Einstein gravity and beyond


  • Bum-Hoon Lee ⋅ KR Department of Physics, Sogang University, Republic of Korea


Gravity still remains the least known interaction at the fundamental level, though much impressive progress has been made during the past few decades. In this presentation, we will describe the essential aspects of the universe with gravity and cosmology. Then we move on to the possible candidate theories beyond the Einstein gravity theory. We will focus on the Gauss-Bonnet term, which is one of the simplest extensions with the higher curvature. The properties of this theory will be explained by looking at black holes, which show some characteristic differences compared with those of the Einstein gravity. One property is that it may be unstable under the fragmentation. Also, there exists the minimum mass below which the black hole cannot be formed. In other words, the Gauss-Bonnet term makes gravity less attractive. We also briefly mention the implication to cosmology.

About the Speaker

Bum-Hoon Lee, Department of Physics, Sogang University, Republic of Korea

Professor Bum-Hoon Lee received his B.S. from Seoul National University in 1976 and his Ph.D. from Columbia University in 1989. He was a Researcher at the University of North Carolina in 1989 and at the Theoretical Physics Institute of the University of Minnesota from 1989 to 1991. He became an Assistant and then an Associate Professor at the Department of Physics in Hanyang University from 1990 to 1996. He has been a Professor at the Department of Physics in Sogang University since 1996. At Sogang University, he was also the Director of the Center for Quantum SpaceTime from 2005 to 2020 and the Dean of the School of Natural Sciences from 2017 to 2019. He was previously the President of the Korean SCOAP3 Association (2017-2019), the Korea Council for High Energy Physics (KCHEP) (2013-2017), the Asia Pacific Center for Theoretical Physics (APCTP), and the Korean Physical Society (2019-2020). He was a member of the Review Board of the Division of Natural Sciences, NRF in Korea (2010-2014), the Heavy Ion Accelerator Committee (2019-2021), the Basic Research Project Driving Committee (2012-2017), the Consultation Committee on Basic Research Promotion (2015-2017), the Korea-CERN Cooperation and Moderation Committee (2006-2014), the Science and Technology Specialized Broadcasting Evaluation Committee (2016-2018), and the Chair of the Science Fellowship Review Committee CheongAm Foundation (2017-2021). Since 2011, he has been one of the Editors of the International Journal of Modern Physics A (IJMPA) and the Modern Physics Letters A (MPLA) journal.



Article ID



Invited Presentations



How to Cite

B-H Lee, Einstein gravity and beyond, Proceedings of the Samahang Pisika ng Pilipinas 39, SPP-2021-INV-3A-02 (2021). URL: https://proceedings.spp-online.org/article/view/SPP-2021-INV-3A-02.