visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-09-13 16:00 
연사  
장소 E6-2, #2502 
We are delighted to announce the upcoming High-Energy Theory Seminar by Dr. Sung Mook Lee who joined KAIST recently as a postdoctoral fellow.
The seminar will take place today Wednesday (Sep 13) at 4PM at E6-2, #2502 and you are all invited to participate. 
 
Speaker: Sung Mook Lee (KAIST)
Time: Today, September 13 (Wednesday), 4PM
Place: E6-2, #2502
 
Title: Cosmic Birefringence from Dark Photon
 
Abstract:
Recent findings of isotropic cosmic birefringence within CMB have sparked interest in exploring potential indications of parity violation in our universe. The prevailing interpretation is the existence of an axion background, a concept I will briefly review. On the other hand, my focus in this presentation will be the intriguing possibility of kinetic mixing between the CMB photons and birefringent dark photons as the underlying cause of cosmic birefringence. During this discussion, I will demonstrate that indeed the birefringence of the dark photons can influence the polarization of CMB photons even though this effect may not be uniformly distributed. Furthermore, our result sheds light on the pivotal role played by kinetic mixing in generating two fundamental attributes of the CMB: circular polarization and spectral distortion. This presentation is based on 2307.14798.
번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
206 2019-05-09 16:00    Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
205 2022-05-20 11:00    (응집물리 세미나) Exploration of new polymorphs in van der Waals crystals
204 2019-11-28 16:00    Generation of coherent EUV emissions using ultrashort laser pulses file
203 2024-05-28 10:00    Mixed-State Quantum Spin Liquids and Dynamical Anyon Condensations in Kitaev Lindbladians
202 2023-08-24 11:00    Advancing magnonic metamaterials: spin waves in nanomagnetic arrays
201 2016-04-19 14:00    Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability
200 2021-04-09 10:00    Integrated Lithium Niobate Photonics file
199 2018-09-07 15:00    Recent developments in density functional theory: From new functionals to the nature of the chemical bond file
198 2023-07-20 16:00    [CAPP Seminar] Cosmoparticle Physics of Dark Universe file
197 2016-11-10 16:00    Low Dimensional Active Plasmonics and Electron Optics in Graphene
196 2015-06-03 12:00    The First Wednesday Multidisciplinary Forum file
195 2019-06-04 17:00    Stochastic nature of bacterial eradication using antibiotics file
194 2023-09-27 16:00    Chiral Magnets: Domain-Wall Skyrmions and String Theory Realization
193 2025-03-07 11:00  Prof. Myunglae Jo  A tunable Mach-Zehnder interferometer in quantum hall graphene file
192 2018-12-27 16:00    Quantum Innovation (QuIN) Laboratory file
191 2019-10-17 16:00    Top down manipulation of Waves : From Metamaterials, Correlated Disorder, Quantum Analogy, to Digital Processing file
190 2019-08-14 16:00    Quantum Optics, at the heart of quantum metrology and quantum information file
189 2024-07-25 16:00    Generation and Certification of Optical Quantum States for Information Processing file
188 2023-07-14 11:00    Interfaces engineering of thin film oxides
187 2025-02-03 14:00  Prof. Nobuyuki Yoshioka  Towards early fault-tolerant quantum computing file