Gibbs i la paranoia de la N!

Presentem el càlcul de l'entropia d'un gas ideal clàssic en la col·lectivitat microcanònica, sense necessitat d'introduir cap factor correctiu, fent palès que les partícules han de ser distingibles, en contra del que normalment es diu. El mètode emprat ens permet aclarir alguns dels aspectes que més enterboleixen les discussions entorn de l'anomenada paradoxa de Gibbs

Gibbs i la paranoia de la N!

Presentem el càlcul de l'entropia d'un gas ideal clàssic en la col·lectivitat microcanònica, sense necessitat d'introduir cap factor correctiu, fent palès que les partícules han de ser distingibles, en contra del que normalment es diu. El mètode emprat ens permet aclarir alguns dels aspectes que més enterboleixen les discussions entorn de l'anomenada paradoxa de Gibbs

Regla de la Tercera Órden de Penitencia : que fundó el Seráfico Padre San Francisco ... aprobada por el Señor Papa Nicolao IV ... confirmados por los Papas Inocencio XI y Benedicto XIII ...

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-2010En port.: Dedicada a N. S. P. S. FranciscoFecha de licencias : 1758Port. con orla tip

Shape of crossover between mean-field and asymptotic critical behavior in a three-dimensional Ising lattice

Recent numerical studies of the susceptibility of the three-dimensional Ising model with various interaction ranges have been analyzed with a crossover model based on renormalization-group matching theory. It is shown that the model yields an accurate description of the crossover function for the susceptibility.Comment: 4 pages RevTeX + 3 PostScript figures. Uses epsf.sty and rotate.sty. Final version; accepted for publication in Physics Letters

Effective Critical Exponents for Dimensional Ccrossover and Quantum Systems from an Environmentally Friendly Renormalization Group

Series for the Wilson functions of an ``environmentally friendly'' renormalization group are computed to two loops, for an $O(N)$ vector model, in terms of the ``floating coupling'', and resummed by the Pad\'e method to yield crossover exponents for finite size and quantum systems. The resulting effective exponents obey all scaling laws, including hyperscaling in terms of an effective dimensionality, {d\ef}=4-\gl, which represents the crossover in the leading irrelevant operator, and are in excellent agreement with known results.Comment: 10 pages of Plain Tex, Postscript figures available upon request from [email protected], preprint numbers THU-93/18, DIAS-STP-93-1

Pharmaceutical Companies Host Junior Veterinary Students

Fifty-two junior students, four wives, and three instructors were the guests of Eli-Lily and Company in Indianapolis, Parke-Davis and Co. in Detroit, and the Upjohn Company in Kalamazoo from February 29th through March 6th, 1976. This was the annual pharmaceutical tour for juniors in veterinary medicine during Iowa State\u27s winter quarter break