<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2008000500003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Frustración local en la red arquimediana (3,4,6,4)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lebrecht]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés]]></surname>
<given-names><![CDATA[J.F.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de La Frontera Departamento de Física ]]></institution>
<addr-line><![CDATA[Temuco ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2008</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2008</year>
</pub-date>
<volume>54</volume>
<numero>5</numero>
<fpage>349</fpage>
<lpage>357</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2008000500003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2008000500003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2008000500003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Mediante un modelo de Ising con interacciones mixtas ± J a primeros vecinos y a temperatura nula, se describe el comportamiento de parámetros físicos y topológicos del nivel fundamental asociado a la red (3,4,6,4) en notación de Grünbaum y Shephard (NL por simplicidad). Se utilizan para ello, dos descripciones canónicas determinadas por distribuciones de probabilidad <img border=0 width=14 height=22 src="/img/revistas/rmf/v54n5/a3s1.jpg">y <img border=0 width=17 height=22 src="/img/revistas/rmf/v54n5/a3s2.jpg">que son establecidas a través de un análisis local de frustración sobre una celda representativa de la red. Los resultados obtenidos para la energía promedio por enlace, el segmento promedio de frustración y la fracción de enlaces no frustrados en ambas descripciones, se comparan con simulaciones numéricas basadas en el método de multirréplicas de descenso rápido sobre un conjunto de 10000 muestras generadas aleatoriamente, incluyendo condiciones periódicas de borde. Se encuentra un buen acuerdo entre los resultados analíticos y numéricos, especialmente en las fases antiferromagnética y vidrio de espín.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[By means of Ising model with mixed interactions ± J to nearest neighbors and null temperature, is described the behavior of physical and topological parameters of the fundamental level associated to (3,4,6,4) lattices in notation of Grünbaum and Shephard, NL for simplicity. It is used for it, two canonical descriptions determined by distributions of probabilities <img border=0 width=14 height=22 src="/img/revistas/rmf/v54n5/a3s1.jpg">and <img border=0 width=17 height=22 src="/img/revistas/rmf/v54n5/a3s2.jpg">that they are established through a local analysis of frustration on a representative cell of the lattice. The results obtained for average energy per bond, average frustration segment and fraction of unfrustrated bonds in both descriptions are compared with numerical simulations based on method of multireplieas of quick descent over a set of 10000 samples randomly generated including periodic boundary conditions. It observes a good agreement between analytical and numerical results, especially at antiferromagnetic and spin glass phases.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Frustración]]></kwd>
<kwd lng="es"><![CDATA[red diluida]]></kwd>
<kwd lng="es"><![CDATA[modelo de Ising]]></kwd>
<kwd lng="en"><![CDATA[Frustration]]></kwd>
<kwd lng="en"><![CDATA[diluted lattices]]></kwd>
<kwd lng="en"><![CDATA[Ising model]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Frustraci&oacute;n local en la red arquimediana (3,4,6,4)</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>W. Lebrecht y J.F. Vald&eacute;s</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Departamento de F&iacute;sica, Universidad de La Frontera, Casilla 54&#150;D, Temuco, Chile, </i>e&#150;mail: <a href="mailto:lebrecht@ufro.cl">lebrecht@ufro.cl</a>, <a href="mailto:jvaldes@ufro.cl">jvaldes@ufro.cl</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 30 de julio de 2007    <br> Aceptado el 29 de agosto de 2008</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Mediante un modelo de Ising con interacciones mixtas &plusmn; <i>J</i> a primeros vecinos y a temperatura nula, se describe el comportamiento de par&aacute;metros f&iacute;sicos y topol&oacute;gicos del nivel fundamental asociado a la red (3,4,6,4) en notaci&oacute;n de Gr&uuml;nbaum y Shephard (NL por simplicidad). Se utilizan para ello, dos descripciones can&oacute;nicas determinadas por distribuciones de probabilidad <img src="/img/revistas/rmf/v54n5/a3s1.jpg">y <img src="/img/revistas/rmf/v54n5/a3s2.jpg">que son establecidas a trav&eacute;s de un an&aacute;lisis local de frustraci&oacute;n sobre una celda representativa de la red. Los resultados obtenidos para la energ&iacute;a promedio por enlace, el segmento promedio de frustraci&oacute;n y la fracci&oacute;n de enlaces no frustrados en ambas descripciones, se comparan con simulaciones num&eacute;ricas basadas en el m&eacute;todo de multirr&eacute;plicas de descenso r&aacute;pido sobre un conjunto de 10000 muestras generadas aleatoriamente, incluyendo condiciones peri&oacute;dicas de borde. Se encuentra un buen acuerdo entre los resultados anal&iacute;ticos y num&eacute;ricos, especialmente en las fases antiferromagn&eacute;tica y vidrio de esp&iacute;n.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Frustraci&oacute;n; red diluida; modelo de Ising.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">By means of Ising model with mixed interactions &plusmn; <i>J</i> to nearest neighbors and null temperature, is described the behavior of physical and topological parameters of the fundamental level associated to (3,4,6,4) lattices in notation of Gr&uuml;nbaum and Shephard, NL for simplicity. It is used for it, two canonical descriptions determined by distributions of probabilities <img src="/img/revistas/rmf/v54n5/a3s1.jpg">and <img src="/img/revistas/rmf/v54n5/a3s2.jpg">that they are established through a local analysis of frustration on a representative cell of the lattice. The results obtained for average energy per bond, average frustration segment and fraction of unfrustrated bonds in both descriptions are compared with numerical simulations based on method of multireplieas of quick descent over a set of 10000 samples randomly generated including periodic boundary conditions. It observes a good agreement between analytical and numerical results, especially at antiferromagnetic and spin glass phases.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Frustration; diluted lattices; Ising model.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 05.50.+q; 75.10.Hk</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v54n5/v54n5a3.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>     <p align="justify"><font face="verdana" size="2">Los autores agradecen a la Universidad de la Frontera a trav&eacute;s del proyecto DIDUFRO DI 07&#150;0060 por el apoyo parcial en el desarrollo de este trabajo.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. B. Gr&uuml;nbaum y G.C. Shephard, <i>Tilings and Patterns, </i>(W.H. 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