10/2Graduate Student Seminar
Graduate Student SeminarFriday, October 2nd, 202012:15 PM - 01:15 PMStorrs Campusonline
Oxygen Formation in Stellar Helium Burning
The Laboratory for Nuclear Science (LNS) at Avery Point (http://astro.uconn.edu), aka the Laboratory for Astrophysics, is engaged in research of several problems central to stellar Evolution theory. Today we shall discuss oxygen formation is stellar helium burning, that determines the C/O ratio in stars. This is an essential laboratory input to stellar evolution theory that for example determines the final fate of a Type II supernova (black hole or neutron star), as well as the light curve of a Type Ia supernova (that is used to measure distances to the end of the observable universe from which the accelerated expansion of the universe was recently discovered).
This presentation will involve our faculty at Avery Point (Gai) and in the UK (Smith) and the two graduate students (Stern and Schweitzer) who are working on experiments at Duke University in the USA, in Warsaw, Poland, and in a new facility constructed in Romania.
10/5Particle, Astrophysics, And Nuclear Physics Seminar
Particle, Astrophysics, And Nuclear Physics SeminarMonday, October 5th, 202002:00 PM - 03:00 PMStorrs Campusonline
Phase diagram of QCD and Lifshitz regime: how transverse thermal fluctuations might turn nuclear matter into quantum-spin liquid
We discuss dense cool QCD where a region with spatially inhomogeneous condensate might emerge. In that case, QCD phase diagram may exhibit a Lifshitz regime, which can appear either instead of, or in addition to Critical End Point. We study the Lifshitz regime using a combination of large-N expansion and numerical lattice simulations of an effective O(N) sigma model. We find evidence that quantum fluctuations disorder inhomogeneous condensate ("chiral spirals") and give rise to unusual quantum spin-liquid phase. We also discuss how this novel phase can be detected experimentally.
Zoom Meeting Link:
Meeting ID: 819 264 8596
Note: The seminar will start at 2:00PM, but participants are welcomed to join the meeting at 1:30PM for discussion.Contact Information: Prof. L. Jin More
10/9Graduate Student Seminar
Graduate Student SeminarFriday, October 9th, 202012:15 PM - 01:15 PMStorrs Campusonline
Institute for Theoretical Atomic, Molecular and Optical Physics, Harvard-Smithsonian Center for Astrophysics
Quantum electron scattering
The second quantum revolution is upon us and atomic molecular and optical (AMO) physics is the discipline leading this revolution. Major advances in cooling and trapping of atoms and molecules in the last three decades now allow practitioners to create exotic many-body systems whose properties and behavior are predicated on fluctuations inherent in quantum systems. The ultracold AMO systems can be precisely and exquisitely interrogated and manipulated to engineer few-body interactions that “nature” may not naturally provide. I’ll draw on some fundamental physics concepts to elucidate a few of these quantum many-body features.
10/9Physics Colloquium: From Black Holes To Robots
Physics Colloquium: From Black Holes To RobotsFriday, October 9th, 202003:30 PM - 04:30 PMStorrs CampusBPB-131
From Black Holes, to Data Science, to Robots: Tips & tricks for going into industry
The majority of physics/astronomy PhD recipients now leave the field for industry either immediately after graduation or after one or more postdoctoral stints. This has been driven by several factors, including the overproduction of PhDs relative to a declining pool of available tenure-track positions, greater freedom to choose where to live, and often significantly higher salaries. However, STEM graduates are increasingly finding that data science, the de facto refuge for former academics, is itself becoming somewhat saturated, with data on recent job listings suggesting that the majority of DS positions are now filled by bachelor's degree recipients rather than PhDs. In this talk, I will describe how I navigated this increasingly complicated landscape to find my current job, and share some pieces of advice I feel are generically useful to those who might be looking for jobs outside of academia in the next few years.
Dr. James Guillochon received a PhD in astrophysics from the University of California Santa Cruz and then went on to hold prestigious postdoctoral fellowships, the Hubble and ITC fellowships, at the Harvard-Smithsonian Center for Astrophysics. He developed a reputation as a world-renowned researcher in a range of topics, including black hole mergers, tidal disruption events, white dwarf accretion, and more. He is also well-known for his open-source contributions to the scientific community, including vox charta, open access astronomy catalogs, software, as well as maintaining a current list of US and Canadian astrophysics graduate program policies regarding the use of the physics GRE in graduate admissions decisions here.
