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Geonhwi Hwang's webpage

Curriculum Vitae

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Geonhwi Hwang

Ph.D. Student

Laboratory of Solid State Physics

Division of Applied Physics

Graduate School of Engineering, Hokkaido University

theprex2_at_eis.hokudai.ac.jp (replace _at_ with @)

Korean webpage / 국문으로 보기

Japanese webpage / 日本語ホームページ

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ORCID
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Education

APR. 2024 - present
PhD in Applied Physics
Graduate School of Engineering, Hokkaido University
APR. 2022 - MAR. 2024
MEng in Applied Physics
Graduate School of Engineering, Hokkaido University
APR. 2018 - MAR. 2022
BEng in Applied Physics
School of Engineering, Hokkaido University
OCT. 2017 - MAR. 2018
Preliminary Education in Japanese Language, Sciences, and Cultural Studies
Institute for the Advancement of Higher Education, Hokkaido University
DEC. 2016 - SEP. 2017
Preliminary Education in Japanese Language, Sciences, and Cultural Studies
Institute of International Education, Kyung Hee University

Publication

September 2023
Bulk-Edge Correspondence for Point-Gap Topological Phases in Junction Systems
Geonhwi Hwang and Hideaki Obuse, Phys. Rev. B 108, L121302 (2023).

Seminar

21 October, 2024
Physics Seminar in Department of Physics, KAIST LINK
Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
Non-Hermitian point-gap topology in junction systems LINK
Geonhwi Hwang
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Time: 1 PM, Location: E6-2 #3441

