other
Private research university in Pasadena, California, noted for science and engineering research and for operating NASA's Jet Propulsion Laboratory.
No evidence-backed relationships are recorded.
Caltech physicists measured energy ladders two conformal field theories have predicted for about 40 years, using a line of laser-trapped strontium atoms. It is the known-answer test a simulator must pass before it is trusted on unsolved systems.
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Caltech historians Jed Buchwald and Mordechai Feingold use newly digitized Newton manuscripts to retell the 20 years before his 1687 Principia. Their evidence for the mathematical route is easier to check than their claim that he was sociable.
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UC San Diego and INRIA researchers forged RSA signatures on a 1,024-bit key inside a hardware security module after about 4 billion signing requests. The key stayed inside the device throughout, so for custodians the exposure is in signing settings, starting with the FIPS mode the researchers switched off.
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JWST found water-altered clay minerals on two of Neptune's small inner moons and its rings, with no water ice. The likely source is the shattered interior of a much larger lost moon.
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Caltech-led researchers say the Shunga-Francevillian carbon signal in Russia's 2-billion-year-old Zaonega rocks can be explained by local processes. That weakens one of the two drill-core records long read as evidence of a planetwide carbon-cycle upheaval.
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A Nature paper puts the boundary between stiff and soft Martian mantle directly beneath the surface dichotomy. The authors still keep a giant impact on their list of causes.
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Days after Caltech mathematicians called AI "slop mathematics" research misconduct, OpenAI's research lead said the company would stop sponsoring their competition. Organizers say they are talking to other firms.
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Quantum jumps were caught in trapped ions in 1986 and in photons in 2007. A resonator that rings for two milliseconds, read out by a superconducting qubit, now shows a single phonon going to zero as it happens.
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Shunkai holds its qubits in optical tweezers at room temperature, starts with about 50 of them, and is slated to join a shared supercomputing facility as a quantum-GPU hybrid. Its scale-up target of 10,000 qubits is dated March 2031.
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Frances Arnold's Caltech lab reports in Nature an enzyme, improved by directed evolution, that builds the (S) stereocenter directly, so a step that usually discards half its output no longer has to. It is still proof of concept.
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The American Institute of Mathematics asked for problems where AI could search further than a person can, and Rachel Pries offered the one sporadic group with no known polynomial. Six mathematicians closed it in under three months.
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Bonsai 2 27B keeps 98 percent of Qwen3.8 27B's aggregate benchmark score, up from 95 percent for PrismML's first release, and TechCrunch reports the 5.9GB file is small enough for a PC and possibly a high-end phone.
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Prakash Mishra and his co-authors measured the causal effect of EU land protection over four decades and found nothing on vegetation cover or nighttime lights, and he traces the result to who chose the parcels.
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PrismML's ternary build of Qwen3.8 27B keeps 98.2 percent of the full-precision benchmark average on both of the company's inconsistent scorecards, and the loss it does take is concentrated in knowledge and reasoning.
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Stanford physicists report in Science the first real-time observation of quantum jumps of sound, using a superconducting qubit to check a mechanical resonator hundreds of times during its two milliseconds of vibration.
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Vals AI's 141-hour Minecraft run ended with OpenAI's newest model farming potatoes for hours after losing its end-game loot and its spawn point in one explosion, and the recovery policy it came away with was a note to self.
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A new model puts up to 6.2 miles of sediment under downtown and sharpens the basin's edges, the geometry a USGS seismologist credits for Santa Monica's unexpected damage in 1994. It is an input to shaking simulations.
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Jessie Miller's Caltech team followed VT J1906+0849 across radio, infrared, optical and X-ray data and favors sustained accretion onto a compact object, even though a Swift observation found no X-ray counterpart.
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A Caltech open letter says research mathematicians end up verifying and correcting what AI companies announce, without pay or credit. OpenAI's sponsorship was $1m in credits, and it took them back.
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Two labs put $1 million each of computing power behind a student event that asked what mathematicians are for. One has since withdrawn, and the 19-year-old who pitched it is still dealing with the objections.
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