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The Department of Physics is hosting UConn-NSF summer school on Parton Saturation and Electron Ion Collider (EIC). The School will take place in Storrs, from August 1 to August 10, 2023. The school chair is Professor Alex Kovner. The school website can be found at https://www.phys.uconn.edu/Conferences/saturation-eic/.
The Electron-Ion Collider is the next big experiment in high-energy nuclear physics. It is going to address a plethora of questions about the structure of protons and nuclei. One of the main exciting phenomena that it is intended to clarify is the manifestations of parton saturation. This has been predicted to occur in hadrons at high energy as well as in nuclei at lower energies. Although tantalizing hints of saturating behavior have been observed at Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Lab and the Large Hadron Collider (LHC) at CERN, no cut-and-dry experimental case has been made for it yet. We hope that the experiments on nuclei at EIC will provide a convincing case for saturation. Another important aspect of EIC physics is scattering on polarized proton beams, which should improve our understanding of the so-called “proton spin crisis”.
The school is intended to graduate students and postdocs who want to extend their physics horizons or plan to pursue research in this or related areas. A preliminary list of lecturers at the school includes A. Mueller (Columbia), O.Hen (MIT), N. Armesto (Santiago de Campostela), A. Dumitru (CUNY, Baruch College), Yu. Kovchegov (Ohio State), L. Jin (UConn), V. Skokov (North Carolina State), B. Schenke (BNL). The schedule of lectures is available on the school website at https://www.phys.uconn.edu/Conferences/saturation-eic/
Jeff Schweitzer (second from right) shown together with PhD student Fridah Mokaya (second from left) following her PhD defense in May, 2018. Also shown standing beside Fridah are husband Jonathan and daughter Jenise, with faculty advisors Richard Jones (left) and Peter Schweitzer (right).
Jeff Schweitzer passed away unexpectedly last year on May 31, 2022 in his home in Ridgefield, CT. Jeff was a faculty member in the physics department for 25 years (1997-2022). Jeff earned his B.S. in Physics from the Carnegie Institute of Technology (1967), and his M.S. (1969) and Ph.D. (1972) in physics from the Purdue University conducting research in low-energy nuclear physics. After his postdoctoral research at the California Institute of Technology (1972–1974) he worked as scientific advisor at Schlumberger-Doll Research (1974–1996) where he employed his expertise in nuclear experimental techniques to applications in geology and developed several patents. Jeff served for 35 years on the editorial boards of the Journal of Nuclear Geophysics (1987-1993) and Applied Isotopes and Radiation (1993-2022). A skilled nuclear experimental physicist, Jeff applied his expertise to a wide variety of fields: from fundamental experimental nuclear physics, to astrophysics, to studies of the nanoscale kinetics in cement chemistry, to instrumentation development with applications in medical physics, forensic science, and planetary mission satellites and landers.
Jeff taught at the Waterbury campus for several years, and was a devoted mentor for his students. At UConn, he was the PhD advisor for Nada Jevtic (Phd 2003) who is now faculty at the Bloomsburg University, Tim Spillane (PhD 2008) who works now as data scientist at Hiya Inc, and James Zickefoose (PhD 2011) who is now Senior Research Scientist at Mirion Technologies, Inc. in Meriden, CT. Jeff was the mentor and co-advisor for many more PhD students including Fridah Mokaya who was Jeff’s most recent advisee. Jeff also mentored junior UConn faculty including Howard Winston and Peter Schweitzer (not related to Jeff despite the same last name).
Howard Winston recalls that Jeff went out of his way to help him during his early days at UConn. He was extraordinarily generous with his time explaining his teaching philosophy and sharing course materials. While doing so, Jeff was never overly didactic. He enjoyed talking about areas where his approaches could be customized or improved. Jeff loved to keep in touch to see how things were going. In common with others, Howard misses his warm smile and sage advice.
