| 장소 | Zoom |
|---|---|
| 일시 | Dec.10(Thu), 01:55 PM |
| 연사 | Yin Wen (University of Tokyo) |
Title : Consistency of Boltzmann equation and light dark matter from inflaton decay
Speaker: Dr Yin Wen (University of Tokyo)
Abstract:
Boltzmann equation plays important roles in particle cosmology in studying the evolution of distribution functions (also called as
occupation numbers) of various particles. For the case of the decay of a scalar condensation into a pair of scalar particles, we
point out that the system may not be well described by the Boltzmann equation when the occupation number of daughter particles becomes large even in the so-called narrow resonance regime.
In the second part, I will show a new simple mechanism for the light dark matter (DM) production from the decay of the oscillating
inflaton condensation. If the reheating temperature after inflation is higher than the inflaton mass, which is of the same order of the momentum of the DM at the time of the production, the DM momentum can be suppressed compared to the temperature of the thermal plasma if the interaction of the DM is weak enough. In addition, the DM can be abundant enough.
Zoom Link:
Time: Dec 10, 2020 01:55 PM Seoul
Meeting ID: 875 7667 2928
Passcode: 028371
댓글 0
| 번호 | 일시 | 장소 | 연사 | 제목 |
|---|---|---|---|---|
| 192 | Jul. 28 (Thu.) 4PM | #1323(E6-2. 1st fl.) | Prof. Johannes Pollanen, Jerry Cowen Chair of Experimental Physics at Michigan State University | Low Dimensional Electrons: On the Road to Hybrid Quantum Systems |
| 191 | July 10 (Wed.), 04:00 PM- | Academic Cltural Complex (E9) 5층 스카이라운지 | Prof. Sidney Nagel/Young-Kee Kim |
Public Lectures
 |
| 190 | July 13, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Prof. Ian Lewis (The University of Kansas, Department of Physics & Astronomy) | Loop Induced Single Top Partner Production and Decay at the LHC |
| 189 | July 2, 2020 (Thursday) | Zoom Video Conference Seminar | Dr. Emmanuel Flurin (CEA Saclay) |
An irreversible qubit-photon coupling for the detection of itinerant microwave photons
|
| 188 | July 2. 2018 (Monday) 3:00 PM | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus | Dr. Peter Winter (Argonne National Laboratory) |
High Precision Magnetic Field Measurement for the Muon g-2 Experiment
|
| 187 | July 21 - August 2 | E6-2,# 5318 | Junmou Chen/Thomas Flacke/Kaoru Hagiwara/Junichi Kanzaki/Chris Kelso/Jeong Han Kim/Kyoungchul Kong/Gabriel Lee/Hye-Sung Lee/Ian Lewis |
Challenges and Opportunities in Theoretical Particle Physics 2019
|
| 186 | July 25(Thur.),4:00PM | E6-2, #1323 | Prof.Bohm-Jung Yang |
Band topology of twisted bilayer graphene
|
| 185 | July 26, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Manki Kim (Department of Physics, Cornell University) |
Inflation in String Theory and Backreaction
|
| 184 | July 27, 2018 at 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Dr. Hyejung Kim(Technische University Dresden) |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
|
| 183 | July 30 (Tue), 4:00 PM | #1323, E6-2 | Dr. Mingu Kang |
Dirac fermions and flat bands in correlated kagome metals
|
| 182 | July 31(Wed.)/ 16:00 | E6-2, #1323 | Dr. Ivan Borzenets |
Features of ballistic superconducting graphene
|
| 181 | July 8(Mon), 14:00 | E6, #1322 | T. L. M. Guedes (Univ. of Konstanz) |
Ultrabroadband squeezed pulses and their relation to relativity
|
| 180 | July 9 (Mon.), 14:00 PM | #1323, E6-2 | Prof. Cesar A. Hidalgo, MediaLab, MIT |
The principles of collective learning
|
| 179 | July. 14 (Fri.), 3:00 PM | #1323 (E6-2. 1st fl.) | Dr. Jun Hyun Lee / University of Maryland |
Chiral anomaly in disordered Weyl semimetals
|
| 178 | Jun 1 (Wed) 4 PM | #1323(E6-2 1st fl.) | Kil-Byoung Chai, Caltech | Laboratory experiments relevant to mesospheric clouds, Saturn’s rings & astrophysical jets |
| 177 | Jun 22(Tue) 17:00 | Zoom webinar | Wei Han (Peking University, China) |
Spintronics meets Quantum Materials
|
| 176 | Jun 24 (Mon) 11:00 | E6-2, #1323 | Dr. Henning Schomerus |
Topological photonic anomalies
|
| 175 | Jun 28, 14:00 | E6-2, #1322 | Dr. Bongjae Kim, Dr. Sooran Kim, Dr. Jeongwoon Hwang |
1st Research-exchange meeting of computational material physics
|
| 174 | Jun 8 (Tue), 10:00 AM | Zoom webinar | Toshihiko Baba (Yokohama National University, Japan) |
Photonic crystal devices for sensing
|
| 173 | Jun. 01 (Fri.), 11:00 AM | E6-2. 1st fl. #1323 | Dr. Seung Sae Hong |
Topological phases in low-dimensional quantum materials
|