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Sezgin Altay Demirbağ is a Professor at the Department of Mathematics, Istanbul Technical University. His research focuses on differential geometry and theoretical physics, particularly spacetime structures, curvature tensors, and modified gravity theories. He has led numerous projects exploring pseudo-symmetric spacetimes, Ricci solitons, and F(R)-gravity, reflecting his expertise in geometric analysis and gravitational physics. Key research interests include Einstein-type spacetimes, quasi-constant curvature, and geometric flows. His work bridges pure mathematics and theoretical physics, addressing questions in general relativity and cosmology. He has published extensively, including studies on perfect fluid spacetimes and F(R,T)-gravity models. Dr. Demirbağ has been the Principal Investigator (PI) for five major projects since 2014, including 'Characterization of Spacetimes with Quasi-Constant Curvature and F(R)-Gravity' (2024) and 'Generalized Ricci Solitons with Special Vector Fields' (2023-2024). These projects highlight his contributions to advancing geometric and physical theories of spacetime. His ORCID profile (0000-0002-6643-6267) and email (saltay@itu.edu.tr) provide further access to his work. He is based at ITU's Ayazaga Campus in Istanbul, Turkey.

• Differential Geometry
• Theoretical Physics
• General Relativity
• +3 more

Claus Kiefer is a Professor at the University of Cologne, affiliated with the Mathematical Institute. His research focuses on quantum gravity, cosmology, and the interplay between quantum mechanics and general relativity. He holds a PhD from Heidelberg University (1988) and has been a faculty member at Cologne since 2001. Kiefer's work explores foundational questions in quantum cosmology, black hole physics, and the emergence of classical behavior from quantum systems. He has contributed to topics like gravitational collapse, time's arrow, and wormhole dynamics. His publications span theoretical frameworks, including quantum geometrodynamics and modified gravity theories. Kiefer has collaborated extensively with researchers globally and edited volumes honoring pioneers in the field. His research bridges mathematical rigor and physical interpretations, addressing challenges in unifying quantum theory with gravity.

• Quantum Gravity
• Cosmology
• General Relativity
• +3 more

Ertan Güdekli is a researcher at Istanbul University, focusing on theoretical physics and astrophysics. His work spans modified gravity theories, dark energy models, black hole thermodynamics, and cosmological frameworks. He frequently collaborates on interdisciplinary studies involving particle dynamics, quantum corrections, and observational constraints. Research Focus: Modified gravity (f(R,T), Rastall, Horndeski), dark energy, black hole physics, wormhole solutions, and cosmological models. Methodology: Utilizes quasi-periodic oscillations (QPOs), trajectory analysis, and thermodynamic principles to test gravitational theories. Recent Contributions: Investigates anisotropic stellar models, tidal effects in rotating black holes, and holographic inflation scenarios. Collaborations: Active in international research networks, co-authoring studies with physicists from Turkey, Pakistan, India, and Germany. Academic Output: Over 148 publications (WoS), 76 citations (WoS), and 13 thesis advisories. His work appears in high-impact journals like Annals of Physics , Physics of the Dark Universe , and Nuclear Physics B . He also contributes to educational literature, editing a Temel Fizik textbook series.

• Modified Gravity Theories
• Dark Energy and Cosmology
• Black Hole Physics
• +7 more

ŞAHİN KÜREKCİ is a Researcher at the Department of Physics, Faculty of Arts and Sciences, Middle East Technical University (METU), Turkey. He holds a PhD from METU, completed in 2023 with a thesis on 'Optical classification and reconstruction through multimode fibers.' His research focuses on optics and photonics, particularly wavefront shaping, multimode fibers, and spectral characterization through scattering media. He has contributed to high-impact journals like ACS Photonics and Physical Review D . Education: PhD in Physics, METU (2015–2023) MSc in Physics, METU (2013–2015) BSc in Physics, METU (2009–2013) His research interests span experimental and theoretical optics, including deep learning applications for image transmission through multimode fibers, entropy in gravitational theories, and compact spectrometer designs. He has secured grants, such as the 'Rastgele Saçılmanın Işığın Frekansına Verdiği Tepkinin Hesaplanması' project (2018–2019). He has also developed patents for compact holographic spectrometers and interference-based spectral analysis systems. In 2022, he received the Poster Award (Second Place) at Fotonik 2022 for his work on picometer-resolution spectrometry. His teaching includes undergraduate physics courses like GENERAL PHYSICS I, II, and III.

