Articles tagged with Quantum Field Theory
A simplified cosmological model shows that decoherence can suppress quantum tunnelling, trapping fields in the vacuum state. The environment's influence on the field's dynamics and cosmic expansion determines the initial choice of vacuum.
Mandal is working to develop computer tools for designing quantum materials required for quantum computers and advanced technologies. His research focuses on understanding and designing materials that can protect delicate quantum states.
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.
Giant superatoms combine two quantum-mechanical constructs to suppress decoherence and create entanglement, opening opportunities for scalable and reliable quantum systems. This breakthrough enables quantum information to be protected, controlled, and distributed in new ways.
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 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.
Researchers successfully simulated a complete quantum field theory in more than one spatial dimension using a novel type of quantum computer. This approach enables efficient storage and processing of information, allowing for the observation of fundamental features of quantum electrodynamics.
Shatashvili is being recognized for his contributions to mathematical physics, particularly in the study of symmetry in quantum field theory. His work has been instrumental in connecting mathematics and physics, with notable achievements including the co-discovery of Bethe/gauge correspondence.
Professor Ruth Britto and her international team will develop new algorithmic methods with applications in mathematics, particle physics, and gravity. They aim to tackle longstanding computational bottlenecks and push the boundaries of numerous areas of theoretical physics.
A team of researchers discovered a universal inequality between energy transfer rate, information transfer rate, and Hilbert space size, showing that both require sufficient states to transmit. This breakthrough sheds new light on the challenging problem of calculating these quantities.
Research by the University of Warsaw and Oxford has shown that tachyons, previously thought to contradict special relativity, can actually aid in its understanding. The study reveals that tachyon theory becomes mathematically consistent when incorporating both initial and final states.
Researchers propose a novel approach to correct the leading model of primordial black hole (PBH) formation, aligning with cosmic microwave background observations. This could imply fewer PBHs than expected, potentially affecting the dark matter theory and gravitational wave events.
Physicists at the University of Southampton successfully detect weak gravitational pull on microscopic particles using a new technique. The experiment, published in Science Advances, could pave the way to finding the elusive quantum gravity theory.
A team of researchers has observed bubble formation through false vacuum decay in atomic systems, shedding light on this long-theorized phenomenon. The study confirms the quantum field origin of the decay and its thermal activation, opening up new avenues for understanding early universe and ferromagnetic quantum phase transitions.
Researchers at the University of Innsbruck have developed a new approach to study entanglement in quantum materials. By using a quantum simulator with 51 particles, they were able to extract information about the existing entanglement with drastically fewer measurements than previously thought possible.
Researchers at Rice University have discovered a way to transform a rare-earth crystal into a magnet by using chirality in phonons. Chirality, or the twisting of atoms' motion, breaks time-reversal symmetry and aligns electron spins, creating a magnetic effect.
Researchers have observed the decay of two neutron-rich isotopes, oxygen-28 and oxygen-27, providing new insights into nuclear structure. The study's findings suggest that these isotopes do not exhibit a closed shell structure, challenging current theories and offering opportunities for further investigation.
Researchers identified a new theoretical framework for oscillating superconductivity, which could revolutionize electricity transfer. The discovery provides insight into an unconventional, high-temperature superconductive state seen in certain materials.
Physicists at the University of Konstanz solve a physics mystery by reworking a discarded model, which explains glass's unique sound wave behavior and its implications for thermal properties.
Researchers confirm Stephen Hawking's theory that black holes will eventually evaporate through Hawking radiation. New findings suggest gravity and spacetime curvature cause this radiation, affecting all large objects in the universe.
Researchers have developed a quantum simulator to study curved spacetime, demonstrating phenomena such as gravitational lensing effects in atomic clouds. This new tool provides a deeper understanding of the connection between relativity and quantum theory.
An international research team has confirmed for the first time that mutual information in a many-body quantum system scales with surface area rather than volume. The experiment used ultracold atoms and a special tomography technique to measure the shared information.