Fridah Mokaya recalls: “I will forever treasure this memory as it is a constant reminder of Jeff’s dedication as an advisor and mentor. Jeff greatly influenced the career path I took, I remember when I was not certain of what to do or which path to take post graduation, his words of wisdom and guidance enabled me Identify my strength and passion. He was not only an advisor and mentor but also a great friend, who would constantly call, text, email and visit to check on how everything was progressing. I will greatly miss his advice and words of wisdom.” The picture taken after Fridah’s PhD defense shows Jeff Schweitzer (second from the right) together with Fridah, her husband and daughter (middle), Richard Jones (left, main advisor) and Peter Schweitzer (right, associate advisor).
More information about Jeff can be found in the news article of the Institute of Materials Science, in Jeff’s obituary and in the article in the journal Applied Radiation and Isotopes. Many of Jeff’s articles and scientific contributions can be found on the Research Gate website.
Galaxy clusters are the most massive objects in the Universe: a single cluster contains anything from a hundred to many thousands of galaxies, alongside collections of plasma, hot X-ray emitting gas, and dark matter. These components are held together by the cluster’s own gravity. Understanding such galaxy clusters is crucial to pinning down the origin and continuing evolution of our universe. An article recently published in Proceedings of the National Academy of Sciences describes using of machine learning algorithms to solve a fundamental problem in astrophysics: inferring the mass of galaxy clusters. “Measuring how many clusters exist, and then what their masses are, can help us understand fundamental properties like the total matter density in the universe, the nature of dark energy, and other fundamental questions,” says co-author and UConn Professor of PhysicsDaniel Anglés-Alcázar.
A University chapter of Optica (formerly known as OSA), the largest professional society for Optics and Photonics, has started at UConn. Physics graduate students Zhanna Rodnova and Kevin Watson, and Electrical and Computer Engineering graduate student Gokul Krishnan started the chapter in the Fall of 2022 to help students, undergraduate, and graduate, learn more about the world of optics and the professional opportunities within the field. Chapter of Optica, UConn is also organizing tours of laser and optics companies to give students further insight into possible careers after graduation. Additionally, the Optica Chapter holds social events, with the next social on Wednesday, April 12th at 6:30 pm at Hops 44, where everyone is welcome to learn more about optics and photonics research.
On April 21st, the Chapter will host its first Traveling Lecturer. Dr. Gregory Quarles, CEO of Applied Energetics, Inc. and former Chief Scientific Officer of Optica, to talk about career paths for students and early-career professionals. The colloquium will be at 3:30 pm in GW-002, with refreshments served in the Gant Light plaza. For any information, contact uconnoptica@gmail.com.
Founding members of the UConn Chapter of Optica (from left): Kevin Watson,, Zhanna Rodnova, and Gokul Krishnan
This year, international conferences have begun to come back into their pre-pandemic form. For the American Physical Society’s annual March Meeting, it was bigger than ever with over 12,000 participants in the world’s largest meeting ever devoted to physics. UConn showed strong as graduate students, postdoctoral fellows, research scientists, and faculty researchers attended the meeting in Las Vegas March 5-10 and showcased their newest results. The team rolled in deep and gave diverse presentations to an international audience on many topics in condensed matter physics, ranging from high-fidelity electronic structure calculations and material modeling, synthesis and characterization of new materials with competing states, advances in industrial science related to advanced manufacturing, synchrotron-based investigations of correlated materials, nanoscale magnetic imaging studies, the development of new cryogenic instrumentation, twistronic effects, vortices in topological materials and circuit-based quantum information science. See you next year!
From left to right: Jacob Pfund, Bochao Xu, Joshua Bedard, Ilya Sochnikov, Gayanath Fernando, Jacob Franklin, Jason Hancock, Donal Sheets, Kaitlin Lyszak
Not pictured: Krishna Joshi, Guang Chen (MSE), Jorge Chavez, Priya Sharma, Alexander Balatsky, Pavel Volkov.
