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)
614 2009-02-23 16:00    Physics Colloquium : 2009 Spring file
613 2009-09-07 16:00    Physics Colloquium : 2009 Fall file
612 2009-10-21 16:00    Interdimensional Universality of Dynamic Interfaces
611 2010-02-08 16:00    Physics Ciolloquium : 2010 Spring file
610 2010-02-14 16:00    Physics Colloquium - 2011 Spring file
609 2010-09-06 16:00    Physics Colloquium : 2010 Fall file
608 2011-05-16 16:00    Photonics with surface plasmon polaritons
607 2011-09-03 16:00    Physics Colloquium : 2011 Fall file
606 2012-02-13 16:00    Physics Colloquium : 2012 Spring
605 2012-04-02 16:00    A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
604 2013-03-11 16:00    Physics Colloquium : 2013 Spring
603 2013-09-09 16:00    Physics Colloquium : 2013 Fall
602 2014-03-10 16:00    Physics Colloquium : 2014 Spring file
601 2014-05-28 17:00    부품소재산업이 미래다
600 2014-12-22 14:00    Dynamics of molecular motors: Power stroke vs Brownian ratchet file
599 2015-03-04 12:00    Bioimaging and Biosensing Using Near-Infrared Fluorescence file
598 2015-03-09 16:00    Physics Colloquium : 2015 Spring file
597 2015-03-13 14:00    The 15th Innovative Workshop on Soft/Bio Materials file
596 2015-06-03 12:00    The First Wednesday Multidisciplinary Forum file
595 2015-07-15 14:00    Electronic and optical properties of titanate-based oxide superlattices