Researchers propose a new interpretation of dark energy, linking zero-point fluctuations to polarisability of the vacuum. This leads to an energy density that can be calculated and matches measured values for the cosmological constant.
A seventeen-year study by Maharishi International University found that group meditation decreased multiple stress indicators in the US, resulting in reduced murder rates and improved overall well-being. The study suggests that collective consciousness can create coherence through the unified field level of natural law.
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.
The CPT theorem, a fundamental concept in quantum field theory, has its roots in the early 20th century revolution of quantum mechanics and relativity. The new paper reveals how this theorem's significance evolved over time, from being initially overlooked to becoming a cornerstone of modern physics.
Researchers at MIT and University of Waterloo propose stimulating the Unruh effect to increase its probability of detection, potentially shaving wait time from billions of years to just a few hours. The new approach, known as acceleration-induced transparency, enhances the Unruh effect while suppressing competing effects.
Researchers at Nagoya City University have detected strongly entangled pair of protons on a nanocrystalline silicon surface. This breakthrough could enable the creation of more qubits and ultra-fast processing for supercomputing applications, revolutionizing quantum computing.
Researchers have developed a more efficient method for measuring entanglement in quantum simulators, allowing for new insights into the structure of the quantum state. The new protocol uses insights from quantum field theory to perform tomography with significantly fewer measurements.
A new theoretical framework suggests that dark matter's properties can be explained by the existence of an extra dimension in space-time. The force between dark matter particles is described by a continuum, which could address puzzles seen in small galaxies.
Researchers used HPC resources to run lattice QCD calculations, finding a different value for the Standard Model prediction of muon behavior. The results are consistent with an experimental finding, suggesting that further research is needed to verify the results.
Effective Field Theories were introduced to simplify mathematics involved in unifying interactions. Steven Weinberg shares his expertise on these theories, which unify weak and electromagnetic interactions with the strong interaction. He also discusses implications for future research and applications in diverse areas.
Physicists employ advanced computing to study subatomic particles, pushing the boundaries of our understanding. Theoretical framework quantum chromodynamics governs these interactions, with lattice QCD offering insights into the universe's nature.
Bell's inequalities contrast local realism with quantum mechanics, relevant to security, cryptography, and computing applications.
Researchers have used a multi-institutional approach and the Mira supercomputer to refine one piece of the complex puzzle surrounding the muon anomaly. They found a new result for the hadronic light-by-light scattering contribution, which could indicate a real discrepancy between experimental results and theoretical predictions.
Researchers have produced a new theoretical calculation that refines one piece of the muon anomaly puzzle, sharpening the understanding of how subatomic particles interact. The study uses lattice QCD to analyze hadronic contributions and controls for errors, providing new insights into particle physics.
A team of researchers has found a way to derive quantum field theoretical descriptions for many-particle systems directly from experimental measurements. This breakthrough could simplify the study of complex quantum systems and provide new insights into fundamental questions in physics.
A new study has provided a solid theoretical framework to discuss modifications to the Unruh effect caused by microstructure of space-time. The researchers found that thermal response for particle detectors can happen without a thermal state, contradicting an extended belief.
A Harvard physicist has shown that wormholes can exist and are theoretically useful for quantum gravity research. However, travel through them would be slower than direct travel, making it impractical for space exploration.
Physicists propose a novel method to produce robust Majorana fermions in magnetic materials with different phase boundaries. This could lead to the creation of stable qubits for quantum computers, addressing limitations of current technology. The team plans to experimentally verify their findings using engineered systems.
Researchers aim to improve theoretical and numerical models of intense laser-particle interactions to analyze experiments probing quantum effects. The new research will also help understand exotic phenomena in strong magnetic fields found in astrophysical objects like magnetars.
Physicists Sebastian Deffner and Anthony Bartolotta developed techniques for describing the thermodynamics of very small systems with high energy, which could lead to a better understanding of the birth of the universe. They found that in their model system, the system was more likely to return multiple particles upon sending in just one.
