|장소||Zoom and E6 #1323|
|일시||Jan 12th (Wed), 11:00 AM|
|연사||Joonseok Hur (MIT)|
Title: Spectroscopic study of trapped ions towards probing dark matter and new physics
Speaker: Joonseok Hur (MIT)
January 12th (Wednesday), 11:00, E6 #1323 &
Zoom link: https://kaist.zoom.us/j/86232436126
Historically, precise atomic spectroscopy has led to new physics in many instances. Precision low-energy experiments may thus supplement high-energy and astrophysical approaches. It has been proposed to measure the isotope shifts (ISs) in ions to probe new physics using King plots , a two-dimensional graph that maps the measured ISs . The Standard Model (SM) predicts in the leading order that the points in King plots should lie on a straight line. Departure from such linearity is unambiguously observed in our recent experiments with narrow optical transitions in trapped ions . However, the contribution of higher-order corrections to the non-linearity within the SM complicates the test. The sources of the observed violation should be examined carefully to decouple the SM corrections arising from nuclear physics from possible new-physics contributions.
Here I will present our latest experimental and theoretical efforts to observe the non-linearity, identify its physical origin, and obtain the bound on dark boson-mediated interaction as a particular type of new physics that is of increasing interest. Future works will be discussed subsequently.
 J. C. Berengut et al., Physical Review Letters 120, 091801 (2018); V. V. Flambaum, A. J. Geddes, and A. V. Viatkina, Physical Review A 97, 032510 (2018); C. Delaunay et al., Physical Review D 96, 093001 (2017).
 W. H. King, Isotope Shifts in Atomic Spectra (Plenum Press, New York, 1984).
 I. Counts*, J. Hur* et al., Physical Review Letters 125, 123002 (2020) for the early stage of the work.
Contact: Myeongsoo Kang (email@example.com)
|382||2014/05/28, PM5||KI Building, Matrix Hall||이웅범 대표이사(LG이노텍)||부품소재산업이 미래다|
|381||2014/12/22, 2PM||E6, Rm1319||Prof. Changbong Hyeon (KIAS)||Dynamics of molecular motors: Power stroke vs Brownian ratchet|
|380||2015/03/04, 12PM||1323호, E6-2||Prof. Choi Hak-Soo(Harvard)||Bioimaging and Biosensing Using Near-Infrared Fluorescence|
|379||2015/03/09-06/08||E6, 1501||최현용교수(연세대) 외12명||Physics Colloquium : 2015 Spring|
|378||2015/03/13, 2PM||Connect Room, KI Bldg.||The 15th Innovative Workshop on Soft/Bio Materials|
|377||2015/06/03, 12PM||Room 101, E11||Prof. Min-Kyo, Seo & Hansuek, Lee(KAIST)||The First Wednesday Multidisciplinary Forum|
|376||2015/07/15, 2PM||E6-2,1323||Dr. Se Young Park(Rutgers Univ.)||Electronic and optical properties of titanate-based oxide superlattices|
|375||2015/07/16, 4PM||E6-2, 1318||Dr. Kyunghan Hong(MIT)||Next-generation ultrafast laser technology for nonlinear optics and strong-field physics|
|374||2015/07/16-07/17||E6-2, 1501||Sang-Wook Cheong (Rutgers Univ.)||KAIST Physics Distinguished Lecture|
|373||2015/07/23,1:30PM||E4, B401||Prof. Gilles Lérondel (Univ. of Technology of Troyes)||Enhanced ZnO based UV photonics and related applications|
|372||2015/08/03,10:30AM||E6-2, #1323 (Seminar Room)||Dr. Jonghee Yoo (Fermi National Accelerator Laboratory, USA )||Axion Search|
|371||2015/08/04, 11PM||B501, Room Red, KI bldg. 5nd fl.||Dr. Eric Jin Ser Lee(Univ. of Manitoba, Canada)||Propagation of ultrasound through two- and three-dimensional strongly scattering media|
|370||2015/09/07, 3PM||E6-2. 1st fl. #1318||Dr. Jasbinder Sanghera (U.S. Naval Research Laboratory (NRL))||Advanced Optical Materials and Devices at NRL|
|369||2015/09/07-12/01||E6, 1501||문은국 교수(KAIST) 외||Physics Colloquium : 2015 Fall|
|368||2015/09/14, 2PM||E6-2. 2nd fl. #2501||Dr. Hae Ja Lee ( Stanford University, SLAC )||Ultrafast X-ray Studies on Dynamics Matter in Extreme Conditions|
|367||2015/09/15-12/08||E6, 1501||박제근 교수(서울대 물리학과) 외12명||Physics Colloquium : 2014 Fall|
|366||2015/10/14, 6PM||KAIST Munji Campus Supex Hall||이창환 교수 (부산대학교 물리학과)||인터스텔라 영화 속의 물리|
|365||2015/10/15, 10AM||E6-2, 5th fl. #5318||Dr. Mark D. Bird (Florida State University)||Development of Large-Bore, High Field Magnets at the NHMFL|
|364||2015/10/16, 3PM||E6-2, 5th fl. #5318||Dr. Pierre Pugnat , (CNRS-LNCMI)||High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble|
|363||2015/10/16, 4PM||E6-2. 2nd fl. #2501||Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University)||Fluctuations of entropy production in partially masked electric circuits|