Sandia National Laboratories’ Post

I am excited to announce that I have started my PhD at the German Aerospace Center. I will explore the influence of long-range interactions on quantum computer hardware platforms. Consider the following: What computable effects do particles have on each other if there are simply too many of them for computers to handle separately and if their properties are lost if "smooth them out" too much? Andreas A. Buchheit and Torsten Keßler tackle this problem by introducing the singular Euler-Maclaurin expansion, which I am excited to study extensively in the months to come. https://lnkd.in/eR2_8GRw

𝙃𝙖𝙫𝙚 𝙮𝙤𝙪 𝙚𝙫𝙚𝙧 𝙬𝙤𝙣𝙙𝙚𝙧𝙚𝙙 𝙬𝙝𝙖𝙩 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩 𝙬𝙖𝙮 𝙞𝙨 𝙩𝙤 𝙥𝙖𝙘𝙠 𝙖 𝙛𝙞𝙣𝙞𝙩𝙚 𝙣𝙪𝙢𝙗𝙚𝙧 𝙤𝙛 𝙞𝙙𝙚𝙣𝙩𝙞𝙘𝙖𝙡 𝙨𝙥𝙝𝙚𝙧𝙚𝙨 𝙞𝙣𝙩𝙤 𝙖 𝙨𝙝𝙖𝙥𝙚-𝙨𝙝𝙞𝙛𝙩𝙞𝙣𝙜 𝙛𝙡𝙚𝙭𝙞𝙗𝙡𝙚 𝙘𝙤𝙣𝙩𝙖𝙞𝙣𝙚𝙧, 𝙡𝙞𝙠𝙚 𝙖 𝙘𝙤𝙣𝙫𝙚𝙭 𝙝𝙪𝙡𝙡? ⚫ 🤔 Researchers from the University of Twente along with Universiteit Utrecht , have investigated this fascinating mathematical sphere-packing problem by combining experiments and computer simulations. This research has been published in Nature Communications. An intuitively simple problem concerning the best way to pack a set of spheres has a long history of studies dating back to the 17th century. The British sailor Raleigh, for instance, contemplated this issue while trying to find an efficient method for stacking cannonballs on his ship. 💡 Click to learn more about this fascinating mathematical phenomenon 🇳🇱 https://lnkd.in/dcBFQEf6 🇬🇧 https://lnkd.in/ddZKUSBj Hanumantha Rao Vutukuri #mathematics #spherepacking #utwente

📚 How can we optimize 𝐽𝑜𝑠𝑒𝑝ℎ𝑠𝑜𝑛 𝑇𝑟𝑎𝑣𝑒𝑙𝑖𝑛𝑔 𝑊𝑎𝑣𝑒 𝑃𝑎𝑟𝑎𝑚𝑒𝑡𝑟𝑖𝑐 𝐴𝑚𝑝𝑙𝑖𝑓𝑖𝑒𝑟𝑠 (JTWPAs) while avoiding chaotic behavior? 📚 💡 In our latest research, we conduct a numerical study of the dynamic response of JTWPAs, exploring how different driving parameters influence the transition to chaos. ⚙️ By analyzing gain characteristics, Poincaré sections, and Fourier spectra, we also reveal the impact of non-sinusoidal current-phase relations on amplifier performance. The simulations were performed using parameters aligned with devices developed within the INFN DARTWARS collaboration🔗. 📊 Our findings highlight specific regions in the parameter space where signal amplification is maximized, minimizing noise and undesired harmonics. 📄 Full details in our open-access paper: https://lnkd.in/dD4sEnm3 Sergio Pagano, Andrea Giachero

