visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-09-18 16:00 
일시 Sep 18(Mon), 16:00 
장소 CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus 
연사 Dr. Stefan EVANS (Helmholtz-Zentrum Dresden-Rossendorf) 

물리학과 야니스 교수 연구실/액시온 및 극한상호작용 연구단 (CAPP/IBS) 입니다.

아래 세미나에 관심 있으신 연구자들의 참석을 요청드립니다.

CAPP seminars will be held. Anyone interested in this topic is warmly welcome.

 

Speaker: Dr. Stefan EVANS (Helmholtz-Zentrum Dresden-Rossendorf)

 

Date: September 18, 2023 (Monday) 

 

Time: 4:00 PM (KST)

 

Venue: CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus

 

https://kaist.zoom.us/j/6108068959?pwd=TXV2OGlWdVRtcGhmNXVTRWlla2pHQT09

 

Meeting ID: 610 806 8959
Passcode: 131015
 
Topic: Searching for axions in quantum vacuum birefringence
 
Abstract:
 
After the discovery of the Higgs particle, axions or axion-like particles (ALPs) are among the most favorite candidates for new physics beyond the standard model. The axion arises by promoting the constant governing CP-violation in the QCD Lagrangian to a dynamical field, as a solution to the long-standing CP problem [1]. Possible existence of the axion would have observable implications for both astrophysical phenomena and strong EM field laboratory environments.
 
We explore the role of possible axions and ALPs in emerging ultra-intense laboratory probes of quantum vacuum structure. Axions interact with applied EM fields via their coupling  to the pseudoscalar EM field invariant E·B. As a consequence virtual axion excitations may drive vacuum birefringence and dichroism, producing effects comparable to the long sought-after Euler-Heisenberg-Schwinger QED vacuum response [2].
 
[1] R. D. Peccei and H. R. Quinn, Phys. Rev. Lett. 38, 1440-1443 (1977).
[2] J. Schwinger, Phys. Rev. 82, 664 (1951).

 

번호 날짜 장소 제목
497 2016-07-08 11:00  #1323(E6-2. 1st fl.)  Isostatic magnetism
496 2016-11-11 13:30  #1323(E6-2. 1st fl.)  Bandgap Engineering of Black Phosphorus
495 2016-07-07 14:00  #1323(E6-2. 1st fl.)  Let there be topological superconductors
494 2017-02-01 14:00  #1323(E6-2. 1st fl.)  Quantum electron optics using flying electrons
493 2016-11-16 16:00  #1323(E6-2. 1st fl.)  Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators
492 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
491 2018-05-31 16:00  #1323, E6-2  Dynamic control of optical properties with gated-graphene metamaterials file
490 2018-10-04 16:00  #1323, E6-2  Engineering light absorption in an ultrathin semiconductor metafilm file
489 2019-12-05 16:00  #1323, E6-2  Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
488 2019-10-15 16:00  #1323, E6-2  Moiré superlattices and graphene quasicrystal file
487 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
486 2019-11-05 16:00  #1323, E6-2  Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
485 2018-11-01 16:00  #1323, E6-2  Direct holography from a single snapshot file
484 2019-12-18 16:00  #1323, E6-2  Road to Higher Tc Superconductivity file
483 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
482 2018-11-21 15:00  #1323, E6-2  Engineering topological quantum physics at the atomic scale file
481 2018-10-11 16:00  #1323, E6-2  Dirac electrons in a graphene quasicrystal file
480 2019-10-25 15:00  #1323, E6-2  Physics Seminar file
479 2019-09-18 16:00  #1323, E6-2  Exploring Synthetic Quantum Matter in Superconducting Circuits file
478 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file