Michael Cohen
 Prof. Emeritus
 Postdoctoral positions al CalTech and the Institute for Advanced Study (Princeton)
Honors include:
Honorary Trustee (cofounder), Aspen Center for Physics
Fellow, American Physical Society
Ph.D., CalTech (1956)
B.A. Cornell (1951)
Condensed Matter Physics
I have investigated the quantum mechanics of liquid helium, calculating properties of the bulk fluid as well as the surface (density profile and surface excitations).
I am interested in applying statistical mechanics to the analysis of simple models of realworld systems. An analysis of a simple model of displacive ferroelectrics led to an interesting phase diagram and an understanding of mode softening as the precursor of a displacive transition. With a biologicallyoriented coworker, I have studied the equilibrium between a membrane (wilh sites which can adsorb molecules) and a fluid containing those molecules. We have studied fairly complicated membranes, taking account of the geometrical competition for sites and also including electrostalic effecls in a meanfield approximation.
In September 2011 I completed an elementary text, or supplementary text, on Classical Mechanics. The book incorporates my ideas on how to present the basic concepts, and is available (free) online. (See link above).
 (with T.J. Einstein), "Statistical Mechanics of a Simple Model of a Displacive Ferroelectric," Phys. Rev. B, 7, 1932 (1973).
 (with C.C. Chang), "Microscopic Theory of Surface Excitations in Superfluid Helium," Phys. Rev. B 11, 1059 (1975).
 (with J.A. Cohen), "Adsorption of Monovalent and Divalent Cations by Phospholipid Membranes: the MonomerDimer Problem," Biophys. Journal 36, 623 (1981).
 (with A.B. Harris), "Scaling of Negative Moments of the Growth Probability of Diffusion Limited Aggregates" , Phys. Rev. A41, 971 (1990)
 (with A.B.Harris), "Multiple Species of Noninteracting Molecules Adsorbed on a Bethe Lattice", Phys.Rev.E78, 041116 (2008)
 "Classical Mechanics: a Critical Introduction" online 2011 (see link above)
Events

High Energy Seminar: "Entanglement, Gravity, and Quantum Error Correction"
December 12, 2016  2:00 pm
Xi Dong (IAS)
David Rittenhouse Laboratory, 2N36

Experimental Particle Physics: "TBA"
December 13, 2016  1:30 pm
Alessandro Tricoli (Brookhaven National Laboratory)
David Rittenhouse Laboratory, 4C8

Department of Physics and Astronomy: Postponed Exams
January 17, 2017  6:00 pm
TBA