PhySH, an abbreviation for Physics Subject Headings, is a classification scheme developed by the American Physical Society (APS) as an universal classification scheme covering all branches of physics including astronomy, quantum computation, and physics education. [1] This scheme was unveiled in January 2016. It substitutes the previous Physics and Astronomy Classification Scheme (PACS) of the American Institute of Physics (AIP) [2] and is currently the working tool for all journals of APS and all scientific Conferences and Meetings called by APS.
The American Physical Society (APS) is the world's second largest organization of physicists. The Society publishes more than a dozen scientific journals, including the prestigious Physical Review and Physical Review Letters, and organizes more than twenty science meetings each year. APS is a member society of the American Institute of Physics. Kate Kirby is APS's current chief executive officer. She took on the role on in February 2015.
The Physics and Astronomy Classification Scheme (PACS) is a scheme developed in 1970 by the American Institute of Physics (AIP) for classifying scientific literature using a hierarchical set of codes. PACS has been used by over 160 international journals, including the Physical Review series since 1975. Since 2016, American Physical Society introduced the PhySH system instead of PACS.
The American Institute of Physics (AIP) promotes science and the profession of physics, publishes physics journals, and produces publications for scientific and engineering societies. The AIP is made up of various member societies. Its corporate headquarters are at the American Center for Physics in College Park, Maryland, but the institute also has offices in Melville, New York, and Beijing.
PACS has been created by AIP in 1970s and AIP maintained and updated it until 2010, when AIP decided to keep PACS 2010 as its final version [3] because of the inherent limitations to the PACS system. [4] Under these conditions, and confronted with the necessity to operate an efficient classification system well accommodated to fast developments in various branches of physics, APS developed its own PhySH system. The development of PhySH started in 2012, and it has been unveiled in January 2016. Being word based, i.e., operating with regular English words rather than formal PACS codes, PhySH is much more intuitive than PACS. Also, new concepts originating in the course of the development of science can be organically incorporated into PhySH which creates a basis for its further development. Perpetual development is the idea laid into the basis of PhySH system which is expected to become the internationally recognized standard.
PhySH is based on three principal definitions: Disciplines, Facets, and Concepts. Their meaning can be best understood by browsing the PhySH webpage. [5] There are currently 17 disciplines, from Accelerators & Beams, through Biological Physics and Networks, to Statistical Physics. Five facets include Research Areas, Physical Systems, Properties, Techniques, and Professional topics. Clicking on them opens lists of related concepts. Using the Search option for a specific term opens a string, or a set of strings, each of them beginning with the related facet that is followed by a set of concepts, beginning from broader and going to more specific. E.g., searching for Van der Waals results in three strings. One of them reads as:
Physical systems > 3-dimensional systems > Complex materials > Heterostructures > Van der Waals heterostructures
Such architecture of PhySH allows its easy extension, and PhySH is considered as a permanently developing rather than finished project. Authors of papers submitted to American physical journals are encouraged to provide editors with PhySH terms to assist in choosing proper reviewers, and some journals even require providing PhySH terms. PhySH is expected to expand with the grows of physics, and this should happen technically through the input coming from authors, reviewers, editors, and organizers of scientific conferences.
The Mathematics Subject Classification (MSC) is an alphanumerical classification scheme collaboratively produced by staff of, and based on the coverage of, the two major mathematical reviewing databases, Mathematical Reviews and Zentralblatt MATH. The MSC is used by many mathematics journals, which ask authors of research papers and expository articles to list subject codes from the Mathematics Subject Classification in their papers. The current version is MSC2010.
A library classification is a system of knowledge organization by which library resources are arranged and ordered systematically. Library classifications use a notational system that represents the order of topics in the classification and allows items to be stored in that order. Library classification systems group related materials together, typically arranged as a hierarchical tree structure. A different kind of classification system, called a faceted classification system, is also widely used which allows the assignment of multiple classifications to an object, enabling the classifications to be ordered in multiple ways.
