Stuart Raby

Key takeaways

Stuart Raby belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Stuart Raby to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Stuart Raby from memory before moving on to harder problems.

Reference excerpt

Stuart A. Raby is an American physicist and professor at The Ohio State University, known for his work in theoretical physics. His research focuses on physics beyond the Standard Model, including the grand unification of fundamental forces, supersymmetric theories, and string theory model building.

Early life and education Raby was born in the Bronx, New York, and raised in Palisades Park, New Jersey, he completed his undergraduate education at the University of Rochester in 1969. He pursued graduate studies at Tel Aviv University, earning an M.Sc. in physics in 1973 under the supervision of Professor David Horn (Israeli physicist). His research focused on quantum mechanics and mathematical methods for physicists. He continued at Tel Aviv University for his doctoral studies, receiving his Ph.D. in 1976 under the guidance of Professor Lawrence Paul Horwitz.

Academic career From 1976 to 1978, Raby served as a research associate at Cornell University. He then joined Stanford University as an acting assistant professor from 1978 to 1980, teaching advanced graduate courses in electrodynamics, statistical mechanics, and general relativity. In 1980, Raby transitioned to the Stanford Linear Accelerator Center (SLAC) as a research associate. The following year, he began his association with the Los Alamos National Laboratory, initially as a temporary staff member. Over the next eight years, he rose to the position of group leader of T-8 in the Theory Division, overseeing research in theoretical particle physics. During 1982–1983, Raby held a visiting associate research scientist position at the University of Michigan. In 1989, Raby joined The Ohio State University as a full professor of physics, a role he continues to hold.

Work

Strong interaction dynamics T. Banks et al. [Cornell-Oxford-Tel Aviv-Yeshiva], Strong Coupling Calculations of the Hadron Spectrum of Quantum Chromodynamics, Phys. Rev. D 15, 1111 (1977). S. Raby, S. Dimopoulos and L. Susskind, Tumbling Gauge Theories, Nucl. Phys. B 169, 373-383 (1980). S. Dimopoulos, S. Raby and L. Susskind, Light Composite Fermions, Nucl. Phys. B 173, 208-228 (1980). S. Dimopoulos, S. Raby and G. L.Kane, Experimental Predictions from Technicolor Theories, Nucl. Phys. B 182, 77-103 (1981).

Supersymmetry and Grand Unification S. Dimopoulos and S. Raby, Supercolor, Nucl. Phys. B 192, 353-368 (1981). S. Dimopoulos, S. Raby and F. Wilczek, Supersymmetry and the Scale of Unification, Phys. Rev. D {24, 1681-1683 (1981). W. Fischler, H. P. Nilles, J. Polchinski, S. Raby and L. Susskind, Vanishing Renormalization of the D Term in Supersymmetric U(1) Theories, Phys. Rev. Lett. 47, 757 (1981). S. Dimopoulos, S. Raby and F. Wilczek, Proton Decay in Supersymmetric Model, Phys. Lett. B {112, 133 (1982). S. Dimopoulos and S. Raby, Geometric Hierarchy, Nucl. Phys. B 219, 479 (1983). B. A. Ovrut and S.Raby, The Geometrical Hierarchy Model and $N=1$ Supergravity, Phys. Lett. B 125, 270-274 (1983). V.\ Lucas and S. Raby, GUT scale threshold corrections in a complete supersymmetric SO(10) model: Alpha-s (m(z)) versus proton lifetime, Phys. Rev. D {54, 2261-2272 (1996). S. Raby, M. Ratz and K. Schmidt-Hoberg, Precision gauge unification in the MSSM, Phys. Lett. B 687, 342-348 (2010).

Supersymmetry and Cosmology G. D. Coughlan, W. Fischler, E. W. Kolb, S. Raby and G. G. Ross, Cosmological Problems for the Polonyi Potential, Phys. Lett. B 131, 59-64 (1983). J. S. Hagelin, G. L. Kane and S . Raby, Perhaps Scalar Neutrinos Are the Lightest Supersymmetric Partners, Nucl. Phys. B 241, 638-652 (1984). J. M. Cline and S. Raby, Gravitino induced baryogenesis: A Problem made a virtue, Phys. Rev. D 43, 1781-1787 (1991).