In 2018 Dr. Guillochon transitioned to working in the industry as a Robotics Engineer in the Boston area. He is an outspoken advocate for positive transitions from academia to industry and will be joining us for a virtual colloquium on Friday to discuss his transition.Contact Information: Prof. Cara Battersby More
10/12Particle, Astrophysics, And Nuclear Physics Seminar
Particle, Astrophysics, And Nuclear Physics SeminarMonday, October 12th, 202002:00 PM - 03:00 PMStorrs Campusonline
Advances in the Exploration of the Nucleon Resonance Spectrum and Structure in Experimentswith CLAS and CLAS12
Studies of nucleon resonances (N*) in experiments with electromagnetic probes offer unique information on many facets of the strong interaction in the regime of large (on the order of unity) QCD running couplings seen in the generation of the spectrum of N* states with different quantum numbers and structural features. The current status of the N* spectrum and structure studies for exclusive meson photo- and electro-production data with CLAS at Jefferson Lab will be presented in the talk. The extension of these efforts in the Jefferson Lab 12 GeV-era experiments with CLAS12 will be outlined.
WebEx Meeting: https://uconn-cmr.webex.com/uconn-cmr/j.php?MTID=mb3e4c57467ee718677987ca3a427a21dContact Information: Prof. K. Joo More
10/16Graduate Student Seminar
Graduate Student SeminarFriday, October 16th, 202012:15 PM - 01:15 PMStorrs Campusonline
Department of Physics,
University of Connecticut
An Introduction to Physics Education Research
Physics education research (PER) is a subfield of physics that focuses on investigating questions such as: 1) how can we teach physics better?; 2) how do students learn physics?; and 3) how can we make the physics community more inclusive, equitable, and diverse? In this talk, we will give an introduction to PER, including common misconceptions, methods, and the PER happening at UConn.
10/23Graduate Student Seminar
Graduate Student SeminarFriday, October 23rd, 202012:15 PM - 01:15 PMStorrs Campusonline
Department of Physics,
University of Connecticut
Soft Matter Physics: HPC Simulations and Theory
Soft matter includes a broad range of structurally different materials ranging from small molecules such as lipids and liquids crystals to macromolecules, biopolymers and colloids. These materials can self-assemble into different organized structures and possess properties which vary depending on external conditions. To be able to understand the principles of self-assembly, predict and direct the outcomes of it is highly desirable to gain fundamental insight into biological self-assembly and to be able to create new materials with desired properties for energy, photonic, nanoelectronics, nanomedicine, sensors and other advanced functional nanomaterials. Theory and molecular modeling play an increasingly important role in gaining fundamental insights into complex behavior of these systems, as it allows to achieve atomistic level details inaccessible experimentally or guide experimental material development by predicting self-assembly pathways depending on structural properties of the building elements and external conditions. Several examples of ongoing, recently funded and planned interdisciplinary research projects collaboration with experimental groups will be discussed in connection with corresponding computer modeling approaches and material applications.
10/30Graduate Student Seminar
Graduate Student SeminarFriday, October 30th, 202012:15 PM - 01:15 PMStorrs Campusonline
Kinematics of extragalactic jets
Extragalactic jets emitted from active galactic nuclei are a well-established phenomenon. These jets are known to propagate with bulk relativistic motion over kiloparsec-scale distances, generating emission across multiple energy bands, including the X-ray. In my talk, I will discuss recent X-ray observations investigated for proper motions and brightness changes in nearby jets. Using multi-epoch observations spanning several years, proper motions from X-ray emission are detected for the first time in extragalactic systems, with superluminal motions measured up to speeds of 6.3c. Brightness variations up to 73% are found for the X-ray knots in the jets, and spectroscopic modeling is used to determine cooling emission mechanisms from the sources. These results provide invaluable constraints on the kinematic evolution of these exotic extragalactic systems.
10/30The 2020 Nobel Prize In Physics (Physics Department Colloquium)
The 2020 Nobel Prize In Physics (Physics Department Colloquium)Friday, October 30th, 202003:30 PM - 04:30 PMStorrs Campusonline
Black Holes: The 2020 Nobel Prize in Physics
The Nobel Foundation has awarded the 2020 Nobel Prize in Physics to Roger Penrose “for the discovery that black hole formation is a robust prediction of the general theory of relativity”, and to Reinhard Genzel and Andrea Ghez “for the discovery of a supermassive compact object at the centre of our galaxy”.
We review the physics and the significance of these remarkable discoveries. There will be some technical detail but the talk is intended for a general audience.
Webex link: https://uconn-cmr.webex.com/meet/jot16106Contact Information: Prof. Gerald Dunne More