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of physical phenomena and the analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies.
The following outline is provided as an overview of and topical guide to physics:
A faceted classification is a classification scheme used in organizing knowledge into a systematic order. A faceted classification uses semantic categories, either general or subject-specific, that are combined to create the full classification entry. Many library classification systems use a combination of a fixed, enumerative taxonomy of concepts with subordinate facets that further refine the topic.
Nina Byers was a theoretical physicist, Research Professor and Professor of Physics emeritus in the Department of Physics and Astronomy, UCLA, and Fellow of Somerville College, Oxford.
The ACM Computing Classification System (CCS) is a subject classification system for computing devised by the Association for Computing Machinery (ACM). The system is comparable to the Mathematics Subject Classification (MSC) in scope, aims, and structure, being used by the various ACM journals to organise subjects by area.
Shlomo Havlin is a Professor in the Department of Physics at Bar-Ilan University, Ramat-Gan, Israel. He served as President of the Israel Physical Society (1996–1999), Dean of Faculty of Exact Sciences (1999–2001), Chairman, Department of Physics (1984–1988).
Antimony telluride is an inorganic compound with the chemical formula Sb2Te3. As is true of other pnictogen chalcogenide layered materials, it is a grey crystalline solid with layered structure. Layers consist of two atomic sheets of antimony and three atomic sheets of tellurium and are held together by weak van der Waals forces. Sb2Te3 is a narrow-gap semiconductor with a band gap 0.21 eV; it is also a topological insulator, and thus exhibits thickness-dependent physical properties.
Astroinformatics is an interdisciplinary field of study involving the combination of astronomy, data science, machine learning, informatics, and information/communications technologies.
Timir Datta is an Indian-American physicist specializing in high transition temperature superconductors and a professor of physics in the department of Physics and Astronomy at the University of South Carolina, in Columbia, South Carolina.
Duncan G. Steel is an American experimental physicist, researcher and professor in quantum optics in condensed matter physics. He is the Robert J. Hiller Professor of Electrical Engineering, Professor of Physics, Professor of Biophysics, and Research Professor in the Institute of Gerontology at the University of Michigan. Steel is also a Guggenheim Scholar and a Fellow of American Physical Society, the Optical Society of America, and the Institute of Electrical and Electronics Engineers. He coedited the five-volume series on the Encyclopedia of Modern Optics.
Physics outreach encompasses facets of science outreach and physics education, and a variety of activities by schools, research institutes, universities, clubs and institutions such as science museums aimed at broadening the audience for and awareness and understanding of physics. While the general public may sometimes be the focus of such activities, physics outreach often centers on developing and providing resources and making presentations to students, educators in other disciplines, and in some cases researchers within different areas of physics.
David Joseph Singh is a theoretical physicist who is a curators' professor in the Department of Physics and Astronomy at the University of Missouri in Columbia, Missouri. He was previously a corporate fellow at the Oak Ridge National Laboratory (ORNL).
Richard A. Webb was an experimental solid-state physicist who is particularly noted for his work on the electronic properties of mesoscopic systems.
Robert R. Caldwell is an American theoretical physicist and Professor of Physics and Astronomy at Dartmouth College. His research interests include cosmology and gravitation. He is known primarily for his work on theories of cosmic acceleration, in particular dark energy, quintessence, and the Big Rip scenario.
Frans Pretorius is a South African and Canadian physicist, specializing in computer simulations in astrophysics and numerical solutions of Einstein's field equations. He is professor of physics at Princeton University and director of the Princeton Gravity Initiative.
Kate Page Kirby is an American physicist. As of February 2015, Kirby became the chief executive officer of the American Physical Society (APS) and sits on the board of directors of the American Institute of Physics. Kate Kirby was elected a fellow of the American Physical Society (APS) in 1989 for her "innovative application of methods of quantum chemistry to the quantitative elucidation of a diverse range of molecular phenomena." She was made a fellow of the American Association for the Advancement of Science (AAAS) in 1996 for her contributions to physics.