Gary Dean Bent, 82, a former assistant head of the Physics Department at the University of Connecticut for 23 years, passed away on Friday, March 3, 2023. He was born on October 9, 1940, in Battle Creek, Michigan. Growing up in Florida, he studied at the Georgia Institute of Technology where he earned Bachelor’s and Master’s degrees in Electrical Engineering and Physics. He received his Ph.D. in physics from the University of Connecticut. He was an Ordnance Corps officer in the United States Army for 12 years, serving in several military research centers and at the Military Academy at West Point. He served as assistant head of the physics department at the University of Connecticut for 23 years. While at UCONN he published numerous articles in scientific journals, worked closely with graduate students, taught courses in Physics and environmental science, and was an enthusiastic researcher. Over the years he developed a sense of how physics could be taught at the high school level to ensure student success at the college level. He pursued Connecticut teaching certification in physics and chemistry and after retiring from UCONN he went on to teach physics for UCONN credit at E.O. Smith High School in Storrs. A dedicated teacher, he made the classroom a space for fun and creative learning, using exciting experiments to demonstrate the theories of physics while dressed as a wizard! After retirement from E.O. Smith, he spent time traveling and volunteering his time to combat climate change. He was a founding member of Eastern Connecticut Green Action.
Gary touched many lives and will be greatly missed. A Celebration of Life will be held at the Unitarian Society of Hartford at a later date. In lieu of flowers, a donation in Gary’s memory can be made to the Covenant Soup Kitchen in Willimantic Connecticut at covenantsoupkitchen.org, Eastern Connecticut Green Action at easternconnecticutgreenaction.com or Food and Water Watch at foodandwaterwatch.org.
Gary Bent’s scholarly publications are available at https://www.researchgate.net/scientific-contributions/Gary-Bent-84804712
Prof. Cara Battersby’s research group, the Milky Way Laboratory, was invited to collaborate with Genevieve de Leon, the 2022-23 Koopman Distinguished Chair in the Painting Department at the University of Hartford, for an exhibition focused on the intersection between the Maya calendrical cycles and scientific studies of the cosmos.
From the Milky Way Laboratory, H Perry Hatchfield, Jennifer Wallace, Dani Lipman, and Samantha Brunker contributed scientific figures that are displayed as part of the exhibition. These figures demonstrate the ongoing research focused on understanding the universe around us through the use of data and scientific analysis. These figures balance well with Genevieve de Leon’s original, large-scale paintings of constellations in the Maya Zodiac which were created in a methodical, focused way similar to how large-sky surveys are observed. Genevieve has studied Maya timekeeping extensively, and, through this exhibit, focuses on the intersection of various systems of knowledge.
Additionally, the exhibition includes multimedia work made by indigenous artists in the Native Youth Arts Collective and students at the Hartford Art School which focus on personal connections with the night sky.
The exhibit, “To Order the Days/Para Ordenar Los Días”, is located in the Donald and Linda Silpe Gallery at the University of Hartford, and will be available from February 23, 2023, to March 25, 2023.
The Conversation interviewed Prof. Jonathan Trump about his recent work with the James Webb Space Telescope (JWST), with an article and podcast interview available at this link. The interview includes discussion of Prof. Trump’s recent journal paper that used spectroscopic observations from JWST to understand the chemical enrichment of galaxies in the early Universe.
The 2023 High Energy Astrophysics Division’s Early-Career Prize is awarded to Dr. Chiara Mingarelli for her leadership in the analysis of pulsar timing array data and her contributions to our understanding of the stochastic gravitational wave background.
For more information about the Prize, see https://head.aas.org/awards/earlycareer/earlycareer.prize.html
Daniel McCarron, a physics professor, received a grant from the Air Force Office of Scientific Research for his work analyzing the quantum mechanical behavior of a simple hydrocarbon molecule: CH, or methylidyne. A highly reactive gas, methylidyne is abundant in the interstellar medium, and its simple composition promises to allow researchers to study the role of quantum mechanics within organic chemistry.
In order to expose the quantum nature of these molecules, Prof. McCarron has devised a way to cool them down to a millionth of a degree above absolute zero using laser light. At such a low temperature, “quantum effects are amplified and can reveal themselves in the lab,” he says. “You don’t really get that in a beaker at room temperature – things just happen too quickly and too chaotically.”
The AFOSR is funding the purchase of a high-powered laser to assist in slowing down beams of CH radicals from about 100 meters per second to several centimeters per second. This laser-cooling and trapping technology will allow amplifying and better study of the quantum behavior of this organic molecule, with an eye toward furthering scientific knowledge about the role of quantum mechanics in chemical reactions in general—a field where successful research has been scarce.
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