<?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>S0035-001X2015000500008</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Solution of the Schrödinger equation making use of time-dependent constants of motion]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres del Castillo]]></surname>
<given-names><![CDATA[G. F.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Instituto de Ciencias Departamento de Física Matemática]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2015</year>
</pub-date>
<volume>61</volume>
<numero>5</numero>
<fpage>376</fpage>
<lpage>379</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2015000500008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2015000500008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2015000500008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[It is shown that if a complete set of mutually commuting operators is formed by constants of motion, then, up to a factor that only depends on the time, each common eigenfunction of such operators is a solution of the Schrödinger equation. In particular, the operators representing the initial values of the Cartesian coordinates of a particle are constants of motion that commute with each other and from their common eigenfunction one readily obtains the Green function.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se muestra que si un conjunto completo de operadores que conmutan entre sí está formado por constantes de movimiento, entonces, salvo un factor que solo depende del tiempo, cada eigenfunción común de tales operadores es una solución de la ecuación de Schrödinger. En particular, los operadores que representan los valores iniciales de las coordenadas cartesianas de una partícula son constantes de movimiento que conmutan entre sí y de sus eigenfunciones comunes uno obtiene fácilmente la función de Green.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Constants of motion]]></kwd>
<kwd lng="en"><![CDATA[Schrödinger equation]]></kwd>
<kwd lng="en"><![CDATA[Green's functions]]></kwd>
<kwd lng="es"><![CDATA[Constantes de movimiento]]></kwd>
<kwd lng="es"><![CDATA[ecuación de Schrödinger]]></kwd>
<kwd lng="es"><![CDATA[funciones de Green]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>  	    <p align="center"><font face="verdana" size="4">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Solution of the Schr&ouml;dinger equation making use of time&#45;dependent constants of motion</b></font></p>     <p align="center"><font face="verdana" size="4">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>G. F. Torres del Castillo</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>      <p align="justify"><font face="verdana" size="2"><i>Departamento de F&iacute;sica Matem&aacute;tica, Instituto de Ciencias Universidad Aut&oacute;noma de Puebla, 72570 Puebla, Pue., M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>      <p align="justify"><font face="verdana" size="2">Received 18 March 2015.    ]]></body>
<body><![CDATA[<br> Accepted 1 July 2015.</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">It is shown that if a complete set of mutually commuting operators is formed by constants of motion, then, up to a factor that only depends on the time, each common eigenfunction of such operators is a solution of the Schr&ouml;dinger equation. In particular, the operators representing the initial values of the Cartesian coordinates of a particle are constants of motion that commute with each other and from their common eigenfunction one readily obtains the Green function.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Constants of motion; Schr&ouml;dinger equation; Green's functions.</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 muestra que si un conjunto completo de operadores que conmutan entre s&iacute; est&aacute; formado por constantes de movimiento, entonces, salvo un factor que solo depende del tiempo, cada eigenfunci&oacute;n com&uacute;n de tales operadores es una soluci&oacute;n de la ecuaci&oacute;n de Schr&ouml;dinger. En particular, los operadores que representan los valores iniciales de las coordenadas cartesianas de una part&iacute;cula son constantes de movimiento que conmutan entre s&iacute; y de sus eigenfunciones comunes uno obtiene f&aacute;cilmente la funci&oacute;n de Green.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Constantes de movimiento; ecuaci&oacute;n de Schr&ouml;dinger; funciones de Green. </font></p>     <p align="justify"><font face="verdana" size="2">PACS: 03.65.&#45;w</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/v61n5/v61n5a8.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>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. G. F. Torres del Castillo, <i>Rev. Mex. FÃ­s.</i> <b>57</b> (2011) 245.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8451706&pid=S0035-001X201500050000800001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">2. H. J. W. M&uuml;ller&#45;Kirsten, <i>Introduction to Quantum Mechanics</i> (World Scientific, Singapore, 2006).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8451708&pid=S0035-001X201500050000800002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">3. R .P. Feynman and A. R. Hibbs, <i>Quantum Mechanics and Path Integrals</i> (McGraw&#45;Hill, New York, 1965).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8451710&pid=S0035-001X201500050000800003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">4. L. S. Schulman, <i>Techniques and Applications of Path Integration</i> (Wiley, New York, 1981).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8451712&pid=S0035-001X201500050000800004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">5. V. V. Dodonov, I. A. Malkin and V. I. Man'ko, <i>Int. J. Theor. Phys.</i> <b>14</b> (1975) 37.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8451714&pid=S0035-001X201500050000800005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body><back>
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</back>
</article>
