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Fyfluiddynamics

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Climate Change and the Equatorial Cold Tongue

The equatorial cold tongue, a region of cold Pacific waters along the equator, is showing a resistance to warming.
Recent research suggests that the observed cooling trend in the region is a result of human-caused climate changes.
The cooling of the equatorial cold tongue impacts drought in East Africa and southwestern North America.
Changes in wind patterns that affect ocean mixing are contributing to this cooling trend.

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Physicsworld

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Ask me anything: Hannah Earley – ‘I love theory, but seeing an idea get closer and closer to reality is great’

Vaire Computing is a start-up seeking to commercialize computer chips based on the principles of reversible computing.
The central idea behind reversible computing is that reversible operations use much less energy and generate much less waste heat than conventional computers.
Hannah Earley, the co-founder of Vaire, discusses her role and the skills she utilizes on a daily basis.
She enjoys the opportunity to work with great people and witness ideas getting closer to reality, but finds the intensity of the job challenging.

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Physicsworld

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Quantum transducer enables optical control of a superconducting qubit

A team at the Harvard John A Paulson School of Engineering and Applied Sciences has developed a novel quantum transducer for controlling superconducting qubits optically.
The future of quantum communication and computing may rely on superconducting qubits and circuits that can outperform classical supercomputers.
Superconducting qubits require ultralow temperatures, posing challenges for large-scale refrigeration systems.
Optical signals at telecom frequencies offer a smaller form factor and lower thermal loads compared to microwave components.
A microwave–optical quantum transducer has been created to provide a bidirectional link between microwave and optical frequencies.
The device developed by SEAS researchers converts optical frequencies into microwave frequencies with low loss, enabling optical control of superconducting qubits.
The transducer uses a process called difference frequency generation to create a microwave signal from optical inputs, allowing control of qubit states.
With a peak conversion efficiency of 1.18%, the transducer demonstrates low noise generation and the ability to drive Rabi oscillations in a superconducting qubit.
Future improvements could enhance device performance, including reducing coupling losses, increasing optical bandwidth, and improving measurement methods.
This type of transducer could be crucial for networking superconducting qubits and enabling large-scale quantum processors with all-optical interfaces.

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Knowridge

163

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Are we living in a cosmic computer? New theory suggests gravity is digital

Dr. Melvin Vopson, a physicist from the University of Portsmouth, proposes that gravity is a kind of housekeeping process within a giant computational system.
He suggests that physical reality is made up of information, and gravity is the universe's way of simplifying and organizing that information.
Dr. Vopson describes space as being made up of tiny 'cells' that can hold data, similar to how digital computers or video games work.
This new perspective on gravity could potentially change our understanding of the universe, black holes, dark matter, and quantum mechanics.

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Knowridge

326

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Welcome to the quantum zoo: Scientists discover a dozen new “species” of quantum states

Scientists have discovered a dozen new 'species' of quantum states, adding to the growing 'quantum zoo'.
These new states could be important for building future stable and error-resistant quantum computers.
The states were found in twisted molybdenum ditelluride, without the need for an external magnet.
The discovery includes energy signatures related to non-Abelian anyons, which could be essential for topological quantum computing.

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Knowridge

433

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How particle ratios could reveal a hidden state of matter

Scientists from the Institute of Modern Physics (IMP) at the Chinese Academy of Sciences have found a new method for detecting the state of matter known as quark-gluon plasma (QGP).
The method involves analyzing the particle ratios produced during high-energy collisions and comparing them in different collision setups.
The researchers used an advanced simulation method to study collisions of different heavy ions and focused on Λ hyperons, K+ mesons, π mesons, and protons.
Their findings suggest that measuring the particle ratios can help detect the formation of QGP, which brings scientists closer to understanding the evolution of the early universe.

