Richard Lawrence Liboff (December 30, 1931 – March 9, 2014) was an Americanphysicist who authored five books and over 100 other publications in variety of fields, includingplasma physics, planetary physics,cosmology,quantum chaos, and quantum billiards.^[1]

He earned hisPh.D., 1961 fromNew York University. His advisors wereHarold Grad in mathematics (13 moment method) andB. Zumino in physics (TCP theory). During his graduate years, he was a research assistant at theCourant Institute.

After graduation, he stayed on as assistant professor of physics. In 1965, he was appointed associate professor in the College of Engineering atCornell. Later appointments at Cornell included membership in the Center for Applied Mathematics and the Department of Applied & Engineering Physics.Fulbright Program and Solvay Fellowships supported three sabbatical leaves abroad. He was appointed full professor in 1970. His research was supported byAFSOR and ARO. In 1969, he chaired the first International Meeting in Kinetic Theory, sponsored by theNSF and co-chaired by N. Rostoker.

He was adistinguished professor of physics at theUniversity of Central Florida.

He died 9 March 2014 in New York, NY, US.^[2][3]

Among his publications, two works are of particular note:

• With a student (G. K. Schenter) he analytically solved a second order non-linear differential equation. One of the three solutions they gave had physical relevance, as it is a generalizedFermi–Dirac distribution relevant to high-field transport in a semiconductor.^[4]
• An ideal dynamical system was shown to be irreversible.^{[citation needed]}

Richard Liboff is the author of five books, three of which are still available:

• Richard L. Liboff (2003).Primer for Point and Space Groups. Springer.ISBN 0-387-40248-9.
• Richard L. Liboff (2003).Kinetic Theory: Classical, Quantum and Relativistic Descriptions (3rd ed.). Springer.ISBN 0-387-95551-8.
• Richard L. Liboff (2002).Introductory Quantum Mechanics (4th ed.). Addison-Wesley.ISBN 0-8053-8714-5.

An earlier edition of the Kinetic Theory text was translated into Russian and an earlier edition of the Quantum Mechanics text was translated into Korean. The second ed. of the q.m. text has been translated intoPersian.

1."Solution to a New Non-Linear Equation for the Distribution of Charge Carriers in a Semi-conductor", Phys. Rev. B35, 7063 (1986). Co-author with G.K. Schenter.
2."Irreversible Wall Collisions and Thermalization of a Gas of Inert Atoms", Phys. Lett. A 202, 177 (1995).
3."Quantum Chaos for the Radially Vibrating Spherical Billiard", Chaos 10, 366 (2000). Co-author withMason Porter.
4."Quantum Billiard Chaos", Phys. Letters A265,230 (2000).
5. "Excess Radiation from the Large Planets." Astronomical J, 134, (2007)

InSpider-Man 2,Peter Parker (played byTobey Maguire) is seen dropping some of his books at Columbia University. Among the books is the Fourth Edition of Liboff's Introductory Quantum Mechanics.^[5]

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