Presentations

2025
16 - 19 September, 2025
The Physical Society of Japan 2025 Annual (80th) Meeting LINK
Hiroshima University, Hiroshima, Japan
Spectrum of the Hatano-Nelson model with binary disorder LINK
Geonhwi Hwang, Shoya Urano, and Hideaki Obuse
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Oral (Lecture No. 17pSK302-3)
16 - 19 September, 2025
The Physical Society of Japan 2025 Annual (80th) Meeting LINK
Hiroshima University, Hiroshima, Japan
Comparison of localization in the Hatano–Nelson and Sinai models via transfer matrix method and IPR analysis LINK
Shoya Urano, Geonhwi Hwang, and Hideaki Obuse
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Oral (Lecture No. 17pSK302-2), Presenter: Shoya Urano
16 - 19 September, 2025
The Physical Society of Japan 2025 Annual (80th) Meeting LINK
Hiroshima University, Hiroshima, Japan
Bulk-edge correspondence in continuous junction systems with point-gap topological phases avoiding discretization LINK
Aoki Yugawa, Geonhwi Hwang, and Hideaki Obuse
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Oral (Lecture No. 17pSK302-1), Presenter: Aoki Yugawa
4 - 8 August, 2024
ISSP-IIS Joint Symposium on Physics of Open Systems: Resonance, Symmetry and Topology LINK
The University of Tokyo, Kashiwa, Japan
Bulk-edge correspondence of junction systems for point-gap topological phases in continuous systems LINK
Aoki Yugawa, Geonhwi Hwang, and Hideaki Obuse
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Poster, Presenter: Aoki Yugawa
4 - 8 August, 2024
ISSP-IIS Joint Symposium on Physics of Open Systems: Resonance, Symmetry and Topology LINK
The University of Tokyo, Kashiwa, Japan
Comparing localization properties of the Hatano–Nelson and Sinai models via transfer matrix method LINK
Shoya Urano, Geonhwi Hwang, and Hideaki Obuse
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Poster, Presenter: Shoya Urano
4 - 8 August, 2024
ISSP-IIS Joint Symposium on Physics of Open Systems: Resonance, Symmetry and Topology LINK
The University of Tokyo, Kashiwa, Japan
The Spectrum for the Hatano-Nelson Model with Binary Random Potentials LINK
Geonhwi Hwang, Shoya Urano, and Hideaki Obuse
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Poster
18 - 21 March, 2025
The Physical Society of Japan 2025 Spring Meeting LINK
Online
Non-Hermitian proximity effect in continuous junction system with point-gap LINK
Aoki Yugawa, Geonhwi Hwang, and Hideaki Obuse
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Oral, presenter: Aoki Yugawa (Lecture No. 18pD1-7)
2024
22 - 26 October, 2024
2024 The Korean Physical Society Fall Meeting LINK
Yeosu Expo Convention Center, Yeosu, Republic of Korea
Non-Hermitian point-gap topology in junction systems LINK
Geonhwi Hwang and Hideaki Obuse
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Oral (Presentation No. J7.07)
16 - 19 September, 2024
The Physical Society of Japan 2024 Annual (79th) Meeting LINK
Hokkaido University, Sapporo, Japan
Junction systems' bulk edge correspondence of point-gap topological phases in continuous model LINK
Aoki Yugawa, Geonhwi Hwang, and Hideaki Obuse
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Oral, presenter: Aoki Yugawa (Lecture No. 16pE318-10)
16 - 19 September, 2024
The Physical Society of Japan 2024 Annual (79th) Meeting LINK
Hokkaido University, Sapporo, Japan
Localization phenomena in the Hatano-Nelson model with binary random potentials LINK
Geonhwi Hwang and Hideaki Obuse
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Oral (Lecture No. 16pE318-8)
5 - 9 August, 2024
New Frontiers in Advanced Magnetism 2024 LINK
Hokkaido University, Sapporo, Japan
Bulk-Edge Correspondence for Point-Gap Topological Phases in Multi-Segmented Junction Systems LINK
Geonhwi Hwang and Hideaki Obuse
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Poster
16 - 19 July, 2024
META 2024: 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics LINK
Toyama International Conference Center, Toyama, Japan
Dual Symmetry Classification of Non-Hermitian Systems and Point-Gap Topology LINK
Zhiyu Jiang, Geonhwi Hwang, and Hideaki Obuse
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Oral, presenter: Hideaki Obuse
18 - 21 March, 2024
The Physical Society of Japan 2024 Spring Meeting LINK
Online
Point-Gap Topological Phases and Bulk-Edge Correspondence in Junction Systems: Multi-Segment Extension LINK
Geonhwi Hwang and Hideaki Obuse
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Oral (Lecture No. 18pD1-1)
2023
26 SEP. - 05 OCT., 2023
Okinawa School in Physics 2023: Coherent Quantum Dynamics LINK
Okinawa Institute of Science and Technology, Onna-son, Okinawa, Japan
Bulk-Edge Correspondence for Point-Gap Topological Phases in Junction Systems LINK
Geonhwi Hwang and Hideaki Obuse
•
Poster
16 - 19 Sepember, 2023
The Physical Society of Japan 2023 Annual (78th) Meeting LINK
Tohoku University, Sendai, Japan
Point-Gap Topology and Proximity Effects in Non-Hermitian Junction Systems LINK
Geonhwi Hwang and Hideaki Obuse
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Oral (Lecture No. 18aA106-7)
17 - 23 August, 2023
Physics of Open Systems and Beyond LINK
Hokkaido University, Sapporo, Japan
Bulk-Edge Correspondence for Point-Gap Topological Phases in Junction Systems LINK
Geonhwi Hwang and Hideaki Obuse
•
Oral
3 - 4 April, 2023
Condensed Matter Science in the Age of Computation LINK
The University of Tokyo, Tokyo, Japan
Non-Hermitian Topological Phases and Arbitrary Precision Operations with Julia LINK
Geonhwi Hwang, Zhiyu Jiang, and Hideaki Obuse
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Oral, presenter: Hideaki Obuse
22 - 25 March, 2023
The Physical Society of Japan 2023 Spring Meeting LINK
Online
Bulk-Boundary Correspondence for Non-Hermitian Topological Phases in Junction Systems LINK
Geonhwi Hwang and Hideaki Obuse
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Oral (Lecture No. 23pD1-6)

