8.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Asia Pacific Center for Theoretical PhysicsKR600 papers
- Institute for Basic ScienceKR238 papers
- Seoul National UniversityKR166 papers
- Korea Institute for Advanced StudyKR138 papers
- Korea Advanced Institute of Science and TechnologyKR103 papers
- Pohang Accelerator Laboratory91 papers
- Rutgers, The State University of New JerseyUS74 papers
- Lawrence Berkeley National LaboratoryUS67 papers
- Yonsei UniversityKR60 papers
- Korea UniversityKR57 papers
- Pusan National UniversityKR57 papers
- Sungkyunkwan UniversityKR57 papers
59 papers · 1 filter
Heterotic Action in SUGRA-SYM Background
Jaemo Park, Cheol Ryou, Woojoo Sim
We consider the generalization of the heterotic action considered by Cherkis and Schwarz where the chiral bosons are introduced in a manifestly covariant way using an auxiliary fie…
Dependence of quantum-Hall conductance on the edge-state equilibration position in a bipolar graphene sheet
Dong-Keun Ki, Seung-Geol Nam, Hu-Jong Lee +1
By using four-terminal configurations, we investigated the dependence of longitudinal and diagonal resistances of a graphene p-n interface on the quantum-Hall edge-state equilibrat…
Hadrons from a hard wall AdS/QCD model
Hyun-Chul Kim, Youngman Kim, U. T. Yakhshiev
We review a recent work on masses of mesons and nucleons within a hard wall model of holographic QCD in a unified approach. In order to treat meson and nucleon properties on the sa…
Resonant Coherent Phonon Generation in Single-Walled Carbon Nanotubes through Near-Band-Edge Excitation
Y. -S. Lim, J. -G. Ahn, J. -H. Kim +6
We have observed large-amplitude coherent phonon oscillations of radial breathing modes (RBMs) in single-walled carbon nanotubes excited through the lowest-energy (E11) interband t…
Antiferromagnetic and structural transitions in the superoxide KO2 from first principles: A 2p-electron system with spin-orbital-lattice coupling
Minjae Kim, Beom Hyun Kim, Hong Chul Choi +1
KO2 exhibits concomitant antiferromagnetic (AFM) and structural transitions, both of which originate from the open-shell 2p electrons of O molecules. The structural trans…
30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes
Sukang Bae, Hyeong Keun Kim, Youngbin Lee +13
We report that 30-inch scale multiple roll-to-roll transfer and wet chemical doping considerably enhance the electrical properties of the graphene films grown on roll-type Cu subst…
Time and Amplitude of Afterpulse Measured with a Large Size Photomultiplier Tube
K. J. Ma, W. G. Kang, J. K. Ahn +21
We have studied the afterpulse of a hemispherical photomultiplier tube for an upcoming reactor neutrino experiment. The timing, the amplitude, and the rate of the afterpulse for a…
Nuclear matter to strange matter transition in holographic QCD
Youngman Kim, Yunseok Seo, Sang-Jin Sin
We construct a simple holographic QCD model to study nuclear matter to strange matter transition. The interaction of dense medium and hadrons is taken care of by imposing the force…
Stochastic Resonance of a Flexible Chain Crossing over a Barrier
Mesfin Asfaw, Wokyung Sung
We study the stochastic resonance (SR) of a flexible polymer surmounting a bistable-potential barrier. Due to the flexibility that can enhance crossing rate and change chain confor…
Characterizing completely regular codes from an algebraic viewpoint
J. H. Koolen, W. S. Lee, W. J. Martin
We first summarize the basic structure of the outer distribution module of a completely regular code. Then, employing a simple lemma concerning eigenvectors in association schemes,…
Weak value measurement with an incoherent measuring device
Young-Wook Cho, Hyang-Tag Lim, Young-Sik Ra +1
In the Aharonov-Albert-Vaidman (AAV) weak measurement, it is assumed that the measuring device or the pointer is in a quantum mechanical pure state. In reality, however, it is ofte…
Effect of helical edge states on the tunneling conductance in ferromagnet/noncentrosymmetric superconductors junctions
Soumya Prasad Mukherjee
Helical edge states exist in the mixed spin-singlet and spin-triplet phase of a noncentrosymmetric (NCS) superconductor. In this article we have considered a planar ferromagnetic m…
On the Product in Negative Tate Cohomology for Finite Groups
Haggai Tene
Our aim in this paper is to give a geometric description of the cup product in negative degrees of Tate cohomology of a finite group with integral coefficients. By duality it corre…
Arithmetic completely regular codes
J. H. Koolen, W. S. Lee, W. J. Martin +1
In this paper, we explore completely regular codes in the Hamming graphs and related graphs. Experimental evidence suggests that many completely regular codes have the property tha…
Coexisting multiple dynamic states generated by magnetic field in Bi-2212 stacked Josephson junctions
Yong-Duk Jin, Hu-Jong Lee, A. E. Koshelev +2
Josephson vortices in naturally stacked Bi-2212 tunneling junctions display rich dynamic behavior that derives from the coexistence of three basic states: static Josephson vortex l…
-signatures, homology localization, and amenable groups
Jae Choon Cha, Kent E. Orr
Aimed at geometric applications, we prove the homology cobordism invariance of the -betti numbers and -signature defects associated to the class of amenable groups lying…
An algorithm for computing cutpoints in finite metric spaces
A. Dress, K. T. Huber, J. Koolen +2
The theory of the tight span, a cell complex that can be associated to every metric , offers a unifying view on existing approaches for analyzing distance data, in particular fo…
Observing photonic de Broglie waves without the NOON state
Osung Kwon, Young-Sik Ra, Yoon-Ho Kim
The photonic de Broglie wave, in which an ensemble of identical photons with wavelength reveals interference fringes, has been known to be a unique feature exhibited…
Covering Points by Disjoint Boxes with Outliers
Hee-Kap Ahn, Sang Won Bae, Erik D. Demaine +5
For a set of n points in the plane, we consider the axis--aligned (p,k)-Box Covering problem: Find p axis-aligned, pairwise-disjoint boxes that together contain n-k points. In this…
Storage and Retrieval of Thermal Light in Warm Atomic Vapor
Young-Wook Cho, Yoon-Ho Kim
We report slowed propagation and storage and retrieval of thermal light in warm rubidium vapor using the effect of electromagnetically-induced transparency (EIT). We first demonstr…
Tuning the graphene work function by electric field effect
Young-Jun Yu, Yue Zhao, Sunmin Ryu +3
We report variation of the work function for single and bi-layer graphene devices measured by scanning Kelvin probe microscopy (SKPM). Using the electric field effect, the work fun…
The cobordism group of homology cylinders
Jae Choon Cha, Stefan Friedl, Taehee Kim
Garoufalidis and Levine introduced the homology cobordism group of homology cylinders over a surface. This group can be regarded as a generalization of the mapping class group. Usi…
Graphs having many holes but with small competition numbers
Jung Yeun Lee, Suh-Ryung Kim, Seog-Jin Kim +1
The competition number k(G) of a graph G is the smallest number k such that G together with k isolated vertices added is the competition graph of an acyclic digraph. A chordless cy…
Mesons and nucleons from holographic QCD in a unified approach
Hyun-Chul Kim, Youngman Kim, Ulugbek Yakhshiev
We investigate masses and coupling constants of mesons and nucleons within a hard wall model of holographic QCD in a unified approach. We first examine an appropriate form of fermi…