<?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>S0035-001X2006000700002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Transient phenomena in quantum mechanics]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Godoy]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kramer]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moshinsky]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Física ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,University of Munich Physics Department ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,El Colegio Nacional Sistema Nacional de Investigadores ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>01</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>01</month>
<year>2006</year>
</pub-date>
<volume>52</volume>
<fpage>1</fpage>
<lpage>4</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2006000700002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2006000700002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2006000700002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Transient phenomena in quantum mechanics imply solving the time dependent Schrodinger equation with appropriate initial and boundary conditions. In this paper we consider the general formulation of the one dimensional problem and apply it to the particular example of transient phenomena for the bound state of a delta potential perturbed by the action of a boundary condition.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Fenómenos transitorios en mecánica cuántica implican resolver la ecuación de Schrodinger dependiente del tiempo con condiciones iniciales y de frontera. En este trabajo consideramos la formulación general del problema unidimensional y la aplicamos al ejemplo particular del fenómeno transitorio para el estado ligado de un potencial delta, perturbado por la acción de una condición a la frontera.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Transient phenomena]]></kwd>
<kwd lng="es"><![CDATA[Fenómenos transitorios]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Transient phenomena in quantum mechanics</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>S. Godoy<sup>a</sup>, T. Kramer<sup>b</sup>, and M. Moshinsky<sup>c</sup></b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Instituto de F&iacute;sica, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apartado Postal 20&#150;364, 01000 M&eacute;xico D.F., M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>a </sup>Facultad de Ciencias, UNAM.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>b </sup>Permanent Address, Physics Department at the University of Munich in Garching.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>c</sup> Member of El Colegio Nacional and Sistema Nacional de Investigadores.</i></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 enero de 2005    ]]></body>
<body><![CDATA[<br>   Aceptado el 15 de marzo de 2005</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">Transient phenomena in quantum mechanics imply solving the time dependent Schrodinger equation with appropriate initial and boundary conditions. In this paper we consider the general formulation of the one dimensional problem and apply it to the particular example of transient phenomena for the bound state of a delta potential perturbed by the action of a boundary condition.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Transient phenomena.</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">Fen&oacute;menos transitorios en mec&aacute;nica cu&aacute;ntica implican resolver la ecuaci&oacute;n de Schrodinger dependiente del tiempo con condiciones iniciales y de frontera. En este trabajo consideramos la formulaci&oacute;n general del problema unidimensional y la aplicamos al ejemplo particular del fen&oacute;meno transitorio para el estado ligado de un potencial delta, perturbado por la acci&oacute;n de una condici&oacute;n a la frontera.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Fen&oacute;menos transitorios. </font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS:  02.30.Ok; 0.365.Ge</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/v52s1/v52s1a2.pdf">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>Acknowledgments</b></font></p>     <p align="justify"><font face="verdana" size="2">The authors would like to thank CONACYT Project 40527&#150;F for support of this research.</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. W. Greiner,  <i>Quantum Mechanics, </i>(Springer&#150;Verlag, Berlin, 1994), pag. 115.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8322948&pid=S0035-001X200600070000200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2. P. Dennery and A. Krzywicki, <i>Mathematics for Physicist, </i>(Harper and Row, New York 1967), pag 84, Eq. (29.5).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8322949&pid=S0035-001X200600070000200002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">3. M. Moshinsky, <i>Phys. Rev. </i><b>88</b>, 625 (1952).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8322950&pid=S0035-001X200600070000200003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> ]]></body><back>
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