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
260 2016-01-11 16:00  E6-2, #1323  Mott Physics in the Strong Spin-Orbit Coupling Regime
259 2019-07-31 16:00  E6-2, #1323  Features of ballistic superconducting graphene file
258 2015-11-10 16:00  E6-2, #1323  Rapid heating of matter using high power lasers
257 2015-12-03 16:00  E6-2, #1323  Hybrid solid state spin qubits in wide bandgap semiconductors
256 2015-11-23 13:30  E6-2, #1323  What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
255 2019-06-24 11:00  E6-2, #1323  Topological photonic anomalies file
254 2015-12-09 14:00  E6-2, #1323  SWELLABLE COLLOIDAL PARTICLES ARE SWELL
253 2015-12-02 16:00  E6-2, #1323  Samarium Hexaboride: Is it a Topological insulator?
252 2015-12-01 16:00  E6-2, #1323  Introducing extra dimensions to spectroscopic studies of advanced quantum materials
251 2015-12-11 15:45  E6-2, #1323  Dynamical mean field theory studies on heavy fermion system
250 2016-01-26 14:00  E6-2, #1323  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
249 2019-07-25 16:00  E6-2, #1323  Band topology of twisted bilayer graphene file
248 2015-08-03 10:30  E6-2, #1323 (Seminar Room)  Axion Search
247 2024-05-30 10:00  E6-2, #2501  Quasiperiodic Effects in Quasicrystals
246 2024-05-28 11:00  E6-2, #2501  동적평균장 이론 소개
245 2024-05-28 10:00  E6-2, #2501  Mixed-State Quantum Spin Liquids and Dynamical Anyon Condensations in Kitaev Lindbladians
244 2023-05-31 16:00  E6-2, #2502  [High-Energy Theory Seminar] Resurgence and complex Chern-Simons theory
243 2023-09-13 16:00  E6-2, #2502  [High Energy Theory Seminar] Cosmic Birefringence from Dark Photon
242 2024-05-14 16:00  E6-2, #2502  [High Energy Theory Seminar] Minimal Production of Prompt Gravitational Waves during Reheating.
241 2024-03-27 16:00  E6-2, #2502  [High Energy Theory Seminar] The Callan Rubakov Effect