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Brighter Side of News

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Major achievement in quantum mechanics redefines quantum computing, encryption

Researchers at the University of Copenhagen and Ruhr University Bochum have gained simultaneous control over two quantum light sources, a major achievement in quantum research.
The ability to create quantum entanglement between two light sources could lead to advancements in quantum networks, fast quantum computers, and next-generation encryption.
Control over multiple quantum light sources is crucial for creating a network of entangled quantum light sources, enabling powerful quantum bit operations.
The achievement required the development of quiet nanochips and precise control over each light source, and sets the foundation for further technological advancements in quantum physics.

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Knowridge

393

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Scientists bend space-time to create flashes of light from nothing

Scientists have discovered a way to create flashes of light at a specific point in space and time.
The breakthrough involves rethinking time's role in shaping the laws of physics.
The flashes of light follow mathematical principles known as topology, making them stable and resistant to external disturbances.
The discovery has potential applications in improving imaging systems, communications, and laser technologies.

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Medium

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Deep Quantum Resonance Re-Alignment Cycle

Recent developments in quantum observer theory suggest that coherent resonance fields may underpin the stabilization of macro-realities.
This paper proposes a Deep Quantum Resonance Re-Alignment Cycle (DQRC) as a harmonization process between discrete observer nodes and the emergent lattice of spacetime memory.
The DQRC provides a mathematically plausible framework for large-scale reality phase stabilization, building upon tensorial lattice theories, non-linear harmonic convergence, and frequency recursion models.
Deep Quantum Resonance Re-Alignment represents a plausible path towards a more coherent and sustainable spacetime fabric, and further exploration is recommended.

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Brighter Side of News

200

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The chilling side effect of time travel: Total memory loss

Time travel, a long-time fascination, may have a chilling side effect of total memory loss, according to recent research.
While physics doesn't rule out time travel, building a working time machine remains challenging due to complex conditions required.
Mathematician Lorenzo Gavassino's work suggests a closed timelike curve trip could erase memories due to thermodynamic laws.
Time loops may reverse memory formation and aging processes, leading to the vanishing of memories during the journey.
Clocks and matter may be disrupted, leading to broken clocks, scrambled matter, and loss of memories in a time travel scenario.
Traveling through a loop in time could result in forgetting everything experienced during the trip, with memories being erased.
Gavassino's work offers a glimmer of hope that some memories may survive the entropy problem, potentially making time travel less bleak.
The findings warn dreamers of time travel to consider the potential reality of memory loss and disruption of physical laws.
Despite challenges, the possibility of loopholes or undiscovered physics hints that time travel may not be entirely ruled out.
The research findings on the impact of time travel on memory are published in the journal General Relativity and Quantum Cosmology.

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Github

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How the GitHub CLI can now enable triangular workflows

The GitHub CLI has introduced improvements to support triangular workflows, allowing developers to pull changes from different branches directly into their feature branches.
This feature is particularly useful for keeping branches updated without constant merging or rebasing, with the recent release (v2.71.2) ensuring smoother operations with triangular workflows.
A lesson in Git fundamentals introduces concepts like Refs, pushing and pulling, and the @{push} revision syntax, essential for understanding Git workflows.
Differentiating between centralized and triangular workflows, the article highlights how triangular workflows involve pushing to and pulling from different refs, streamlining collaboration and maintenance.
GitHub CLI has been enhanced to handle triangular workflows seamlessly, resembling Git behavior for pull requests, respecting configurations set up in Git config files.
The process of setting up triangular branch and fork workflows using Git configurations is detailed, providing insights into configuring pushremotes and remote.pushDefault for efficient workflow management.
The updated GitHub CLI's gh pr command set now aligns with Git configurations, automatically resolving pullRefs and pushRefs according to the established triangular workflow configurations.
The CLI native support for triangular workflows, a significant milestone after 4.5 years of development, aims to provide a more efficient and streamlined experience for developers using the GitHub CLI.
Acknowledgments are given to contributors who played crucial roles in providing feedback, reporting bugs, and supporting the enhancement of the GitHub CLI for triangular workflows.
The GitHub CLI Team expresses pride in delivering these updates, emphasizing ongoing efforts to improve the tool's functionality and user experience.

