visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-01-12 11:00 
일시 Jan 12th (Wed), 11:00 AM 
장소 Zoom and E6 #1323 
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 [1], a two-dimensional graph that maps the measured ISs [2]. 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 [3]. 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.

 

[1] 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).

[2] W. H. King, Isotope Shifts in Atomic Spectra (Plenum Press, New York, 1984).

[3] I. Counts*, J. Hur* et al., Physical Review Letters 125, 123002 (2020) for the early stage of the work.

 

 

 

Contact: Myeongsoo Kang (mskang@kaist.ac.kr)

번호 날짜 장소 제목
366 2023-05-12 11:00  E6-2 #1323  (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
365 2022-05-11 16:00  E6-2. #1323 & Zoom  Gravity as a phenomenon in quantum dynamics
364 2018-05-11 16:00  E6-2. 1st fl. #1323  암페어 단위 재정의와 단전자 펌프 소자 개발 file
363 2018-05-11 14:30  E6-2. 1st fl. #1323  Disordered Floquet topological insulators file
362 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
361 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
360 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
359 2019-05-08 16:00  E6 Room(#1323)  Imaging valley dependent electron transport in 2D semiconductors file
358 2023-05-31 16:00  E6-2, #2502  [High-Energy Theory Seminar] Resurgence and complex Chern-Simons theory
357 2018-05-31 16:00  #1323, E6-2  Dynamic control of optical properties with gated-graphene metamaterials file
356 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
355 2019-05-31 11:00  #1323, E6-2  Cavity QED with Spin Qubits file
354 2019-05-30 16:00  #1323, E6-2  Tuning the excitonic properties of semiconductors with light-matter interactions file
353 2023-05-03 16:00  E6-2, #2502  Probing microscopic origins of axions by the chiral magnetic effect
352 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file
351 2022-05-27 11:00  Online seminar  Current Status and Future Plans of ADMX file
350 2016-05-24 16:00  E6-2. #1323(1st fl.)  Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
349 2019-05-24 16:00  #1323, E6-2  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
348 2023-05-22 13:00  E6-6 119  Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
347 2019-05-21 16:00  #5318, E6-2  Classification of flat bands according to the band-crossing singularity of Bloch wave functions file