• Optics
• Photonics
• Physics
• +3 more

Mustafa Azreg is an Associate Professor at the Department of Industrial Engineering, College of Engineering, Baskent University . His research focuses on General Relativity, Quantum Gravity, Black Holes, Wormholes, Gravitational Lensing, and Modified Gravity . He earned his PhD in Theoretical Physics from Nice-Sophia Antipolis in 1995. H-index: 22 Total Publications: 784 Citations: 4 Scientific Awards: 11 Recent work includes gravitational wave radiation from Schwarzschild-MOG black holes (2025) and observational tests of R2 gravity (2024). His research trends emphasize spacetime dynamics, quantum effects in gravity, and constraints from astrophysical observations . Editorial Roles: Reviewer for Annals of Physics , Classical and Quantum Gravity , and others (2022-2023). Labs: Mechanical Laboratory, Electrical Laboratory. Scientific Awards : IOP Trusted Reviewer Award (2023) Certificates of Reviewing (2022-2023) for journals including Physics of the Dark Universe and Classical and Quantum Gravity .

• General Relativity
• Quantum Gravity
• Black Holes
• +7 more

Assoc. Prof. Arzu ÇİLLİ is affiliated with Yıldız Technical University in the Faculty of Arts & Science, Department of Physics . Her academic career spans over 25 years, with roles progressing from Research Assistant (1991-1999) to Assistant Professor (1999-2015) and currently Associate Professor (2015-continues). She serves as Head of the Department Promotion and Alumni Relations Committee (2019-continues) and previously as Head of Department (2008-2009). Her research bridges Mathematical Physics with applications in Composite Materials and Epidemic Modeling . Key areas include fracture mechanics of layered composites, torsional wave propagation in pre-stressed structures, and AI-driven disease prediction models (ANFIS, SIR, SI/SIS). She has secured institutional funding for AI-based composite material analysis (2024-2025). Recent publications focus on: 2024 : f(Q,Lm) gravity cosmology and black hole particle dynamics 2022 : AI-enhanced fracture criteria analysis 2019 : FGM sphere vibrations and epidemic modeling She has peer-reviewed for journals like Sigma Journal and AIP Conference Proceedings , and organized scientific events including the Türk Fizik Derneği congresses. Her 2016-2025 academic jury service includes PhD and Master's thesis evaluations at Istanbul and Yıldız Universities. Scientific Awards : 2016 Türk Fizik Derneği Onur Ödülü

• Mathematical Physics
• Composite Materials
• Epidemic Modeling
• +6 more

Ali Kazım ÇAMLIBEL is an Assistant Professor at the Turkish-German University, Faculty of Engineering, Department of Electrical and Electronics Engineering. He completed his PhD and Master’s in Physics at Boğaziçi University, focusing on dark energy and cosmological models. His academic journey includes roles as Research Assistant at Boğaziçi University (2006) and Assistant Professor at Turkish-German University (2017–present). Doctorate: Boğaziçi University (2009–2016), Physics Master’s: Boğaziçi University (2006–2009), Physics Licence: Boğaziçi University (2000–2005), Physics His research spans mathematical physics, general relativity, and cosmology, with a focus on dark energy dynamics, supernova data analysis, and observational cosmology. He has also explored machine learning applications in cosmology, particularly in dark matter interactions and expansion history of the universe. Recent work includes phenomenological treatments of dark matter self-interactions (2025) and weak-field limits in modified gravity theories (2023). His publications analyze cosmological datasets, including Pantheon supernova data, and explore connections between dark matter, dark energy, and the universe’s expansion history. While his primary affiliation is with an Electrical and Electronics Engineering department, his research remains rooted in theoretical and observational cosmology.

