Articles tagged with Theoretical Physics
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.
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.
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 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.
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.
Researchers found that heat transfer values increase dramatically at distances less than ten nanometres, exceeding theoretical predictions by a factor of one hundred. This phenomenon challenges current understanding of heat transfer in the nanometre range.
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.
Physicists have analyzed how neutrinos change 'flavor' as they travel through the cosmos, gaining insights into their masses and evolution. The study's findings hint at possible Charge-Parity violation in neutrinos and their antimatter counterparts, with researchers seeking more data to answer fundamental questions about the universe.
Researchers at Goethe University Frankfurt used complex simulations to study the origin of powerful jets emitted by black holes. They discovered that magnetic reconnection is involved in extracting rotational energy and powering these jets.
The team developed a new method to produce ultrafast squeezed light, which can fluctuate between intensity and phase-squeezing by adjusting the position of fused silica relative to the split beam. This breakthrough could lead to more secure communication and advance fields like quantum sensing, chemistry, and biology.
Researchers at Nagoya University solved the puzzle of loop current switching in kagome metals, a special group of quantum metals. Weak magnetic fields reverse tiny loop currents, changing the material's macroscopic electrical properties and reversing current flow direction.
Researchers have made significant advances in modeling heavy ion collisions, providing additional information about the matter in the early universe and improving our understanding of quark-gluon plasma (QGP). The new models better correspond to experimental measurements, giving a clearer view of QGP's birth.
The institute aims to advance fundamental and applied science through interdisciplinary collaboration, with a focus on the unification of gravity and quantum theory. By pursuing the quantum-gravity crossover, researchers hope to develop new technologies and shape humanity's future.
The European consortium, funded by €4.5M, will recruit and train 15 PhD researchers to develop new models and methods for understanding complex biological systems. The network, coordinated by the University of Edinburgh, aims to create a framework grounded in physics that can be applied systematically.
Scientists at King's College London discover mathematical equations that turn random events into clocks, potentially understanding cell timekeeping and detecting quantum effects. The study also aims to shed light on the nature of time itself, including its directionality and quantization.
Researchers at MIT introduce the concept of a neutrino laser that uses cooled radioactive atoms to produce amplified neutrino beams. By cooling rubidium-83 to near absolute zero, the team predicts accelerated radioactive decay and production of neutrinos. This innovation could lead to new applications in medicine and communication.
Researchers at Max Planck Institute develop protocols for optimal mixing in cellular and microfluidic systems, overcoming energetic and fluid motion limitations. Their findings reveal a fundamental limit on information erasure efficiency, providing a theoretical framework for efficient engineering designs.
Researchers discovered a new in-between quantum state with a power law decay, which could make accessing these states easier and more reliable. This breakthrough opens up novel concepts for fundamental physics and potential applications in emerging fields like quantum computing.
Researchers at the University of Vermont found an exact solution to a model that behaves as a damped quantum harmonic oscillator. This discovery has significant implications for ultra-precision sensor technologies and the measurement of quantum distances.
A team of researchers has demonstrated that quantum entanglement follows universal rules across all dimensions, using thermal effective theory. The study reveals the behavior of Rényi entropy in higher-dimensional systems and clarifies the behavior of the entanglement spectrum.
Physicists used a machine-learning method to identify surprising new twists on the non-reciprocal forces governing a many-body system. The AI approach provides precise approximations for these forces, correcting common theoretical assumptions with an accuracy of over 99%.
MIT physicists performed an idealized version of the double-slit experiment, confirming light behaves as both a particle and wave. The more information obtained about light's path, the lower the visibility of the interference pattern was.
A team of scientists from Helmholtz-Zentrum Dresden-Rossendorf analyzed the behavior of flash-frozen silicon surfaces, revealing a strong impact of cooling rates on crystal growth. The results show that slow cooling produces large, ordered domains with a uniform honeycomb structure.
Researchers discovered that a subtle shift in gene activity rhythms at higher temperatures, known as waveform distortion, helps maintain the body's 24-hour cycle. This process also influences synchronization with day-night cycles and environmental cues.
Scientists at AIMR successfully demonstrated Rabi-like splitting in an artificial magnet using nonlinear coupling, preserving the system's symmetries. This finding opens up new possibilities for advancing our understanding of nonlinear dynamics and coupling phenomena in artificial control.
Researchers propose a novel method for detecting dark matter using thorium-229 nucleus properties, with potential to detect forces 10 trillion times weaker than gravity. The new approach aims to identify minute deviations in the absorption spectrum of thorium-229 to reveal dark matter's influence.
Researchers used machine learning to simulate galaxy evolution and supernova explosions, achieving speeds four times faster than supercomputers. This breakthrough enables the study of galaxy origins, including the creation of the Milky Way's elements essential for life.
A national pilot program led by UTA faculty is helping take the mystery out of quantum physics for students and educators. The program, Quantum for All, provides hands-on curriculum and classroom strategies to equip high school science teachers with the tools they need to teach quantum science.