Disorder in the 1D spinless Holstein model. Abstract: We investigate a spinless fermion system on a one dimensional lattice interacting locally with the optical modes of a quantized phonon field: the Holstein model. The system is shown to have a disordered ground state, for small enough coupling, at any density. This is in contrast to the non quantized phonon case, the static Holstein model, wh...

Y. Fernandez-jalvoa,., T, Kingb, P, Andrews c, L. Yepiskoposyan d,e, N, Moloneya,b, j, Murrayf, P, Dominguez-Alonso g, L. Asryan h, P, Ditchfield i, ]. van der Made a, T, Torresj, P, Sevilla g, M, Nieto Diaz a,k, I. Caceres', E, Allue', M,D, Marin Monfort a, 1. Sanz Martin a a Museo Nacional de Ciencias Naturales (CSIC),jose Gutierrez Abascal, 2. 28006 Madrid, Spain h Institute of MaIL 25 Davit...

This study aims at exploring ink spreading, which causes significant colour deviations in ink-jet printing. We present a method for investigating this phenomenon by considering only a limited number of cases. Using a combinatorial approach based on Pólya’s counting theory, we determine a small set of ink drop configurations which allows to deduce the ink spreading in all other cases. This impro...

[Abstract] Is tax evasion beneficial or harmful to growth? We approach this question by extending Persson and Tabellini’s (1994) growth model to a plausible world where individuals differ not only in terms of their skill in earning income but also in terms of their skill in concealing income from the tax authority. The Persson-Tabellini model identifies a fundamental tradeoff for redistribution...

A new species of the genus Paravillersia Kuznetsov, 1978 (Acari: Stigmaeidae), P. jamaliensis Khaustov sp. nov. is described from mosses on fen in Western Siberia, Russia. The supplementary description of Paravillersia grata Kuznetsov, 1978 is provided based on the type material. 

We report the kinetic study of the substitution reaction of a cationic platinum(II) complex [Pt(dpma)Cl](+) (dpma identical with di(2-picolyl)amine) with thioacetate in room temperature ionic liquids {[C(4)C(1)im][NTf(2)], [C(4)C(1)py][NTf(2)], [C(4)C(1)py][OTf] and [(C(3)O)C(1)im][NTf(2)]} and molecular solvents (water, methanol and DMSO). The reaction was studied as a function of the nucleoph...

Hyungjun Im, M.D., Jeong Don Chae, M.D., Minseok Yoo, M.D., So-Young Lee, M.D., Eun Ju Song, M.D., Su-Ah Sung, M.D., Young Hwan Hwang, M.D., Jeong Hwan Shin, M.D., and Young-Uk Cho, M.D. Departments of Rehabilitation Medicine, Laboratory Medicine, and Internal Medicine, Division of Nephrology, Eulji General Hospital, College of Medicine, Eulji University, Seoul; Department of Laboratory Medicin...

We consider insurance markets with adverse selection and propose a mechanism under which a separating Nash equilibrium always exists (even when a Rothschild-Stiglizt equilibrium does not). This equilibrium is unique and always (interim) incentive efficient. In our setting, the Rothschild-Stiglizt equilibrium exists and coincides with ours only if the former is incentive efficient. Otherwise, ou...

single crystals Xiaohang Zhang, Shanta R. Saha, Nicholas P. Butch, Kevin Kirshenbaum, Johnpierre Paglione, Richard L. Greene, Yong Liu, Liqin Yan, Yoon Seok Oh, Kee Hoon Kim, and Ichiro Takeuchi Department of Physics and CNAM, University of Maryland, College Park, Maryland 20742, USA Department of Physics and Astronomy, CSCMR & FPRD, Seoul National University, Seoul 151-747, Republic of Korea D...

“Scrap Your Boilerplate” (SYB) is an established style of generic functional programming. The present paper reconstructs SYB within the Prolog language with the help of the univ operator and higher-order logic programming techniques. We pay attention to the particularities of Prolog. For instance, we deal with traversal of non-ground terms. We also develop an alternative model of SYB-like trave...