• Mathematical Physics
• General Relativity
• Cosmology
• +3 more

Dr. Işıl Öz is an Assistant Professor in the Computer Engineering Department at Izmir Institute of Technology (IZTECH). She holds a B.Sc. and M.Sc. in Computer Engineering from Marmara University and a Ph.D. from Boğaziçi University. Before joining IZTECH in 2018, she worked as a postdoctoral researcher and ERCIM/Marie Curie Fellow at the Swedish Institute of Computer Science (SICS). Her research focuses on computer architecture, performance optimization, and reliability of multi-core systems, with a strong emphasis on fault-tolerant computing and GPGPU applications. Key projects include the TÜBİTAK-funded FTGPGPU initiative analyzing hardware fault tolerance for GPU applications. She teaches courses such as Operating Systems, Advanced Computer Architecture, and Parallel Programming Patterns. Her work spans machine learning-based vulnerability prediction, compiler design for reliable execution, and approximation techniques for efficient parallel computing. Publications appear in venues like ACM Computing Surveys, The Journal of Supercomputing, and International Journal of Parallel Programming. Awards: ERCIM/Marie Curie Fellowship Labs/Teams: Parsiyte Research Group (focused on parallel and distributed systems) Grants: TÜBİTAK ARDEB 3501 (FTGPGPU project)

• Computer Architecture
• Multi-core Systems
• Fault-Tolerant Computing
• +4 more

Professor Metin Gürses specializes in mathematical physics at Bilkent University, focusing on integrable systems and exact solutions in gravity theories. Key research areas include: Exact solutions in general relativity and modified gravity (Kerr-Schild, Gödel-type metrics) Integrability of nonlinear PDEs and soliton equations Poisson structures and Hamiltonian dynamics Nonlocal reductions of integrable systems His work bridges geometric methods with analytical techniques to solve complex field equations, with applications spanning gravity theories, fluid dynamics, and mathematical physics. Recent publications explore Kerr-Schild-Kundt metrics in extended gravity frameworks and soliton solutions in nonlocal equations.

• General Relativity
• Integrable Systems
• Nonlinear PDEs
• +2 more

Prof. Tolga Birkandan is a faculty member at Istanbul Technical University's Department of Physics Engineering, College of Engineering. He specializes in theoretical physics, focusing on exact solutions in general relativity, wave equations, and mathematical physics. His research integrates computational methods with theoretical models, addressing topics like scalar fields, black holes, and noncommutative geometries. Role: Professor, Department of Physics Engineering Affiliation: Istanbul Technical University Research Interests: General Relativity and Exact Solutions Wave Equation Analysis in Curved Spacetimes Mathematical Physics (Differential Equations, Heun Functions) Quantum Gravity and Extended Uncertainty Principle Computational Methods in Theoretical Physics Notable Contributions: His work includes studies on scalar fields in electromagnetic environments, symbolic analysis of differential equations, and numerical computations of Heun functions. Projects like the 'Series Convolution Approach to Wave Equation Solutions' (2024-2025) highlight his methodological innovation. Received ITU Distinguished Educator Award (2012) PI of project 'Seri Evrişimi Yöntemiyle Dalga Denklemi Çözümleri' funded by BAP (2024-2025)

• Theoretical Physics
• Quantum Mechanics
• General Relativity
• +5 more

Emre Onur Kahya is a Professor at the Department of Physics Engineering, Istanbul Technical University. His primary research focuses on theoretical cosmology, quantum gravity, and inflationary physics. He has been the Principal Investigator (PI) on multiple projects funded by TÜBİTAK and BAP, including studies on adiabatic modes, conformally coupled scalars during inflation, and optimization methods in artificial learning. His work addresses fundamental questions in cosmology such as observational tensions in cosmic models, quantum effects on scalar fields, and gravitational wave physics. He has received notable awards including the Young Scientist Award (2016), Mustafa Parlar Research Encouragement Award (2017), and the GEBİP Outstanding Young Scientist Award (2015). His publications span topics like Horndeski gravity, Carrollian fermion quantization, and constraints on gravitational wave delays using IceCube data. Kahya’s research also involves collaborations on testing modified gravity models, dark energy survey results, and pulsar timing experiments. Key projects include studies on adiabatic solutions on limited manifolds, constraint equations in quantum gravity, and inflationary attractors. His work bridges theoretical frameworks with observational data, contributing to advancements in cosmological models and quantum field theory in curved spacetime.

