1,386 research outputs found
The nuclear configurational entropy impact parameter dependence in the Color-Glass Condensate
The impact parameter (b) dependence on the saturation scale, in the framework
of the Color Glass Condensate (b-CGC) dipole model, is investigated from the
configurational point of view. During the calculations and analysis of the
quantum nuclear states, the critical points of stability in the configurational
entropy setup are computed, matching the experimental parameters that define
the onset of the quantum regime in the b-CGC in the literature with very good
accuracy. This new approach is crucial and important for understanding the
stability of quantum systems in study of deep inelastic scattering processes.Comment: 5 pages, 2 figs, published versio
Fine-tuning the Color-Glass Condensate with the nuclear configurational entropy
The dipole-nucleus forward scattering amplitude rules the onset of the gluon
anomalous dimension, in the Color-Glass Condensate regime. In this model, the
onset of quantum regime is here derived as a critical stable point in the
nuclear configurational entropy, matching the fitted experimental data in the
literature with accuracy of 1%. It corroborates with the informational entropy
paradigm in high energy nuclear physics.Comment: 4 pages, 1 figure, EPL style, matches the published versio
Configurational entropy and and mesons production in QCD
In the present work the electroproduction for diffractive and
mesons by considering AdS/QCD correspondence and Color Glass Condensate (CGC)
approximation are studied with respect to the associated dipole cross section,
whose parameters are studied and analysed in the framework of the
configurational entropy. Our results suggest different quantum states of the
nuclear matter, showing that the extremal points of the nuclear configurational
entropy is able to reflect a true description of the and mesons
production, using current data concerning light quark masses. During the
computations parameters, obtained in fitting procedure, coincide to the
experimental within 0.1 %.Comment: 5 pages, 2 figure
An Efficient Hybrid Ant Colony System for the Generalized Traveling Salesman Problem
The Generalized Traveling Salesman Problem (GTSP) is an extension of the
well-known Traveling Salesman Problem (TSP), where the node set is partitioned
into clusters, and the objective is to find the shortest cycle visiting each
cluster exactly once. In this paper, we present a new hybrid Ant Colony System
(ACS) algorithm for the symmetric GTSP. The proposed algorithm is a
modification of a simple ACS for the TSP improved by an efficient GTSP-specific
local search procedure. Our extensive computational experiments show that the
use of the local search procedure dramatically improves the performance of the
ACS algorithm, making it one of the most successful GTSP metaheuristics to
date.Comment: 7 page
A Memetic Algorithm for the Generalized Traveling Salesman Problem
The generalized traveling salesman problem (GTSP) is an extension of the
well-known traveling salesman problem. In GTSP, we are given a partition of
cities into groups and we are required to find a minimum length tour that
includes exactly one city from each group. The recent studies on this subject
consider different variations of a memetic algorithm approach to the GTSP. The
aim of this paper is to present a new memetic algorithm for GTSP with a
powerful local search procedure. The experiments show that the proposed
algorithm clearly outperforms all of the known heuristics with respect to both
solution quality and running time. While the other memetic algorithms were
designed only for the symmetric GTSP, our algorithm can solve both symmetric
and asymmetric instances.Comment: 15 pages, to appear in Natural Computing, Springer, available online:
http://www.springerlink.com/content/5v4568l492272865/?p=e1779dd02e4d4cbfa49d0d27b19b929f&pi=1
Mental Accounting in the Housing Market
We use a survey to identify a consumer bias with regard to different sources of debt-financing. Less salient debt may generate psychological benefits. This should be weighed against the possible economic costs of a sub-optimal capital structure; but low levels of financial literacy make it unlikely that all households perceive the full economic costs. As a result there is a bias in favour of less salient debt. In a market with limited scope for arbitrage this consumer bias is likely to generate inefficiencies. We examine such a market in both theory and practice. The predictions of our model are given strong support by market data.Household Finance; Mental Accounting; Co-op; Capital Structure
Mental Accounting in the Housing Market
We report evidence that salience may have economically significant effects on homeowners' borrowing behavior, through a bias in favour of less salient but more costly loans. We outline a simple model in which some consumers are biased. Under plausible assumptions, the bias may affect prices in equilibrium. Market data support the predictions of the model.salience; housing market; household finance; co-op; capital structure
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