Scholarships and Awards

October 2025
JSPS Research Fellowship for Young Scientists (DC2)
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Awarded competitive two-year fellowship by the Japan Society for the Promotion of Science (APR. 2026 - MAR. 2028); declined to serve in the Republic of Korea Army
APR. 2024 - SEP. 2025
Full Tuition Waiver (Doctoral Program)
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¥803,700 tuition support during active enrollment
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Self-funded from OCT. 2025 onward to serve in the Republic of Korea Army (waiver unavailable due to institutional policy for students with leave of absence)
October 2024
Hokkaido University EXEX Doctoral Fellowship (JST SPRING)
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Selected for two-year extension of fellowship support
APR. 2025 - MAR. 2027
EXEX Doctoral Fellow (Second-Third Year)
Graduate School of Engineering, Hokkaido University
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Full research support: ¥5.12M (stipend and research expenses)
September 2024
Hokkaido University EXEX Doctoral Fellowship (JST SPRING)
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Awarded Hokkaido University EXEX Doctoral Fellowship in its inaugural year, funded by Japan Science and Technology Agency's Support for Pioneering Research Initiated by the Next Generation (JST SPRING)
APR. 2024 - MAR. 2025
EXEX Doctoral Fellow (First Year)
Graduate School of Engineering, Hokkaido University
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Full research support: ¥2.56M (stipend and research expenses)
APR. 2022 - MAR. 2024
Tuition Waiver (Master's Program)
Graduate School of Engineering, Hokkaido University
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¥937,650 tuition support (50% first semester, 100% thereafter)
November 2016
Korea-Japan Joint Government Scholarship Program for Science and Engineering
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Awarded scholarship as 18th cohort member with national ranking of 40th in Republic of Korea
DEC. 2016 - SEP. 2017
Preliminary Education in Republic of Korea
Institute of International Education, Kyung Hee University
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Intensive Japanese language training and foundation courses in science and liberal arts
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Awarded ₩600,000/month for tuition, ₩600,000/month for living stipend, and travel expenses
OCT. 2017 - MAR. 2018
Preliminary Education in Japan
Institute for the Advancement of Higher Education, Hokkaido University
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Japanese courses and academic preparation for undergraduate studies
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Awarded ¥17,000 for entrance examination fee, ¥250,000 for tuition and ¥117,000/month for living stipend
APR. 2018 - MAR. 2022
Undergraduate Studies
School of Engineering, Hokkaido University
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Pre-assigned to Course of Applied Physics and Engineering upon scholarship acceptance (students typically select major in second year based on first-year performance)
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Awarded ¥282,000 for admission, ¥535,800/year for tuition, ¥117,000/month for living stipend, and travel expenses

Teaching Experiences

APR. 2025 - MAR. 2026
Teaching Fellow
School of Engineering, Hokkaido University
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Applied Mathematics I (lecture for second year undergraduate students, 1st semester)
APR. 2025 - MAR. 2026
Teaching Assistant
School of Engineering, Hokkaido University
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Applied Mathematics I (lecture for second year undergraduate students, 1st semester)
APR. 2024 - MAR. 2025
Teaching Fellow
School of Engineering, Hokkaido University
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Applied Mathematics II (lecture for second year undergraduate students, 2nd semester)
APR. 2024 - MAR. 2025
Teaching Assistant
School of Engineering, Hokkaido University
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Applied Mathematics II (lecture for second year undergraduate students, 2nd semester)
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Quantum Mechanics II (lecture for third year undergraduate students, 2nd semester)
APR. 2023 - MAR. 2024
Teaching Assistant
School of Engineering, Hokkaido University
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Applied Mathematics II (lecture for second year undergraduate students, 2nd semester)
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Quantum Mechanics II (lecture for third year undergraduate students, 2nd semester)
APR. 2022 - MAR. 2023
Teaching Assistant
School of Engineering, Hokkaido University
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Applied Mathematics I (lecture for second year undergraduate students, 1st semester)
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Applied Mathematics II (lecture for second year undergraduate students, 2nd semester)
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Quantum Mechanics II (lecture for third year undergraduate students, 2nd semester)

Links

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Korea-Japan Joint Science and Engineering Program