korean english


Home > 게시판 > 세미나

입자이론연구실에서 서강대학교의 김원태 교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁드립니다.

○ 일시: 2018년 11월 21일(수) 오후 2:00 ~

○ 장소: Multimedia room, 2nd floor at Samsung Library 

○ 연사: Prof. Wontae Kim (Sogang University)

Title: Origin of Hawking Radiation

○ Abstract: 

The Unruh vacuum not admitting any outgoing flux at the horizon implies that the origin of the outgoing Hawking radiation is the atmosphere of a near-horizon quantum region without resort to the firewall; however, the existence of the firewall of superplanckian excitations at the horizon can be supported by the infinite Tolman temperature at the horizon. In an exactly soluble model, we explicitly show that the firewall necessarily emerges out of the Unruh vacuum so that the Tolman temperature in the Unruh vacuum is divergent in essence due to the infinitely blueshifted negative ingoing flux crossing the horizon rather than the outgoing flux. We also show that the outgoing Hawking radiation in the Unruh vacuum indeed originates from the atmosphere, not just at the horizon, which is of no relevance to the infinite blueshift. Consequently, the firewall from the infinite Tolman temperature and the Hawking radiation from the atmosphere turn out to be compatible, once we waive the claim that the  Hawking radiation in the Unruh vacuum originates from the infinitely blueshifted outgoing excitations at the horizon.  

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1057195
602 <5/1>In vivo optical imaging of hemodynamic changes 2009.05.06 120192
601 <4/21> Experimental and Observational Astrophysics in the Infrared Wavebands 2009.04.17 119941
600 <4/4> Novel multi-bit magnetic tagging technique for high-throughput chemical analysis 2008.03.31 119412
599 <10/28>Grazing Incidence X-ray Diffraction and Surface X-ray Scattering Study of Hematite (α-Fe2O3) Nano-cube 2011.10.26 119189
598 <10/17> Graphitic Carbon Nanostructures 2008.10.27 118513
597 <3/19> Bioconjugates of nanomaterials for biochip & biosensor applications 2010.03.16 117921
596 <4/30> Updates on warped brane inflation 2009.04.21 117422
595 <11/5> Modified nucleic acid systems for biomedical applications 2010.11.01 117266
594 <April.17(Wed.)> Emerging Artificial Synapse for Learning- and Energy-Efficient Neuromorphic System 2019.04.11 116616
593 <11/22>A Glimpse of X-ray Sky 2006.11.16 116204
592 <3/31> ZnO nanorod heterostructures and nanodevices 2006.03.27 115775
591 <3/12(화)>물리학과 특별초청강연 개최 안내 2013.03.04 115255
590 <5/15>Black Hole Entropy Function in (Anti-)de Sitter Space-Time 2008.05.09 114490
589 <1/28> Steps towards a non-relativistic AdS/CFT 2010.01.25 113984
588 <5/16(Thu.) 14:00 ~ >The Chiral anomaly without Landau levels 2019.05.08 113368
587 <8/5>Brane superpotential via local Calabi-Yau spaces 2009.08.03 113347
586 <12/30> Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena 2013.12.16 112635
585 <4/14> X-ray absorption fine structure analyses on amorphous oxide films 2009.04.06 112506
584 <5/14> Search for exotic materials: strongly correlated electron system 2010.05.10 112136
583 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 112092