• Cosmology
• Quantum Gravity
• Inflationary Theories
• +5 more

Özgür Akarsu is a Professor at the Department of Physics Engineering, Istanbul Technical University. His research focuses on cosmological models, dark energy, modified gravity theories, and resolving cosmological tensions like the Hubble constant discrepancy. He leads multiple projects funded by TÜBİTAK and BAP, including studies on ΛsCDM cosmology and dark energy dynamics. Key contributions include exploring sign-switching cosmological constants, mapping modified gravity scenarios, and analyzing neutrino properties in cosmological frameworks. His work integrates observational data from Planck and galaxy surveys, addressing fundamental questions in late-universe expansion and structure growth. Education: Not explicitly stated in text. Research Interests: Cosmological Models, Dark Energy, Modified Gravity, General Relativity, Neutrino Physics. Recent projects include 'Bridgingcosmology' (2025–2027) and 'LsCDM model effects on cosmic structures' (2023–2024). Collaborations span international institutions, focusing on CDM extensions and dark energy parametrization. Over 65 publications since 2010, with notable contributions to Physical Review D and Monthly Notices of the Royal Astronomical Society.

• Cosmological Models
• Dark Energy
• Modified Gravity
• +5 more

Abdurrahman Savaş Arapoğlu is a Professor at the Department of Physics Engineering, Istanbul Technical University. His research focuses on cosmology, general relativity, scalar field theories, and neutron star physics. He is actively involved in projects investigating cosmological phase transitions and gravitational wave dynamics. He has led TÜBİTAK-funded projects on cosmological phase transitions and gravitational waves (2021-2024) and currently directs a BAP project on O(D,D)-symmetric cosmological dynamics (2024-2025). His work bridges theoretical frameworks with observational cosmology, contributing to our understanding of dark energy and modified gravity. Key research areas include: Scalar-tensor theories and their cosmological implications Phase transitions in anisotropic universes Gravitational wave signatures from early universe processes His recent publications (2020-2024) address topics like neutron star mass-radius relations, stability analysis in stringy gravity, and numerical solutions to modified gravity scenarios.

• Cosmology
• General Relativity
• Scalar Field Theories
• +4 more

Emre Demir serves as Assistant Professor at Istinye University within the Vocational School of Health Care Services, specifically in the Department of Medical Services and Techniques. His academic foundation combines healthcare vocational context with deep theoretical physics expertise. His educational journey includes: Bachelor of Science in Physics, Ankara University (2011) Master of Science in Mathematical Physics, Istanbul University, Institute of Science (2019) Professor Demir's research bridges theoretical physics with potential healthcare applications through investigations of gravitational phenomena. His work examines charged stellar structures, quantum-corrected black holes, and modified gravity frameworks with particular attention to particle dynamics and observational signatures. The research employs advanced mathematical techniques from general relativity and quantum gravity to model complex astrophysical systems. His 2024 publications reveal concentrated activity in gravitational physics, featuring multiple studies on black hole dynamics with quantum corrections and dark matter interactions. The research demonstrates consistent focus on mathematical modeling of extreme gravitational environments while maintaining connections to observable phenomena like quasi-periodic oscillations. Professor Demir maintains active research collaborations, particularly with Güdekli Ertan on projects spanning anisotropic stellar structures and conformal invariance in modified gravity. His work on 'Calibration of Pressure Balances' with DURGUT YASİN indicates additional interdisciplinary engagement. While specific grant details aren't provided, his publication output suggests ongoing research activity within Istinye University's academic framework.

• Physics
• Theoretical Astrophysics
• Gravitational Physics
• +3 more

Neslihan Oflaz is a Lecturer at the Department of Mathematics, Faculty of Arts and Sciences, Yeditepe University. With a dual academic background in Mathematics and Physics, she holds a PhD in Physics from Koç University (2015) and a Bachelor's degree in Mathematics from Middle East Technical University (2007), complemented by a Physics minor (2006). PhD: Koç University, Physics (2015) Master's: Koç University, Physics (2009) BSc: Middle East Technical University, Mathematics (2007) Physics Minor: Middle East Technical University (2006) Her research focuses on cosmology and modified gravity theories, particularly analyzing accelerated expansion models and anisotropic cosmologies through Brans-Dicke gravity and higher-dimensional frameworks. She has contributed to nonlinear optical phenomena studies and geometric scattering problems. Recent publications explore nonlinear permittivity effects in Kerr slabs, incoherent nonlinearity in optical systems, and geometric constraints on particle motion. These works reflect her interdisciplinary approach bridging mathematical physics and cosmology. Full Scholarship, Koç University PhD program Dr. Oflaz teaches undergraduate and graduate courses in mathematics, including Linear Algebra, Differential Equations, Discrete Mathematics, and senior project seminars. She combines theoretical physics insights with mathematical rigor in her pedagogy.

• Cosmology
• Theoretical Physics
• Modified Gravity
• +3 more