Novel Conservative Methods for Adaptive Force Softening in Collisionless and Multi-Species N-Body Simulations

Posted by klaurent Peking

Philip F. Hopkins, Ethan O. Nadler, Michael Y. Grudic, Xuejian Shen, Isabel Sands | Summary: [[{“value”:”Modeling self-gravity of collisionless fluids (e.g. ensembles of dark matter, stars, black holes, dust, planetary bodies) in simulations is challenging and requires some force softening. It is often desirable to allow softenings to evolve adaptively, in any high-dynamic range simulation, […]


Continue.. Novel Conservative Methods for Adaptive Force Softening in Collisionless and Multi-Species N-Body Simulations

Novel Conservative Methods for Adaptive Force Softening in Collisionless and Multi-Species N-Body Simulations

Posted by Peking

Philip F. Hopkins, Ethan O. Nadler, Michael Y. Grudic, Xuejian Shen, Isabel Sands | Summary: [[{“value”:”Modeling self-gravity of collisionless fluids (e.g. ensembles of dark matter, stars, black holes, dust, planetary bodies) in simulations is challenging and requires some force softening. It is often desirable to allow softenings to evolve adaptively, in any high-dynamic range simulation, […]


Continue.. Novel Conservative Methods for Adaptive Force Softening in Collisionless and Multi-Species N-Body Simulations

Architectures for Multinode Superconducting Quantum Computers

Posted by klaurent Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: James Ang, Gabriella Carini, Yanzhu Chen, Isaac Chuang, Michael Austin DeMarco | Summary: Many proposals to scale quantum technology rely on modular or distributed designs where individual quantum processors, called nodes, are linked together to form one large multinode quantum computer (MNQC). One scalable method to construct […]


Continue.. Architectures for Multinode Superconducting Quantum Computers

Architectures for Multinode Superconducting Quantum Computers

Posted by Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: James Ang, Gabriella Carini, Yanzhu Chen, Isaac Chuang, Michael Austin DeMarco | Summary: Many proposals to scale quantum technology rely on modular or distributed designs where individual quantum processors, called nodes, are linked together to form one large multinode quantum computer (MNQC). One scalable method to construct […]


Continue.. Architectures for Multinode Superconducting Quantum Computers

Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit

Posted by dbos Delft

Kavli Affiliate: Gary A. Steele | First 5 Authors: Byoung-moo Ann, Sercan Deve, Gary A. Steele, , | Summary: Microwave driving is a ubiquitous technique for superconducting qubits (SCQs), but the dressed states description based on the conventionally used perturbation theory cannot fully capture the dynamics in the strong driving limit. Comprehensive studies beyond these […]


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A Measurement of the CMB Temperature Power Spectrum and Constraints on Cosmology from the SPT-3G 2018 TT/TE/EE Data Set

Posted by Stanford

Kavli Affiliate: Chao-Lin Kuo | First 5 Authors: L. Balkenhol, D. Dutcher, A. Spurio Mancini, A. Doussot, K. Benabed | Summary: We present a sample-variance-limited measurement of the temperature power spectrum ($TT$) of the cosmic microwave background (CMB) using observations of a $sim! 1500 ,mathrm{deg}^2$ field made by SPT-3G in 2018. We report multifrequency power […]


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Upregulated extracellular matrix-related genes and impaired synaptic activity in dopaminergic and hippocampal neurons derived from Parkinson’s disease patients with PINK1 and PARK2 mutations

Posted by klaurent UCSD / Salk

Kavli Affiliate: Fred Gage | Authors: Utkarsh Tripathi, Idan Rosh, Ran Ben Ezer, Ritu Nayak, Ashwani Choudhary, Jose Djamus, Andreea Manole, Henry Houlden, Fred H. Gage and Shani Stern | Summary: Abstract Parkinson’s disease (PD) is the second most prevalent neurodegenerative disease. Primary symptoms of PD arise with the loss of dopaminergic (DA) neurons in […]


Continue.. Upregulated extracellular matrix-related genes and impaired synaptic activity in dopaminergic and hippocampal neurons derived from Parkinson’s disease patients with PINK1 and PARK2 mutations

Structured information extraction from complex scientific text with fine-tuned large language models

Posted by dbos Berkeley

Kavli Affiliate: Kristin Persson | First 5 Authors: Alexander Dunn, John Dagdelen, Nicholas Walker, Sanghoon Lee, Andrew S. Rosen | Summary: Intelligently extracting and linking complex scientific information from unstructured text is a challenging endeavor particularly for those inexperienced with natural language processing. Here, we present a simple sequence-to-sequence approach to joint named entity recognition […]


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Two types of locus coeruleus norepinephrine neurons drive reinforcement learning

Posted by klaurent Hopkins

Kavli Affiliate: Jeremiah Cohen | Authors: Zhixiao Su and Jeremiah Y. Cohen | Summary: Abstract The cerebral cortex generates flexible behavior by learning. Reinforcement learning is thought to be driven by error signals in midbrain dopamine neurons. However, they project more densely to basal ganglia than cortex, leaving open the possibility of another source of […]


Continue.. Two types of locus coeruleus norepinephrine neurons drive reinforcement learning

Assessing the C/O Ratio Formation Diagnostic: A Potential Trend with Companion Mass

Posted by klaurent Stanford

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Kielan K. W. Hoch, Quinn M. Konopacky, Christopher A. Theissen, Jean-Baptiste Ruffio, Travis S. Barman | Summary: The carbon-to-oxygen (C/O) ratio in an exoplanet atmosphere has been suggested as a potential diagnostic of planet formation. Now that a number of exoplanets have measured C/O ratios, it is […]


Continue.. Assessing the C/O Ratio Formation Diagnostic: A Potential Trend with Companion Mass