<?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>S0035-001X2013000500012</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Operator folding and matrix product states in linearly-coupled bosonic arrays]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reslen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad del Atlántico Coordinación de Física ]]></institution>
<addr-line><![CDATA[Barranquilla ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2013</year>
</pub-date>
<volume>59</volume>
<numero>5</numero>
<fpage>482</fpage>
<lpage>487</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2013000500012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2013000500012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2013000500012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[A protocol to obtain the matrix product state representation of a class of boson states is introduced. The proposal is presented in the context of linear systems and is tested by performing simulations of a reference model. The method can be applied regardless of the details of the coupling among modes and can be used to extract the most significant contribution of the tensorial representation. Characteristic issues as well as potential variants ofthe proposed protocol are discussed.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se introduce una técnica para obtener la representación en términos de productos de matrices de una clase de estados bosónicos. La técnica se presenta en el contexto de sistemas lineales y se verifica realizando simulaciones de un sistema conocido. Este método se puede aplicar independientemente del tipo de acoplamiento entre modos y se puede usar para extraer la parte más significativa de la representación tensorial del estado. Se discuten tanto las características más importantes como las posibles extensiones de la propuesta.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Quantum simulations]]></kwd>
<kwd lng="en"><![CDATA[bosonic systems]]></kwd>
<kwd lng="en"><![CDATA[entanglement]]></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>Operator folding and matrix product states in linearly&#45;coupled bosonic arrays</b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>J. Reslen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><i>Coordinaci&oacute;n de F&iacute;sica, Universidad del Atl&aacute;ntico, Km. 7 Antigua v&iacute;a a Puerto Colombia, A.A. 1890, Barranquilla, Colombia.</i></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Received 29 April 2013    ]]></body>
<body><![CDATA[<br> 	Accepted 12 June 2013</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">A protocol to obtain the matrix product state representation of a class of boson states is introduced. The proposal is presented in the context of linear systems and is tested by performing simulations of a reference model. The method can be applied regardless of the details of the coupling among modes and can be used to extract the most significant contribution of the tensorial representation. Characteristic issues as well as potential variants ofthe proposed protocol are discussed.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Quantum simulations; bosonic systems; entanglement.</font></p> 	    <p align="justify">&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2">PACS: 03.67.Ac; 05.30.Jp; 03.65.Ud</font></p>  	    <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">Se introduce una t&eacute;cnica para obtener la representaci&oacute;n en t&eacute;rminos de productos de matrices de una clase de estados bos&oacute;nicos. La t&eacute;cnica se presenta en el contexto de sistemas lineales y se verifica realizando simulaciones de un sistema conocido. Este m&eacute;todo se puede aplicar independientemente del tipo de acoplamiento entre modos y se puede usar para extraer la parte m&aacute;s significativa de la representaci&oacute;n tensorial del estado. Se discuten tanto las caracter&iacute;sticas m&aacute;s importantes como las posibles extensiones de la propuesta.</font></p>  	    ]]></body>
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