge-LaBr <sub>3 </sub>(Ce)-LaBr <sub>3 </sub>(Ce) coincidence technique. The system reduces Compton continuums and enhances selectivity via fission fragments implantation.
Researchers at the University of Cincinnati have solved a long-standing problem in particle physics, using fusion reactors to produce subatomic particles called axions. This breakthrough has implications for understanding dark matter, which is thought to make up most of the universe's mass.
Physicist Ralf Schützhold proposes an experiment to transfer energy from a light wave to a gravitational wave, and vice versa. This could lead to new insights into the quantum properties of the gravitational field.
The LHC accelerator confirms an improved model of proton collisions, with implications for our understanding of quantum mechanics. The generalized dipole model describes existing data more accurately and works well in a wider range of energies.
The German Research Foundation has awarded a €10 million grant to the Collaborative Research Centre 211 'Strong-Interaction Matter under Extreme Conditions' for its third phase, extending funding for another 3.5 years.
Researchers from two Max Planck Institutes directly observe the strong reshaping of C60 molecules by laser fields using x-ray camera. At low intensities, the molecule expands before fragmentation sets in, while at high intensities, fast expansion and removal of outer valence electrons occur.
Researchers used quantum mechanical simulations to study the interaction of light with ice, revealing new insights into its chemical properties. The findings have implications for understanding the release of greenhouse gases from thawing permafrost and improving predictions of climate change.
Researchers have developed a new framework that governs the hidden rule behind stacked-shock implosions, allowing for efficient and scalable compression. This work extends classical theory into modern high-energy-density regimes, revealing a natural harmony underlying extreme physics processes.
Researchers from Polish institutes show that identical particles exhibit observable quantum nonlocality due to their fundamental identity. They use advanced tools to analyze and identify classical optical systems where this phenomenon manifests, shedding light on the primordial form of nonlocality in quantum mechanics.
A UNIGE-led team found that dark matter behaves similarly to ordinary matter on a cosmological scale, following Euler's equations. However, the possibility of an unknown interaction or fifth force remains open.
Researchers at TU Wien have developed a new computational method that accurately calculates van der Waals forces between large molecules, resolving decades-long discrepancies. The improved method corrects errors in existing approaches and enables reliable predictions for biological systems and renewable energy technologies.
The study reveals that certain rectangular shapes allow chloroplasts to achieve both efficient light capture at high density and enough space for shifting during strong light avoidance. The natural geometry of Elodea cells matches the predicted optimal shapes well, with a balance between packing and flexibility.
Researchers develop highly tunable spatial heterostructure within pure titanium using mechanical milling and laser powder bed fusion, achieving strength-plasticity synergy and overcoming the strength-plasticity trade-off bottleneck. The resulting harmonic heterostructure endows pure Ti implants with excellent wear resistance.