Polyelectrolyte Solutions with Multivalent Salts

We investigate the thermodynamic properties of a polyelectrolyte solution in a presence of {\it multivalent} salts. The polyions are modeled as rigid cylinders with the charge distributed uniformly along the major axis. The solution, besides the polyions, contain monovalent and divalent counterions as well as monovalent coions. The strong electrostatic attraction existing between the polyions and the counterions results in formation of clusters consisting of one polyion and a number of associated monovalent and divalent counterions. The theory presented in the paper allows us to explicitly construct the Helmholtz free energy of a polyelectrolyte solution. The characteristic cluster size, as well as any other thermodynamic property can then be determined by an appropriate operation on the free energy

A violation of the factorization theorem for "hard" inclusive production

This talk is a digest of Ref.[1](E.Gotsman,E. Levin and U. Maor: TAUP 2416/97, hep-ph/9705205,Phys. Lett. (in press)) where a new mechanism for hard inclusive production, which leads to a violation of the factorization theorem (FT), is suggested. Numericalestimates for the effect are given for high energy hadron (nucleus) scattering.Comment: Talk at DIS97,latex file, two eps files for picture

Gluon saturation and inclusive production at low transverse momenta

In this letter we suggest the generalization of $k_T$-factorization formula for inclusive gluon production for the dense-dense parton system scattering. It turnes out that the soft gluon production with transverse momentum $p_T$ is suppressed by additional Sudakov-like factor that depends on $p^2_T/Q^2_s$ ratio in a good agreement with the first numerical calculation in Colour Glass Condensate approach by J.P. Blaizot, T. Lappi and Y. Mehtar-Tan.Comment: 6 pp. 3 figures in eps file

G-valued crystalline representations with minuscule p-adic Hodge type

We study G-valued semi-stable Galois deformation rings where G is a reductive group. We develop a theory of Kisin modules with G-structure and use this to identify the connected components of crystalline deformation rings of minuscule p-adic Hodge type with the connected components of moduli of "finite flat models with G-structure." The main ingredients are a construction in integral p-adic Hodge theory using Liu's theory of $(\varphi, \widehat{G})$-modules and the local models constructed by Pappas and Zhu

Book review: breakout nations: in pursuit of the nextEconomic miracles

The argument of Breakout Nations is that the astonishingly rapid growth over the last decade of the world’s celebrated emerging markets is coming to an end. The era of easy money and easy growth is over. China, in particular, will soon slow, but its place will not necessarily be taken by Brazil, Russia or India, all of which Ruchir Sharma shows have weaknesses and difficulties often overlooked in the inflated expectations and emerging markets mania of the past decade. Scott Levin hopes that Sharma is putting his money where his mouth is, because many readers certainly will be