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A nuclear clock based on $^{229}$Th
Announce Type: new Abstract: Atomic clocks have made time and frequency the most precisely measured quantities in physics, progressing from microwave standards that realize the SI second to optical clocks that now reach unprecedented levels of precision. A nuclear clock would shift the frequency reference from an electronic transition to the uniquely low-lying, laser-accessible isomeric transition in the $^{229}$Th nucleus, offering a route to compact, robust timekeeping and sensitive tests...
Small-Signal Analyses Using Analytical IBR Models and Frequency-Dependent Th\'evenin Equivalents
arXiv:2606.04538v1 Announce Type: new Abstract: This paper investigates whether component-level studies can capture additional interactions through Small Signal Analysis (SSA) when the network connected to the Voltage Source Converter (VSC), typically modeled as a simple Thevenin Equivalent, is a more complex IBR-based network. The research investigates cases ranging from basic analytical to an IEEE 9-Bus EMT model, with and without Inverter-Based Resources (IBRs), synthesized as State-Space...
Intel on intriguing NBA free agents: What execs th...
What league insiders are saying about the lingering decisions for Austin Reaves, Jalen Duren and Mitchell Robinson this offseason.
Limitations of Taylor hypothesis in a forest clearcut flow
arXiv:2507.12069v3 Announce Type: replace Abstract: Taylor's hypothesis (TH) converts temporal observations to spatial information of the flow while carrying out measurements on a micrometeorological tower. Other than TH, there exists a more general elliptic model, which converts time to space by focusing on the geometry of the space-time correlation function. In elliptic model, TH is recovered when the space-time correlation functions are straight lines and when TH is invalid, they are...
Multi-dimensional parameter space of higher-order exceptional points induced by Brillouin optoacoustics
arXiv:2606.05064v1 Announce Type: new Abstract: Exceptional points (EPs) are degeneracies in the spectrum of non-Hermitian systems, where both the eigenvalues and eigenvectors coalesce. In the vicinity of an n-th order EP, the eigenvalues generally show n-th-root dependence on the system parameters, making EPs potentially promising candidates for ultra-sensitive measurements.
Multiplexed dopamine neurons predominate in the ventral midbrain of young macaques
Dopamine (DA) is important in many fundamental behaviors, including positive and negative reinforcement, incentive salience, and decision-making. This behavioral diversity is now known to be due, in part, to neurotransmitter diversity, based on rodent models. To address DA neuron transmitter properties in higher species, we examined the ventral midbrain in 5 young macaques (3 male, 2 females, 3-6 years) using RNAscope in situ hybridization for tyrosine hydroxylase (TH), vesicular glutamate...
Experimental Tests of Radio-Frequency Heating Saturation in Ultracold Neutral Plasmas
arXiv:2606.02821v1 Announce Type: new Abstract: For non-resonant radio-frequency (RF) fields, electron heating in sufficiently collisional plasmas can be driven primarily by inverse bremsstrahlung absorption. When the quiver velocity v_osc approaches the electron thermal velocity v_th, theory often predicts sublinear scaling of the heating rate with RF power, indicating saturation.
[Written Question] Lord Doyle
Lord Jackson of Peterborough Answering Body: Cabinet Office Question: To ask His Majesty's Government, further to the Written Answer by the Paymaster General and Minister for the Cabinet Office on 10 March (HC114884), whether the investigation into Lord Doyle will report to the Prime Minister in his capacity as leader of th
Module Lattice Security (Part II): Module Lattice Reduction via Optimal Sign Selection
arXiv:2604.22900v2 Announce Type: replace Abstract: We extend the CDPR's quantum attack from ideal lattices to module lattices over $2^k$-th cyclotomic rings. Using trace orthogonality of the power basis, we decompose a rank-$d$ module into mutually orthogonal rank-$1$ submodules, and apply CDPR's analysis to each independently and return the shortest candidate. The Hermite factor $\exp(\tilde{O}(\sqrt{n}))$ matches the ideal case, with a module reduction factor $\alpha_d=O(1)$ independent...
Nvidia launches ‘superchip’ putting AI power into laptops and PCs
Firm says its RTX Spark PC chip for Microsoft Windows will let AI agents replace the mouse and keyboardBusiness live – latest updatesA new front has opened up in the battle for dominance in AI chips, as Nvidia said its latest development could replace the mouse and keyboard in how people use computers. The $5tn (£3.7th) US semiconductor company has launched a “superchip” that puts AI capabilities into laptops and desktop computers, a move that will pit it against Intel, Apple, Qualcomm and AMD.