Matt von Hippel writes about how researchers at Anthropic successfully challenged an LLM to solve a complex problem in theoretical particle physics by computing a nine-loop amplitude in N=4 super Yang-Mills. The task involved using the bootstrap method and form-factor approaches through Claude Science, demonstrating that AI can autonomously manage long-running computational tasks with high reliability without constant human oversight.
- The calculation was performed using Fable 5.1 within the Claude Science platform.
- While humans have calculated up to eight loops in this toy model, no one had yet reached nine loops directly.
- The computation cost approximately $100 when using Python and SymPy for the bootstrap method.
- Physicist Lance Dixon validated that the result was correct by checking it against a form-factor approach he has been working on for two years.
- The calculation was performed using Fable 5.1 within the Claude Science platform.
- While humans have calculated up to eight loops in this toy model, no one had yet reached nine loops directly.
- The computation cost approximately $100 when using Python and SymPy for the bootstrap method.
- Physicist Lance Dixon validated that the result was correct by checking it against a form-factor approach he has been working on for two years.
Deep Field writes that the Canadian Hydrogen Intensity Mapping Experiment (CHIME) has released a second catalog containing 4,539 fast radio bursts from 3,641 distinct sources. These observations were collected over more than five years of continuous sky-watching between July 2018 and September 2023 using a unique telescope in British Columbia that features four stationary half-pipe reflectors with no moving parts.
- The telescope uses digital signal processing to form 1,024 beams electronically rather than physically steering dishes.
- Of the detected bursts, 981 originated from 83 known repeating sources.
- Fast radio bursts can be used to map the distribution of diffuse, low-density gas between galaxies by analyzing dispersion measures.
- Magnetars are currently a leading candidate for the physical source of these cosmic explosions.
- The telescope uses digital signal processing to form 1,024 beams electronically rather than physically steering dishes.
- Of the detected bursts, 981 originated from 83 known repeating sources.
- Fast radio bursts can be used to map the distribution of diffuse, low-density gas between galaxies by analyzing dispersion measures.
- Magnetars are currently a leading candidate for the physical source of these cosmic explosions.
The Large Hadron Collider (LHC) has entered Long Shutdown 3 (LS3), marking the end of a significant operational era and the beginning of a major upgrade phase. This period involves extensive maintenance, such as replacing 1.2 kilometers of magnets, to prepare for the High-Luminosity LHC (HiLumi LHC). Scheduled to begin operation in 2030, the HiLumi LHC aims to increase luminosity tenfold, allowing for more precise studies of the Higgs boson and other fundamental particles. During the shutdown, experiments like ATLAS and CMS will undergo significant detector upgrades to manage increased collision rates.
- Transition to the High-Luminosity LHC (HiLumi LHC)
- Major maintenance and magnet replacement projects
- Extensive upgrades to ATLAS and CMS detectors
- Continued scientific research through data analysis
- Transition to the High-Luminosity LHC (HiLumi LHC)
- Major maintenance and magnet replacement projects
- Extensive upgrades to ATLAS and CMS detectors
- Continued scientific research through data analysis
The Vera C. Rubin Observatory in Chile is ushering in a new era of big-data astronomy by creating an expansive time-lapse movie of the night sky over the next decade. Preliminary data from the observatory has already revealed fascinating phenomena, including exceptionally fast-rotating large asteroids and early detections of interstellar visitors.
Physicists may have uncovered evidence that string theory is a natural consequence of fundamental physical laws rather than just an assumed mathematical framework. Using the bootstrap approach, researchers started with basic principles regarding particle behavior at extreme energies and found that the resulting equations automatically produced the defining characteristics of string theory. This study suggests that the universe's structure might be a necessary outcome of simple rules governing particle collisions.
- The unexpected emergence of the infinite tower of particles known as the string spectrum from basic assumptions.
- Use of the bootstrap method to investigate high-energy scattering amplitudes without assuming strings exist beforehand.
- How string theory's property of ultrasoftness helps avoid the mathematical infinities encountered in quantum gravity.
- The unexpected emergence of the infinite tower of particles known as the string spectrum from basic assumptions.
- Use of the bootstrap method to investigate high-energy scattering amplitudes without assuming strings exist beforehand.
- How string theory's property of ultrasoftness helps avoid the mathematical infinities encountered in quantum gravity.
Physicists led by Nicola Bortolotti suggest that time might possess an inherent, microscopic jitter rather than ticking perfectly. This theoretical finding stems from research into how spontaneous wavefunction collapse—the process where quantum possibilities settle into single outcomes—might interact with gravity and spacetime. While the predicted fluctuations are currently too small to be detected by even the most advanced atomic clocks, they offer a potential mathematical bridge between the conflicting realms of quantum mechanics and general relativity.
An exploration of how Global Positioning Systems translate time into distance to determine location. The article explains the fundamental mechanics of trilateration, why a fourth satellite is required to correct for imperfect consumer clocks, and how Einstein's theories of special and general relativity must be accounted for to prevent massive positioning errors.
This article examines the current status of string theory as a candidate for a "theory of everything." Despite decades of research and mathematical elegance, string theory faces challenges like untestability and a vast landscape of possible solutions. However, recent developments in a technique called "bootstrapping" suggest that string theory might be uniquely determined by fundamental principles. Researchers are exploring whether these methods can revive the field and address criticisms that it's "not even wrong." The article explores the historical development of string theory, its mathematical strengths, and the ongoing debate about its relevance to the real world.
A new proposal suggests that complexity increases over time, not just in living organisms but in the nonliving world, potentially rewriting notions of time and evolution. Researchers propose a law where entities are selected for richness in information enabling function, challenging traditional views and sparking debate about its testability and implications for understanding the universe.
Quantum Darwinism: Zurek argue that certain quantum states ("pointer states") are better at creating multiple, identical copies of themselves in the environment through entanglement. This "survival of the fittest" information is what we perceive as classical reality. The environment essentially "selects" these states, leading to a shared, objective reality.
