Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Eastern Great Lake Section and the Michigan Section of AAPT: Pushing Boundaries in Physics and Education
Volume 67, Number 16
Friday–Saturday, October 21–22, 2022; Lawrence Technological University, Southfield, Michigan
Session J03: Nuclear, Particle, and AMO Physics |
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Chair: Jay Mathews, Univ of Dayton Room: Lawrence Technological University S204 |
Saturday, October 22, 2022 8:15AM - 8:30AM |
J03.00001: Quasi-Elastic Electron Nucleus Scattering and the Correlated Fermi Gas Sam Carey, Gil Paz, Bhubanjyoti Bhattacharya The study of neutrino-nucleus scattering processes is important for the successful execution of the entire new generation neutrino experiments. Quasielastic neutrino - nucleus scattering, which yields a final state consisting of a nucleon and charged lepton, make up a large part of the total neutrino cross-section in neutrino experiments. A significant source of uncertainty in the cross-section comes from limitations in our knowledge of nuclear effects in the scattering process. To this end, electron-nucleus scattering experiments play an imporant role in providing vital information to test and validate different nuclear models intended to be used in neutrino experiments. We present a cross-section calculation for the electron nuclues quasielastic scattering process using the Correlated Fermi Gas nuclear model characterized by a depleted Fermi gas region and a correlated high-momentum tail. This is carried out by identifying various transitions available for the nucleon inside the nucleus and the corresponding phase-space integrals. We discuss the comparison between cross-sections from this model with the available experimental data and the widely used Relativistic Fermi Gas (RFG) nuclear model. |
Saturday, October 22, 2022 8:30AM - 8:45AM |
J03.00002: Two-Photon Entanglement in Multimode Jaynes-Cummings Models Fernando Romero, Nishan Amgain, Imran M Mirza Optical cavities with precisely one trapped mode field are technologically challenging to manufacture. To this end, in this work, we present the problem of multimode Jaynes-Cummings models [1]. In particular, we discuss the case of two-photon bipartite entanglement in multimode cavity quantum electrodynamics (QED). We find that the retardation effects in the generated entanglement are related to the size of the cavity. Compared to the single-photon case, we observe sudden death and birth of the entanglement in the two-photon problem. The recent developments in the field of quantum computing based on circuit QED have indicated the existence of new quantum effects when quantum emitters are simultaneously coupled with several optical modes [2]. We expect our results to be applicable in finding an approach to building cavity-based memories for quantum information storage. |
Saturday, October 22, 2022 8:45AM - 9:00AM |
J03.00003: Balance Functions of charged hadron pairs (π,K,p)×(π,K,p) in Au+Au collisions at √sNN = 200 GeV. Nandita Raha
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Saturday, October 22, 2022 9:00AM - 9:15AM |
J03.00004: Transport of trapped ultracold atoms using a counterdiabatic driving approach Edward Carlo C Samson, Chris J Larson, Jack Holt The emerging field of atomtronics involves atom analogues of electronic materials, circuits, and devices. Research on and development of atomtronic technologies typically require systems of ultracold atoms being transported in a matter wave waveguide. Furthermore, rapid transport of the atoms is necessary for short cycle times of the experiment or atomtronic process. As a result of repulsive atomic interactions, the electrically neutral atom cloud expands as it moves within the waveguide, which can lead to decoherence of the system. One way to solve this is to keep the atoms trapped in a confining potential, but rapid motion while inside a trap leads to unwanted excitations such as center-of-mass oscillations or ‘sloshing’. Here, we present an analysis of a fast transport scheme for trapped Bose-Einstein condensates that involves the use of an additional potential to counteract excitations coming from fast motion. By solving the time-dependent Gross-Pitaevskii equation numerically, we show that the transport protocol preserves the quantum fidelity of the trapped atoms up to a certain speed limit, and possible mechanisms of decoherence during transport are analyzed. |
Saturday, October 22, 2022 9:15AM - 9:30AM |
J03.00005: Implications of PREX-2+CREX Experiments on the Equation of State of Dense Matter Brendan T Reed, Charles J Horowitz, Farrukh J Fattoyev, Jorge Piekarewicz The recent CREX parity-violating electron scattering experiment has reported a small value for the form factor skin Fc-Fw in 48Ca. This result is rather unexpected as the implied value for the neutron skin Rn-Rp is also small. In contrast, the PREX-2 experiment reported a moderately large neutron skin in 208Pb. The combined result of both experiments shows that there are currently no models in literature which reproduce simultaneously both experimental results at the 68% level. This has important implications for our understanding of the isovector sector of the equation of state and on the calibration and optimization of model energy density functionals. The connection to neutron stars will also be discussed. |
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