Zoe, Heeseung

Profile URL
https://hdl.handle.net/11147/16316
Name Variants
Job Title
Email Address
heeseungzoe@iyte.edu.tr
Main Affiliation
04.05. Department of Pyhsics
Status
Current Staff
Website
https://physics.iyte.edu.tr/wp-content/uploads/sites/83/2023/02/Curriculum_Vitae_Official.pdf
ORCID ID
0000-0003-4601-075X
Scopus Author ID
25650925100
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
DYZ-1833-2022

Sustainable Development Goals

SDG data is not available
Documents

20

Citations

198

h-index

8

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Documents

20

Citations

206

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Scholarly Output

4

Articles

4

Views / Downloads

867/726

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

46

Scopus Citation Count

49

Patents

0

Projects

0

WoS Citations per Publication

11.50

Scopus Citations per Publication

12.25

Open Access Source

2

Supervised Theses

0

JournalCount
Classical and Quantum Gravity1
International Journal of Modern Physics A1
Journal of Cosmology and Astroparticle Physics1
Molecular Physics1
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2011 - 201912020 - 20253

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Scholarly Output Search Results

Now showing 1 - 4 of 4
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Modeling Cosmological Perturbations of Thermal Inflation
    (IOP Publishing, 2024) Bae, Jeong-Myeong; Hong, Sungwook E.; Zoe, Heeseung
    We consider a simple system consisting of matter, radiation and vacuum components to model the impact of thermal inflation on the evolution of primordial perturbations. The vacuum energy magnifies the primordial modes entering the horizon before its domination, making them potentially observable, and the resulting transfer function reflects the phase changes and energy contents. To determine the transfer function, we follow the curvature perturbation from well outside the horizon during radiation domination to well outside the horizon during vacuum domination and evaluate it on a constant radiation density hypersurface, as is appropriate for the case of thermal inflation. The shape of the transfer function is determined by the ratio of vacuum energy to radiation at matter-radiation equality, which we denote by upsilon , and has two characteristic scales, ka and kb , corresponding to the horizon sizes at matter radiation equality and the beginning of the inflation, respectively. If upsilon MUCH LESS-THAN1 , the Universe experiences radiation, matter and vacuum domination eras and the transfer function is flat for kMUCH LESS-THANkb , oscillates with amplitude 1/5 for kbMUCH LESS-THANkMUCH LESS-THANka and oscillates with amplitude 1 for k >> ka . For upsilon >> 1 , the matter domination era disappears, and the transfer function reduces to being flat for kMUCH LESS-THANkb and oscillating with amplitude 1 for k >> kb .
  • Article
    Citation - WoS: 45
    Citation - Scopus: 48
    Semiclassical Black Holes With Large N Rescaling and Information Loss Problem
    (World Scientific Publishing Co. Pte Ltd, 2011) Yeom, Dong-Han; Zoe, Heeseung
    We consider semiclassical black holes and related rescalings with N massless fields. For a given semiclassical solution of an N = 1 universe, we can find other solution of a large N universe by the rescaling. After the rescaling, any curvature quantity takes a sufficiently small value without changing its causal structure. Via the rescaling, we argue that black hole complementarity for semiclassical black holes cannot provide a fundamental resolution of the information loss problem, and the violation of black hole complementarity requires sufficiently reasonable amounts of N. Such N might be realized from some string inspired models. Finally, we claim that any fundamental resolution of the information loss problem should resolve the problem of the singularity.
  • Article
    The Curvature Perturbation Generated by Thermal Fluctuations During Thermal Inflation
    (Iop Publishing Ltd, 2025) Bae, Jeong-Myeong; Mohammad, Hammam Raihan; Stewart, Ewan D.; Zoe, Heeseung
    During thermal inflation, the temperature determines the number of e-folds of expansion of the universe and so thermal fluctuations are magnified into curvature perturbations. We use classical thermodynamics to calculate the subhorizon thermal fluctuations and trace their evolution into superhorizon temperature perturbations. We convert the temperature perturbations into curvature perturbations using the delta N-formalism, or equivalently the junction condition of curvature perturbations at the end of thermal inflation, denoted by subscript c, and show that the late-time power spectrum is PR= 15 Hc 3 k3 4 pi 4 g & lowast;T 3 kc 3 . c
  • Article
    Analytical Techniques for Non-Relativistic Particles in the Presence of Topological Defects and External Potentials: Applications to Diatomic Molecules
    (Taylor & Francis Ltd, 2025) Joseph, Gabriel Wirdzelii; Targema, Terkaa Victor; Oyewumi, Kayode John; Omugbe, Ekwevugbe; Ajulo, Kayode Richard; Gabriel, Ochoche; Zoe, Heeseung
    In this paper, we examine the effects of point-like and cosmic string topological defects on non-relativistic particles confined within external potentials using analytical methods. The external potentials under consideration include the Hellmann-Kratzer potential, the standard Kratzer potential, the energy-dependent Kratzer potential, and the modified Kratzer potential. The modified Kratzer potential is employed to illustrate the impact of topological defects on diatomic molecules, demonstrating that these defects impose significant constraints on the molecules. In all defect types, the depth of the effective potential increases with increasing curvature. In these regions, molecules become trapped and experience a substantial reduction in energy in the case of point-like defects. Conversely, when particles propagate in a cosmic string background, their energy increases. When the constraints imposed by the topological defects on these molecules are removed, the results obtained in this study align well with existing literature. Thus, we establish beyond reasonable doubt the effects of topological defects on non-relativistic particles and, consequently, on diatomic molecules, which arise from the geometry of these defects. Additionally, we have employed analytical methods to obtain the solutions without introducing any modification to the centrifugal term. The approach is straightforward, highly efficient, and effective.