logo

korean english

게시판

Home > 게시판 > 세미나

입자이론물리 그룹에서 KIAS의 박미옥 박사님과 서강대학교 양현석 교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁 드립니다.

=========================================================================

Date/time: 2018. 12. 21(Fri.) 15:00

 

Place: Room number 31317

 

Speaker: Dr. Miok Park (KIAS)

 

Title: Quasilocal Smarr Relations

 

Abstract:  A quasilocal Smarr relation is obtained from Euler’s theorem for n-dimensional
asymptotically flat spacetimes and it is checked through several examples by calculating
quasilocal variables using the Brown-York quasilocal formalism, along with Mann-Marolf
counterterms. To find the entropy in the quasilocal frame, we define a quasilocal free energy from the Euclidean gravity action with a Tolman temperature. We discovered that the quasilocal free energy definition is not altered by a surface pressure term, and the entropy obtained through this method agrees with the usual Bekenstein-Hawking entropy. We also check that the quasilocal free energy combined with the quasilocal Euclidean action value is consistent with our quasilocal Smarr relation.

=========================================================================


Date/time: 2018. 12. 21(Fri.) 16:30

 

Place: Room number 31317

 

Speaker: Prof. Hyun Seok Yang (Sogang University)

 

Title: Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons

 

Abstract:  We consider an eight-dimensional Einstein-Yang-Mills theory to explore whether Yang-Mills instantons formed in extra dimensions can induce the dynamical instability of our four-dimensional spacetime. We show that the Yang-Mills instantons in extra dimensions can trigger the expansion of our universe in four-dimensional spacetime as well as the dynamical compactification of extra dimensions. We also discuss a possibility to realize a reheating mechanism via the quantum back-reaction from the contracting tiny internal space with a smeared instanton.


=========================================================================






번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1055423
582 <April.3(Wed.)> 전자구조계산을 이용한 새로운 양자물질 연구 2019.03.27 45447
581 <Mar.27(Wed.)> Ultrafast Movie Maker for Photo-induced Dynamics: Ultrafast Electron Microscope 2019.03.20 84021
580 <Mar.20(Wed.)> Connecting Thermoelectricity and Superconductivity by Pressure Bridge 2019.03.13 54000
579 <Mar.13(Wed.)> Physics in Medicine: Magnetic Resonance Imaging 2019.03.07 60538
578 <3/11(Mon) 10:30 am ~ >Probing Dark Matter at LIGO and Beyond 2019.03.04 68226
577 <2/8(Fri) 11:0 am ~ >Intertwined states in the pure and Nd-doped heavy fermion superconductor CeCoIn5 2019.02.08 84716
576 <2/8(Fri) 2:00pm ~ > 5d SCFTs and Type IIB 5-brane webs 2019.02.01 52379
575 <1/16(Wed) 4:00pm> Band Representation Analysis of Intersecting Nodal Rings in Semiconducting Layers 2019.01.09 59774
574 2019학년도 1학기 콜로퀴움 일정 2019.01.08 125025
» <12/21(Fri) 3:00pm ~ > Quasilocal Smarr Relations / Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons 2018.12.17 91893
572 <12/20(Thu) 2:00pm> Gravitating Spinning Stars (a particle theorist's perspective) 2018.12.17 174264
571 <Dec.12(Wed.)> First-principles studies of complex oxides interfaces 2018.12.05 63413
570 <Dec.5(Wed.)> 두 펄사 이야기 2018.11.28 154631
569 <11/21(Wed.) 2:00pm>Origin of Hawking Radiation 2018.11.20 52734
568 <11/23(Fri.) 11:00am>Barrier-bound States in Flat-band Systems 2018.11.19 52069
567 <Nov.21(Wed.) 4:30 PM> 핵물리학과 RAON 2018.11.15 45151
566 <11/13(Tue.) 11:00am>Hund’s coupling driven role of $d_{3z^2-r^2}$ in stabilizing the hole-doped antiferromagnetic state in cuprates 2018.11.09 99054
565 <Nov.14(Wed.) 4:30 PM> Status and Prospects for the IceCube Neutrino Observatory 2018.11.07 68490
564 <11/9(Fri.) 11:00am>Geometrically frustrated magnetism on triangular lattice 2018.11.05 96129
563 <11/12(Mon.) 3:30pm>Dark Matter Probes with Astrophysical Observations 2018.11.05 51664