visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-03-22 16:00 
일시 Mar 22 (Wed), 4PM 
장소 E6-2, #2502 
연사 Kunio Kaneta (Tokyo Woman's Christian University) 
We invite you to the High-Energy Theory Seminar this Wednesday (March 22) at 4PM. 
 
Speaker: Kunio Kaneta (Tokyo Woman's Christian University)
Time: Mar 22 (Wed), 4PM
Place: E6-2, #2502
 
Title: Boltzmann or Bogoliubov? A Case of Gravitational Particle Production
Abstract: Despite being the weakest force in nature, gravity is a fundamental source of particle production in the early universe. All particles, including dark matter, are necessarily produced after the end of inflation. Two approaches have been commonly considered to study this production process: one based on the Boltzmann equation and the other based on the Bogoliubov transformation. The former is widely used in phenomenological studies of dark matter, while the latter was developed to describe particle production in curved spacetime. By considering the pure gravitational production of a scalar particle, we would like to discuss when these two approaches are equivalent and when they are not.
번호 날짜 장소 제목
280 2022-11-03 16:00  E6-2 #1323  (광학분야 세미나) Single-photon emission from low-dimensional materials
279 2023-06-01 16:00  E6-2 #1323  (광학분야 세미나)Quantum sensing using a squeezed light from hot Rb vapor
278 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates file
277 2022-12-09 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) Single-shot measurements of strongly-correlated artificial molecular levels in semiconductor quantum dots file
276 2023-03-16 16:00  E6-2 #1323  2023 봄학기 광학분야 및 응집물리 특별세미나 전체 일정 file
275 2022-11-25 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations file
274 2017-10-10 16:00  E6-2 #1323  Discovery of New 2D Materials with Diverse Physical Properties
273 2020-10-23 14:00  E6-2 #1323  Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
272 2022-11-24 16:00  E6-2 #1323 & Zoom  Probing fundamental physics by mapping the mm and sub-mm sky
271 2016-09-29 16:00  E6-2 #1323 (1st floor)  Large-scale Silicon Photonic MEMS Switches
270 2023-07-14 11:00  E6-2 #1501  Interfaces engineering of thin film oxides
269 2024-03-20 16:00  E6-2 #2502  [High-Energy Theory Seminar] Black hole states at finite N new
268 2024-03-13 16:00  E6-2 #2502  [High-Energy Theory Seminar] The Schwarzschild Black Hole from Perturbation Theory to all Orders
267 2022-10-26 10:00  E6-2 #2502  Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
266 2022-08-08 14:00  E6-2 #2502  Classical Shadow Tomography for Analog Quantum Simulators
265 2020-11-12 16:00  E6-2 1323  2020 가을학기 광학분야 특별세미나
264 2022-01-17 14:00  E6-2 Room 2502  Five Lectures on Observational Probes of Dark Energy file
263 2016-09-02 16:00  E6-2(1st fl) #1323  Quantum Electrical Transport in Topological Insulator Nanowires
262 2016-09-02 14:30  E6-2(1st fl.), #1323  Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
261 2023-11-23 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Deciphering the Enigma of Quantum Materials by X-ray Scattering and Spectroscopy