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
233 2022-01-18 14:00  KI bldg. 5th fl. Room B501 & Zoom  Data-driven interrogation of biological dynamics: from subcellular interactions to neuronal networks in vivo file
232 2022-01-25 15:00  E6 #1501/online  Emulating twisted double bilayer graphene with a multiorbital optical lattice file
231 2022-01-26 13:00  E6 #1501  An Introduction to Cohomology groups file
230 2022-02-28 16:00  E6, #1501  Spin-based training of optical microscopes
229 2022-03-07 16:00  E6, #1501  Climate Physics and Modelling(우리말강의)
228 2022-03-14 16:00  E6, #1501  Quantitative phase imaging and artificial intelligence: label-free 3D imaging, classification, and inference
227 2022-03-18 11:00  Online seminar  (응집물리 세미나) Illuminating exotic states of matter: Raman spectroscopy as an experimental tool to characterize quantum spin liquids file
226 2022-03-21 16:00  E6, #1501  Multi-wavelength Studies on Relativistic Jets from Gamma-ray Bright Active Galactic Nuclei
225 2022-03-25 11:00  E6-1 #1323  (응집물리 세미나) Hund's metallicity in ruthenate systems file
224 2022-03-28 16:00  E6, #1501  Ultimate-density atomic semiconductor via flat bands
223 2022-03-29 10:00  E6 #1501/zoom, E6 #2502/zoom  Non-reciprocal phase transitions file
222 2022-03-31 10:00  E6 #1501/zoom  Weiss fields for Quantum Spin Dynamics file
221 2022-03-31 16:00  online  (광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials
220 2022-04-01 16:00  Zoom webinar  High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
219 2022-04-04- 16:00  E6, #1501  New paradigms in Quantum Field Theory
218 2022-04-08 11:00  E6-1 #1323  (응집물리 세미나) Flat-surface-assisted physical phenomena occurring in single crystal metal thin film file
217 2022-04-11 16:00  E6, #1501  Emergence of Statistical Mechanics in Quantum Systems
216 2022-04-13 10:30  E6 #1323/zoom  Harnessing topology and correlations from singularities in 3d-kagome metals
215 2022-04-14 16:00  E6 1323  (광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency
214 2022-04-15 11:00  Online seminar  (응집물리 세미나) First-principles studies of polar oxides and their applications file