<?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>S0035-001X2007001000012</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Inflation scenario from canonical quantum cosmology]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sabido]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Socorro]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ureña-López]]></surname>
<given-names><![CDATA[L. Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de Guanajuato Instituto de Física ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2007</year>
</pub-date>
<volume>53</volume>
<fpage>56</fpage>
<lpage>60</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2007001000012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2007001000012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2007001000012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Using the canonical quantization for the flat FRW cosmological model with scalar field and scalar potential V(Ø), we obtain a differential equation for this potential. Also we present the quantum solution for this model, and under the WKB approximation to get the semiclassical formulation, we give a family of potentials. Finally, the classical evolution of the system is given in the inflation scenary.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Usando la cuantización canónica para el modelo cosmológico del FRW plano, con campo escalar y potencial escalar V(Ø), obtenemos una ecuación diferencial para éste potencial. También presentamos la solución cuántica para este modelo, y bajo la aproximación semi-clásica WKB, damos una familia de potenciales. Finalmente, la evolución clásica del sistema es dada en el escenario de inflación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Exact solutions]]></kwd>
<kwd lng="en"><![CDATA[quantum cosmology]]></kwd>
<kwd lng="es"><![CDATA[Soluciones exactas]]></kwd>
<kwd lng="es"><![CDATA[cosmología cuántica]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Inflation scenario from canonical quantum cosmology</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>W. Guzm&aacute;n, M. Sabido, J. Socorro, and L. Arturo Ure&ntilde;a&#150;L&oacute;pez</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Instituto de F&iacute;sica de la Universidad de Guanajuato, Apartado Postal E&#150;143, 37150, Le&oacute;n, Guanajuato, M&eacute;xico, e&#150;mail: <a href="mailto:wguzman@fisica.ugto.mx" target="_blank">wguzman@fisica.ugto.mx</a>, <a href="mailto:msabido@fisica.ugto.mx" target="_blank">msabido@fisica.ugto.mx</a>, <a href="mailto:socorro@fisica.ugto.mx" target="_blank">socorro@fisica.ugto.mx</a>, <a href="mailto:lurena@fisica.ugto.mx" target="_blank">lurena@fisica.ugto.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 1 de mayo de 2006    <br>   Aceptado el 1 de noviembre de 2006</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>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Using the canonical quantization for the flat FRW cosmological model with scalar field and scalar potential V(&Oslash;), we obtain a differential equation for this potential. Also we present the quantum solution for this model, and under the WKB approximation to get the semiclassical formulation, we give a family of potentials. Finally, the classical evolution of the system is given in the inflation scenary.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Exact solutions; quantum cosmology.</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">Usando la cuantizaci&oacute;n can&oacute;nica para el modelo cosmol&oacute;gico del FRW plano, con campo escalar y potencial escalar V(&Oslash;), obtenemos una ecuaci&oacute;n diferencial para &eacute;ste potencial. Tambi&eacute;n presentamos la soluci&oacute;n cu&aacute;ntica para este modelo, y bajo la aproximaci&oacute;n semi&#150;cl&aacute;sica WKB, damos una familia de potenciales. Finalmente, la evoluci&oacute;n cl&aacute;sica del sistema es dada en el escenario de inflaci&oacute;n.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Soluciones exactas; cosmolog&iacute;a cu&aacute;ntica.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 02.30.Jr; 04.20.Jb; 04.60.Ds; 04.60.Kz; 98.80.Jk; 98.80.Qc</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v53s4/v53s4a12.pdf">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></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>Acknowledgments</b></font></p>     <p align="justify"><font face="verdana" size="2">This work was partially supported by CONACYT grants 42748, 46195 and 47641, also PROMEP grants UGTO&#150;CA&#150;3 and UGTO&#150;PTC&#150;085, CONCYTEG grant 05&#150;16&#150;K117&#150;032, DINPO 000085/05</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. B. Ratra and P.J.E. Peebles, <i>Phys. Rev. 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