Researchers have developed a new quantum simulation protocol to understand key properties of interacting quantum field theories. The protocol uses cold atoms as controllable quantum sensors to measure the generating functional, a fundamental concept in quantum field theory.
Barry Simon has made significant contributions to mathematical physics, including spectral theory, phase transitions, and geometric phases. His work has deeply influenced generations of researchers through his influential books, such as 'Methods of Modern Mathematical Physics'.
Researchers at TU Wien and Heidelberg University have demonstrated how to test quantum field theories in a quantum simulator, using thousands of ultra cold atoms. This allows for unprecedented study of fundamental quantum processes and their correlations.
Johannes Henn, a leading theorist in scattering amplitudes, will develop new methods to calculate properties of the Higgs boson with greater precision. His work aims to simplify mathematical structures and improve calculations in quantum field theory.
University of Utah mathematicians introduce 'field patterns,' a theoretical framework that describes how disturbances move through materials under varying conditions. This new object exhibits characteristics of both propagating waves and localized particles.
Researchers have found substantial evidence supporting a holographic explanation for the universe's irregularities, as much as there is for traditional theory of cosmic inflation. A holographic universe is one where all information is contained in a 2D surface on its boundaries.
Researchers at PPPL have developed a new method that analyzes the plasma surrounding X-ray pulsars by coupling quantum mechanics with Einstein's special relativity. This technique can determine the density and field strength of the magnetosphere in greater detail than standard approaches.
Valery Lunts and Vladimir Touraev, both from Indiana University, have been named 2016 American Mathematical Society Fellows for their significant work in algebraic geometry, category theory, and low-dimensional topology. The recognition highlights the university's total of 15 AMS fellows across campuses.
A new type-II Weyl fermion has been predicted to exist in metallic materials, exhibiting unique responses to electromagnetic fields. The discovery could lead to potential applications in low-energy devices and efficient transistors.
Barry Simon is receiving the 2016 AMS Steele Prize for Lifetime Achievement in recognition of his groundbreaking contributions to pure mathematics and mathematical physics. His influential books, mentoring, and research have had a lasting impact on generations of mathematical scientists.
Physicists from Warsaw and Nottingham show that in systems moving with enormous accelerations, no clock will accurately measure proper time due to the Unruh effect. This has significant consequences for measurements of space-time.
Researchers at TU Wien found that the holographic principle can hold true even in flat spacetime, confirming its validity in our own universe. This validation suggests that the universe may be a hologram, with three-dimensional space being an image of two-dimensional processes on a cosmic horizon.
Victor Kac will be awarded the 2015 AMS Steele Prize for his groundbreaking contributions to Lie Theory, a powerful means for extracting simple structures from complicated mathematical objects. His work has had a significant impact in nearly every area of mathematics and physics, particularly in the development of Kac-Moody algebras.
Researchers have mathematically described the phase transition between a boring empty space and an expanding universe containing mass. The theory connects quantum field theory and Einstein's relativity, suggesting that time and space can undergo a phase transition similar to liquid-solid transitions.
Researchers tested the spin-statistics theorem, which dictates whether particles are fermions or bosons. They found no evidence of forbidden transitions, strengthening the theory and ruling out photons behaving like fermions.
Researchers at Max Planck Institute for Astrophysics create a system called information field theory (IFT) to reconstruct incomplete image data. IFT asks two questions to determine the probability of images based on measured data and prior knowledge, allowing for optimal reconstruction in areas where telescopes are blind.
Researchers will conduct laboratory experiments and theoretical research to minimize the Casimir force between objects, enabling the design of efficient micro- and nano-machines. The project aims to reduce the Casimir force using different material coatings and specialized coatings to bring about a repulsive Casimir force.
Physicists use ultracold atoms in optical lattices to simulate complex materials like high-temperature superconductors. They successfully detect the Mott insulator, a state of strong electronic interactions, and confirm a key theoretical model.