Bibliometric data used for calculating the relevant citation metrics were collected as of January 12, 2026. The position of each scientist within the ranking is determined by a researcher’s D-index (Discipline H-index), a calibrated metric that encompasses only publications and citations within the specific discipline under review—in this case, Physics—ensuring a precise reflection of scholarly impact in that area.
Scope of Research and Ranking Criteria
The ranking is based on an exhaustive examination of 188,172 scientist profiles aggregated from an array of bibliometric sources spanning all scientific disciplines, with a focused subset of 1,000 scientists specifically identified in the discipline of Physics. To qualify for inclusion in the Physics ranking, a scientist must possess a D-index of at least 70, with the majority of their tier publications concentrated within the field of Physics.
Additionally, awards and notable achievements specifically related to Physics are incorporated as supplementary evaluative factors. The D-index threshold for each discipline is dynamically set in increments of 10, calibrated against the total number of scholars estimated in that discipline to ensure representation of the top 1% of leading researchers. Moreover, to ensure disciplinary focus and consistency, candidates must exhibit a proximity of 30% or less between their overall H-index and their D-index, thus affirming their specialization within Physics.
Verification and Validation Practices
Recognizing that raw bibliometric data alone cannot serve as an absolute gauge of scholarly output, the evaluation team undertook rigorous manual verification of all scientist profiles. This process involved cross-correlating the bibliometric data against publications and records from a wide range of trustworthy and authoritative academic sources.
While not influencing researchers’ placement in the ranking directly, the number of papers published in prominent journals and reputable conference proceedings is regarded as an important secondary signal of a scientist’s contribution to their field.
Positions in the ranking are ultimately established based on each researcher’s D-index, calculated from data drawn from OpenAlex and CrossRef, two of the most prominent and trusted bibliometric databases available to the academic research community.
For a comprehensive understanding of the methodology underpinning this ranking, we encourage readers to visit our methodology page.
Research.com’s Mission Behind the Ranking
Research.com is committed to motivating researchers, industry leaders, and policymakers worldwide to closely monitor the trajectory of leading experts across various scientific domains. This ranking serves as a vital resource by identifying and highlighting the foremost scientists in Physics within Saudi Arabia, providing the global scientific community, academic institutions, and decision-makers with transparent and meticulously curated insight into who the leading contributors are in specific areas of study, by country, and even within individual research organizations.
Through our rigorous and transparent approach, we aim to foster collaboration, innovation, and targeted investment in science and technology by showcasing exemplary scholarly achievement across disciplines.
