visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-09-26 16:00 
일시 Sep 26(Tue), 4PM 
장소 E6-2, #2502 
연사 Dr. Taewook Youn (Cornell-Korea U Joint Postdoc) 
We are delighted to announce the upcoming High-Energy Theory Seminar by Dr. Taewook Youn (Cornell-Korea U Joint Postdoc).
The seminar will take place today at 4PM at E6-2, #2502 and you are all invited to participate. 
 
Speaker: Dr. Taewook Youn (Cornell-Korea U Joint Postdoc)
Time: Today, 4PM
Place: E6-2, #2502
 

Title: A new step in interacting dark sector cosmologies

 

Abstract: With the growing precision of cosmological measurements, tensions in the determination of cosmological parameters have arisen that might be the first manifestations of physics going beyond Lambda CDM. We propose a new class of interacting dark sector models, which lead to qualitatively new cosmological behavior, which can potentially simultaneously address the two most important tensions in cosmological data, the H0 and S8 tensions. The main ingredient in this class of models is multi-component interacting dark radiation, with at least one of the components having a light mass and transitioning to non-relativistic close to the time of matter-radiation equality, and interactions between this massive dark radiation component and a fraction of dark matter. This generalizes the scenario known as Partially Acoustic Dark Matter, in which a fraction of dark matter has strong interactions with dark radiation throughout most of the universe evolution. By introducing a mass-threshold for dark radiation, in which the component that interacts with dark matter becomes non-relativistic and quickly annihilates into the massless component, we achieve two goals, each of them helping improve one of the aforementioned tensions and leaving the power spectrum identical to Lambda CDM at larger scales.

번호 날짜 장소 제목
» 2023-09-26 16:00  E6-2, #2502  [High Energy Theory Seminar]A new step in interacting dark sector cosmologies
505 2023-09-21 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP seminar] Axion Magnetic Resonance file
504 2023-09-18 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP Seminar] Searching for axions in quantum vacuum birefringence file
503 2023-09-14 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP seminar] Dark matter searches in Water Cherenkov Detectors file
502 2018-10-04 16:00  #1323, E6-2  Engineering light absorption in an ultrathin semiconductor metafilm file
501 2019-10-31 10:00  #1323 (E6-2, 1st fl.)  Kondo meets Hubbard: Impurity physics for correlated lattices file
500 2019-10-29 16:00  #1323 (E6-2, 1st fl.)  Particles and Gravity via String Geometry file
499 2019-10-29 14:30  #1323, E6-2  Quantum sensing file
498 2019-10-29 10:00  #1323 (E6-2, 1st fl.)  Unconventional Spin Transport in Quantum Materials file
497 2018-10-26 16:00  #1323, E6-2  Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
496 2018-10-25 16:00  #1323, E6-2  Abelian and non-Abelian dark photons file
495 2018-10-24 10:30  E6-1, Lecture Room 1501(1F)  Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
494 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
493 2018-10-18 16:00  #1323, E6-2  Applications of nonlinear optics for condensed matter researches file
492 2018-10-18 10:00  #1323, E6-2  Understanding membrane protein folding using single-molecule force techniques file
491 2019-10-17 16:00  #1323, E6-2  Top down manipulation of Waves : From Metamaterials, Correlated Disorder, Quantum Analogy, to Digital Processing file
490 2019-10-16 16:00  #1323 (E6-2, 1st fl.)  Emergent black holes and monopoles from quantum fields file
489 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
488 2020-10-15 17:00  https://bit.ly/3ndIiJn  Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
487 2020-10-15 16:00  CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus  Graphene-based Josephson junction microwave bolometer file