Supersymmetry and Phenomenology J. M. Frere, D. R. T. Jones and S. Raby, Fermion Masses and Induction of the Weak Scale by Supergravity, Nucl. Phys. B 222, 11-19 (1983). L. J. Hall, V. A. Kostelecky and S. Raby, New Flavor Violations in Supergravity Models, Nucl. Phys. B 267, 415-432 (1986). S. Dimopoulos, L. J. Hall and S. Raby, A Predictive framework for fermion masses in supersymmetric theories, Phys. Rev. Lett. 68, 1984-1987 (1992). S. Dimopoulos, L. J. Hall and S. Raby, A Predictive ansatz for fermion mass matrices in supersymmetric grand unified theories, Phys. Rev. D 45, 4192-4200 (1992). T. Blazek, S. Raby and S. Pokorski, Finite supersymmetric threshold corrections to CKM matrix elements in the large tan Beta regime, Phys. Rev. D 52, 4151-4158 (1995). S. Dimopoulos, M. Dine, S. Raby, S. D. Thomas and J. D. Wells, Phenomenological implications of low-energy supersymmetry breaking, Nucl. Phys. B Proc. Suppl. 52, 38-42 (1997). R. Dermisek, A. Mafi and S. Raby, SUSY GUTs under siege: Proton decay, Phys. Rev. D 63, 035001 (2001).

MSSM from the Heterotic String O. Lebedev, H. P. Nilles, S. Raby, S. Ramos-Sanchez, M. Ratz, Low Energy Supersymmetry from the Heterotic Landscape, Phys. Rev. Lett. 98, 181602 (2007). O. Lebedev, H. P. Nilles, S. Raby, S. Ramos-Sanchez, M. Ratz, P. K. S. Vaudrevange and A. Wingerter,A Mini-landscape of exact MSSM spectra in heterotic orbifolds,Phys. Lett. B 645}, 88-94 (2007). T. Kobayashi, H. P. Nilles, F. Ploger, S. Raby and M. Ratz, Stringy origin of non-Abelian discrete flavor symmetries, Nucl. Phys. B 768, 135-156 (2007). O. Lebedev, H. P. Nilles, S. Raby, S. Ramos-Sanchez, M. Ratz, P. K. S. Vaudrevange and A.~Wingerter, The Heterotic Road to the MSSM with R parity, Phys. Rev. D 77, 046013 (2008). H. M. Lee, S. Raby, M. Ratz, G. G. Ross, R. Schieren, K. Schmidt-Hoberg and P. K. S. Vaudrevange,A unique $\mathbb{Z}_4^R$ symmetry for the MSSM, Phys. Lett. B 694, 491-495 (2011). R. Kappl, B. Petersen, S. Raby, M. Ratz, R. Schieren and P. K. S. Vaudrevange, String-Derived MSSM Vacua with Residual R Symmetries, Nucl. Phys. B 847, 325-349 (2011).

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Worked examples

Example 1 — a first encounter with Stuart Raby

Start with the simplest possible case. Write down what Stuart Raby claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Stuart Raby before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Stuart Raby ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Stuart Raby

In research: Stuart Raby appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Stuart Raby in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Stuart Raby is common in secondary-school and first-year university syllabi. It links to neighbouring topics American physicists, Fellows of the American Physical Society, Humboldt Research Award recipients, so understanding it makes those chapters shorter.
In everyday life: Look for Stuart Raby outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Stuart Raby in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Stuart Raby means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Stuart Raby out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Stuart Raby in simple terms?

Stuart A. Raby is an American physicist and professor at The Ohio State University, known for his work in theoretical physics.

Why does Stuart Raby matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Stuart Raby?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Stuart Raby.