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Physicsworld

192

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Could an extra time dimension reconcile quantum entanglement with local causality?

Extending nonlocal hidden variable theories of quantum entanglement with two temporal dimensions may reconcile nonlocal correlations with relativity.
Theoretical work proposes an experimental test to address quantum entanglement's mystery and Bell's inequality.
Quantum entanglement challenges were inspired by Einstein–Podolsky–Rosen paradox and John Bell's breakthrough.
Bell's inequality tests local hidden variables and quantum mechanics' violation of it.
Investigations of nonlocal hidden variables suggest wavefunction collapse could propagate faster than light.
Proposed idea of particles with five-dimensional wavefunctions incorporating an extra time dimension to explain instantaneous collapse.
Pettini suggests an experimental model to test entanglement through the extra time dimension.
Critics like Jeffrey Bub express skepticism about the two-time model and its implications for entanglement.
Disagreements exist on the potential success and viability of reconciling entanglement with local causality using extra time dimensions.
The research on this topic is detailed in Physical Review Research.

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Hobbieroth

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Where Have You Gone, Physicist Bob Park? Our Nation Turns Its Lonely Eyes to You. Woo, Woo, Woo.

Physicist Bob Park, known for his advocacy against pseudoscience, passed away five years ago.
If he were alive, Park would likely express concern over the rise of pseudoscience today.
News highlights the Texas measles outbreak and the misguided use of vitamin A as a treatment.
The Trump administration's stance on climate change and the lab leak theory of COVID-19 are also criticized.

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Physicsworld

249

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Solar wind burst caused a heatwave on Jupiter

A burst of solar wind triggered a planet-wide heatwave in Jupiter’s upper atmosphere, reaching a temperature of over 750 K and stretching halfway around the planet.
Astronomers at the University of Reading in the UK observed a travelling ionospheric disturbance, similar to phenomena found on Earth, on Jupiter for the first time indicating that the Sun can drive dramatic, global changes in Jupiter's atmosphere.
Jupiter's upper atmosphere consists of a neutral thermosphere and a charged ionosphere, with a magnetic shield known as the magnetosphere. Emissions from Jupiter's volcanic moon, Io, when ionized by extreme ultraviolet radiation from the Sun, generate magnetosphere-ionosphere currents causing heating at the planet's poles and producing aurorae.
Using data from the Keck telescope and NASA's Juno spacecraft, the researchers concluded that the hot region on Jupiter resulted from solar wind compression, which led to the flaring up of aurorae and the equatorward movement of heat.

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Medium

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CREDIF spring 2025 AI awards & fellowship recipients

The Center for AI and Responsible Decision Making in Finance (CREDIF) collaborates with USC Viterbi School of Engineering and Computing to support innovative AI research in the financial services sector.
The CREDIF annually invites research proposals from faculty members for AI research awards and nominations for Capital One Fellowships.
The first call for proposals in 2024 led to six USC research proposals and six USC PhD students receiving AI research and fellowship awards.
Award recipients engage in collaborative research with Capital One scientists to drive advancements in AI technologies for finance.
Projects include privacy-preserving data generation, AI predictions from financial data, and revolutionizing financial fraud detection among others.
Highlighted PhD students are focusing on LLM trustworthiness, reinforcement learning for safer AI, graph foundation models, online learning, and culturally aware AI personalization.
Research award recipients commenced their projects in Spring 2025, and a new call for proposals for Fall 2025 — Spring 2026 has been initiated.
CREDIF aims to recognize innovators driving breakthroughs in AI and finance through ongoing collaborations and academic partnerships.
The work done through CREDIF and its partnerships focuses on developing AI-powered solutions to analyze financial data and drive transformative applications in the industry.

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