121,572 research outputs found
Some examples of Mahler measures as multiple polylogarithms
The Mahler measures of certain polynomials of up to five variables are given
in terms of multiple polylogarithms. Each formula is homogeneous and its weight
coincides with the number of variables of the corresponding polynomial.Comment: 21 pages, 1 figur
Mahler measure of some n-variable polynomial families
The Mahler measures of some n-variable polynomial families are given in terms
of special values of the Riemann zeta function and a Dirichlet L-series,
generalizing the results of \cite{L}. The technique introduced in this work
also motivates certain identities among Bernoulli numbers and symmetric
functions
Tempered Fermions in the Hybrid Monte Carlo Algorithm
Parallel tempering simulates at many quark masses simultaneously, by changing
the mass during the simulation while remaining in equilibrium. The algorithm is
faster than pure HMC if more than one mass is needed, and works better the
smaller the smallest mass is.Comment: 4 pages, 2 figures, Combined proceedings for Lattice 97, Edinburgh
and the International Workshop 'Lattice QCD on Parallel Computers',
University of Tsukuba, Japa
Remarks on Form Factor Bounds
Improved model independent upper bounds on the weak transition form factors
are derived using inclusive sum rules. Comparison of the new bounds with the
old ones is made for the form factors h_{A_1} and h_V in B -> D* decays.Comment: 8 pages, 2 figures, title changed and typos corrected for journal
publicatio
Giving New Functions to Old Forms: The Aesthetics of Reassigned Architecture
In modern cities, many old or abandoned buildings occupy valuable land without providing a comparably valuable service. In the past they have often met with the fate of being demolished and replaced, but modern day sentiment, be it foolhardy nostalgia or legitimate concern for architectural heritage, often leads to a buildingâs refurbishment. As a result, buildings save themselves from the wrecking ball by providing a service that satiates modern day demand
Ales Debeljak\u27s \u3cem\u3eAnxious Moments\u3c/em\u3e and Imre Oravecz\u27s \u3cem\u3eWhen You Became She\u3c/em\u3e
Why Youth (heart) Social Network Sites: The Role of Networked Publics in Teenage Social Life
Part of the Volume on Youth, Identity, and Digital Media Social network sites like MySpace and Facebook serve as "networked publics." As with unmediated publics like parks and malls, youth use networked publics to gather, socialize with their peers, and make sense of and help build the culture around them. This article examines American youth engagement in networked publics and considers how properties unique to such mediated environments (e.g., persistence, searchability, replicability, and invisible audiences) affect the ways in which youth interact with one another. Ethnographic data is used to analyze how youth recognize these structural properties and find innovative ways of making these systems serve their purposes. Issues like privacy and impression management are explored through the practices of teens and youth participation in social network sites is situated in a historical discussion of youth's freedom and mobility in the United States
- âŠ