Delighted that after ten years of advocating for the importance of the #inverseproblem in #latticeQCD at finite temperature [1] and developing improved Bayesian methods [2] the message has reached the T=0 #lattice community, which now embraces spectral function reconstructions in full force in William Jay's plenary presentation at #Lattice2024 at University of Liverpool. Having started in 2017, the T=0 community seems to limit itself still to purely linear methods, which are all equivalent by coordinate transforms. Good to see their recent realisation that their methods can be understood in the more general Bayesian framework. A point that I have remarked on previously e.g. in my review [3]. Excited by recent results on the smeared R-ratio by Jian Liang based on the non-linear BR method [4], which can exploit relevant prior information such as positivity of spectral functions, which linear methods are oblivious to. Progress towards precision determination of relevant physics quantities ahead! [1] see our recent University of Washington INT workshop https://lnkd.in/dFr5-Kwv organized with Martha Constantinou, Chris Monahan & Ingo Tews [2] see the BR method original paper https://lnkd.in/dPvDBRAp [3] see my review https://lnkd.in/dyGikVXs [4] see slides from the recent INT workshop at https://lnkd.in/dfB2GGFN

3.1415...Pi! Happy Pi Day from Johns Hopkins APL! 🥧 Whether we're using pi to compute the length of time it takes to orbit a planet, calculate the actuators on an aircraft’s wings or utilizing the mathematical constant in computer algorithms, π brings the science and engineering of many Johns Hopkins APL missions full circle. #JHUAPL | #Pi | #PiDay | #SpaceScience | #Mathematics | #HappyPiDay

From cracking an egg to Lock-Out / Tag-Out in industry. I really enjoyed this talk. At one time, category theory was considered so abstract, that no actual industry applications would come from it. Time has proven just the opposite. We're only at the tip of the iceberg. Isaiah Hilsenrath begins the talk with a great introduction to linear logic, and a favorite topic of mine - resource theories. Once you use something, it's gone. So there's a cool discussion on cracking an egg. Now you have a yolk. What do you with that? Where do send it? How do we talk about this? From this introduction, Brandon Baylor begins (at about 11 minutes), taking our cooking example and describing a way to model complex industrial systems. Managing and servicing these systems safely requires new conceptual tools. How do you isolate hazardous energy and shut down things that could cause an accident? This is the subject of Lock-Out / Tag-Out which gets more complicated by the day as we expect more from complex systems. Fascinating talk from Holon Labs Foundation as we are now looking at high profile accidents in the news from Texas wildfires and electrical equipment to the Baltimore Bridge collapse. Category Theory is stepping up!

❓ How to Run Adaptive Experiments? ❗ This question will be answered in tomorrow's lecture by Prof. Davud Rostam-Afschar, Professor at Collaborative Research Centre TRR 266. His lecture provides an introduction to batched bandit experiments. We will discuss how to simulate, interactively run, and analyse batched bandit experiments. The lecture presents results from Monte Carlo simulations. We will study how to obtain valid statistical inference and correct coverage and discuss a wide range of statistics and illustrations to analyse adaptively collected data. The objective is to learn how to implement own batched bandit experiments. 📍 Everybody interested is welcome to join (please register via our website to access the link: https://lnkd.in/d2VqGrgH)

Here is how the Concrete Science and Technology Institute (Building Resilient - ICITECH) of the Universitat Politècnica de València uses Extreme Loading® for Structures #ELSSoftware in their research for Progressive Collapse.

Congratulations to Feras Alshehri for presenting his MS research work for his thesis and our Cal State Chico sensor fusion research group today at AIAA SciTech Orlando. His paper “Improving State Observation and Model Prediction by Comparing Sensor Fusion with Machine Learning for Mission Critical Systems” has set the stage for interesting follow on work comparing various machine learning methods in the future with traditional filtering dynamic models and allows for increasing complexity by adding degrees of freedom. Here’s the link - https://lnkd.in/dQR9KCvJ

#TBT First, if you have not seen already, there will be an excellent opportunity to get an introduction to quantum solvers for differential equations, and specifically with applications in fluid dynamics. I will be giving few lectures at the von Karman Institute for Fluid Dynamics (nearby Brussels) with the possibility of joining online - tune in! Check out the schedule below. #quantum #scientificcomputing #machinelearning