output
20142025
most citedObservational constraints on slow-roll inflation coupled to a Gauss-Bonnet term

99 citations

40 papers

cond-mat.mtrl-sci2025

Strain Engineering of van Hove Singularity and Coupled Itinerant Ferromagnetism in Quasi-2D Oxide Superlattices

Seung Gyo Jeong, Minjae Kim, Jin Young Oh +12

Engineering van Hove singularities (vHss) near the Fermi level, if feasible, offers a powerful route to control exotic quantum phases in electronic and magnetic behaviors. However,…

astro-ph.CO2025★ 4 cited

Updated observational constraints on CDM dynamical dark energy cosmological models

Chan-Gyung Park, Bharat Ratra

We present updated observational constraints on the spatially flat CDM model, where dark energy is described by a minimally coupled scalar field with an inverse power-law po…

hep-ph2025★ 1 cited

Cogenesis of baryon and lepton number asymmetries matching the EMPRESS Data

Kyu Jung Bae, Arghyajit Datta, Rinku Maji +1

We show that a simple supersymmetric extension of the standard model can explain simultaneously the large electron neutrino asymmetry hinted by the recent EMPRESS data…

astro-ph.CO2025★ 2 cited

Implications of pulsar timing arrays for Gauss-Bonnet Inflation

Reginald Christian Bernardo, Seoktae Koh, Gansukh Tumurtushaa

Correlated time-of-arrival measurements by pulsar timing arrays (PTAs) have provided a new means of constraining astrophysical or cosmological models that produce a gravitational w…

cond-mat.mes-hall2025

Method for rapid estimation of the energy-time covariance matrix of single electrons

Wanki Park, Chanuk Yang, Young-Seok Ghee +3

The ability to emit and control single electrons in a dynamical manner enables their use in electron quantum optics and sensing. To characterize the electron states emitted with en…

physics.ins-det2024

Performance of the prototype beam drift chamber for LAMPS at RAON with proton and Carbon-12 beams

H. Kim, Y. Bae, C. Heo +37

Beam Drift Chamber (BDC) is designed to reconstruct the trajectories of incident rare isotope beams provided by RAON (Rare isotope Accelerator complex for ON-line experiments) into…

hep-ex2024★ 19 cited

Search for the Decay at the J-PARC KOTO Experiment

KOTO Collaboration, J. K. Ahn, M. Farriagton +47

We performed a search for the decay using the data taken in 2021 at the J-PARC KOTO experiment. With newly installed counters and new analysis method, the ex…

astro-ph.CO2024★ 33 cited

Is the CDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck CMB anisotropy data?

Chan-Gyung Park, Javier de Cruz Perez, Bharat Ratra

We study the performance of the spatially-flat dynamical dark energy (DE) CDM parameterization, with redshift-dependent DE fluid equation of state parameter $w(z) = w_0 + w…

physics.ins-det2024★ 2 cited

Pulse Shape Discrimination in JSNS

T. Dodo, M. K. Cheoun, J. H. Choi +51

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\barν_μ \rightarrow \…

cond-mat.stat-mech2024★ 3 cited

Validity of annealed approximation in a high-dimensional system

Jaegon Um, Hyunsuk Hong, Hyunggyu Park

This study investigates the suitability of the annealed approximation in high-dimensional systems characterized by dense networks with quenched link disorder, employing models of c…

gr-qc2024★ 1 cited

Gradient conformal stationarity and the CMC condition in LRS spacetimes

Gareth Amery, Peter K S Dunsby, Abbas M Sherif

We study the existence of gradient conformal Killing vectors (CKVs) in the class of locally rotationally symmetric (LRS) spacetimes which generalizes spherically symmetric spacetim…

gr-qc2023★ 2 cited

On the existence of conformal Killing horizons in LRS spacetimes

Abbas M. Sherif

Let be a locally rotationally symmetric spacetime, and a conformal Killing vector for the metric on , lying in the subspace spanned by the unit timelike direction and…

gr-qc2023★ 11 cited

Thermodynamics with conformal Killing vector in the charged Vaidya metric

Seoktae Koh, Miok Park, Abbas M. Sherif

We investigate the charged Vaidya spacetime with conformal symmetry by classifying the horizons and finding its connection to Hawking temperature. We find a conformal Killing vecto…

hep-th2023★ 1 cited

Generalization of Instanton-Induced Inflation and Dynamical Compactification

Jeongwon Ho, Kyung Kiu Kim, Seoktae Koh +1

It was shown that Yang-Mills instantons on an internal space can trigger the expansion of our four-dimensional universe as well as the dynamical compactification of the internal sp…

hep-ex2023★ 1 cited

The acrylic vessel for JSNS-II neutrino target

C. D. Shin, S. Ajimura, M. K. Cheoun +57

The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at t…

hep-ex2023★ 5 cited

Study on the accidental background of the JSNS experiment

D. H. Lee, S. Ajimura, M. K. Cheoun +55

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of a…

hep-ph2023★ 21 cited

Gravitational waves from walls bounded by strings in model of pseudo-Goldstone dark matter

Rinku Maji, Wan-Il Park, Qaisar Shafi

We explore the gravitational wave spectrum generated by string-wall structures in an () based scenario of pseudo-Goldstone boson dark matter (pGDM) particle. Thi…

gr-qc2023★ 6 cited

Existence of gradient CKV and gradient conformally stationary LRS spacetimes

Seoktae Koh, Abbas M Sherif, Gansukh Tumurtushaa

In this work, we study the existence of gradient (proper) CKVs in locally rotationally symmetric spacetimes (LRS), those CKVs in the space spanned by the tangent to observers' cong…

hep-ph2023★ 9 cited

Light cold dark matter from non-thermal decay

Ki-Young Choi, Jinn-Ouk Gong, Junghoon Joh +2

We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or su…

hep-th2023★ 4 cited

Dynamical Compactification with Matter

Kyung Kiu Kim, Seoktae Koh, Gansukh Tumurtushaa

In this work, we study cosmological solutions of the 8-dimensional Einstein Yang-Mills theory coupled to a perfect-fluid matter. A Yang-Mills instanton of extra dimensions causes a…

gr-qc2023★ 10 cited

Wheeler-DeWitt equation beyond the cosmological horizon: Annihilation to nothing, infinity avoidance, and loss of quantum coherence

Chen-Hsu Chien, Gansukh Tumurtushaa, Dong-han Yeom

We investigate the Schwarzschild-(anti) de Sitter spacetime with the anisotropic metric ansatz. The Wheeler-DeWitt equation for such a metric is solved numerically. In the presence…

gr-qc2022

Configuration entropy and instability of accelerating black hole in AdS

Seoktae Koh, Chong Oh Lee

We consider an accelerating black hole with a negative cosmological constant in four-dimensional spacetime. There are two configurations such as a black string (BS) phase when a ma…

astro-ph.CO2022★ 29 cited

Current data are consistent with flat spatial hypersurfaces in the CDM cosmological model but favor more lensing than the model predicts

Javier de Cruz Perez, Chan-Gyung Park, Bharat Ratra

We study the performance of three pairs of tilted CDM cosmological models, two pairs allowing for non-flat spatial hypersurfaces with CMB temperature and polarization power spec…

gr-qc2022★ 13 cited

Dynamical analysis in regularized Einstein-Gauss-Bonnet gravity with non-minimal coupling

Bilguun Bayarsaikhan, Sunly Khimphun, Phearun Rithy +1

We investigate the regularized four-dimensional Einstein-Gauss-Bonnet ( EGB) gravity with a non-minimal scalar coupling function, which is an extension of the regularized …