<?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>S0035-001X2004000400008</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Compactification with U(1) magnetic field within Dirac supersymmetry]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Besprosvany]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Física ]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<volume>50</volume>
<numero>4</numero>
<fpage>366</fpage>
<lpage>373</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2004000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2004000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2004000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[We consider Dirac-supersymmetric interactions, which produce CP-conserving separation of positive and negative energy solutions in the Dirac equation in order to investigate an alternative to the Kaluza-Klein mechanism. We review conditions under which separation is possible into free particle and compactified behaviors in different dimensions, with attention to spin degrees of freedom. We show a U(1) constant magnetic field produces such kind of behavior; an explicit treatment is given to the 6-d to 4-d and 4-d to 2-d breaking cases and the spectrum is obtained. A dynamical mass-creation mechanism is suggested from the procedure.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se consideran interacciones supersimétricas de Dirac, las cuales producen la separación de las soluciones de energía positiva y negativa en la ecuación de Dirac que conservan CP, con el objeto de investigar una alternativa para el mecanismo de Kaluza-Klein. Consideramos aquellas condiciones bajo las cuales es posible la separación en partícula libre y comportamientos de compactificación, con atención a grados de libertad de espín. Mostramos que un campo magnético constante produce este tipo de comportamiento; se da un tratamiento explícito a los casos de rompimiento de 6-d a 4-d y 4-d a 2-d y se obtiene el espectro. Este procedimiento sugiere un mecanismo dinámico de creación de masa.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Compactification]]></kwd>
<kwd lng="en"><![CDATA[dimensions]]></kwd>
<kwd lng="en"><![CDATA[gauge]]></kwd>
<kwd lng="en"><![CDATA[Dirac]]></kwd>
<kwd lng="en"><![CDATA[supersymmetry]]></kwd>
<kwd lng="es"><![CDATA[Compactificación]]></kwd>
<kwd lng="es"><![CDATA[dimensiones]]></kwd>
<kwd lng="es"><![CDATA[norma]]></kwd>
<kwd lng="es"><![CDATA[Dirac]]></kwd>
<kwd lng="es"><![CDATA[supersimetría]]></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>Compactification with <i>U</i>(1) magnetic field within Dirac supersymmetry</b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>J. Besprosvany and M. Moreno</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, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apartado Postal 20&#45;364, M&eacute;xico 01000, D. F., 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">Recibido el 6 de junio de 2003;    ]]></body>
<body><![CDATA[<br> 	Aceptado el 1 de octubre de 2003.</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">We consider Dirac&#45;supersymmetric interactions, which produce CP&#45;conserving separation of positive and negative energy solutions in the Dirac equation in order to investigate an alternative to the Kaluza&#45;Klein mechanism. We review conditions under which separation is possible into free particle and compactified behaviors in different dimensions, with attention to spin degrees of freedom. We show a <i>U(1)</i> constant magnetic field produces such kind of behavior; an explicit treatment is given to the <i>6&#45;d</i> to <i>4&#45;d</i> and <i>4&#45;d</i> to <i>2&#45;d</i> breaking cases and the spectrum is obtained. A dynamical mass&#45;creation mechanism is suggested from the procedure.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Compactification; dimensions; gauge; Dirac; supersymmetry.</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 consideran interacciones supersim&eacute;tricas de Dirac, las cuales producen la separaci&oacute;n de las soluciones de energ&iacute;a positiva y negativa en la ecuaci&oacute;n de Dirac que conservan CP, con el objeto de investigar una alternativa para el mecanismo de Kaluza&#45;Klein. Consideramos aquellas condiciones bajo las cuales es posible la separaci&oacute;n en part&iacute;cula libre y comportamientos de compactificaci&oacute;n, con atenci&oacute;n a grados de libertad de esp&iacute;n. Mostramos que un campo magn&eacute;tico constante produce este tipo de comportamiento; se da un tratamiento expl&iacute;cito a los casos de rompimiento de 6<i>&#45;d</i> a 4<i>&#45;d</i> y 4<i>&#45;d</i> a 2<i>&#45;d</i> y se obtiene el espectro. Este procedimiento sugiere un mecanismo din&aacute;mico de creaci&oacute;n de masa.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Descriptores:</b> Compactificaci&oacute;n, dimensiones, norma, Dirac, supersimetr&iacute;a.</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: 04.50.+h; 11.25.Mj; 11.10.Kk</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/v50n4/v50n4a8.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.&nbsp;I. Antoniadis, <i>Phys. Lett B</i> <b>246</b> (1990) 377.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303783&pid=S0035-001X200400040000800001&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.&nbsp;N. Arkani&#45;Hamed, S. Dimopoulos, and G. Dvali, <i>Phys. Lett. B</i> <b>429</b> (1998) 263.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303785&pid=S0035-001X200400040000800002&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.&nbsp;D. Bailin and A. Love, <i>Rep. Prog. Phys.</i> <b>50</b> (1987) 1087.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303787&pid=S0035-001X200400040000800003&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">4.&nbsp;E. Witten, <i>Nucl. Phys. B</i> <b>186</b> (1981) 412.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303789&pid=S0035-001X200400040000800004&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.&nbsp;R.P. Mart&iacute;nez y Romero, M. Moreno, and A. Zentella, <i>Phys. Rev. D</i> <b>43</b> (1991)2036.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303791&pid=S0035-001X200400040000800005&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">6.&nbsp;M. Moreno and A. Zentella, <i>J. Phys A</i> <b>22</b> (1989) L821;    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303793&pid=S0035-001X200400040000800006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --> M. Moreno, R.P. Mart&iacute;nez y Romero, and A. Zentella, <i>Mod. Phys.</i> <i>Lett. A</i> <b>5</b> (1990) 949.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303794&pid=S0035-001X200400040000800007&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">7.&nbsp;J.D. Bjorken and S.D. Drell, <i>Relativistic Quantum Mechanics</i> (Mc Graw&#45;Hill Co., New York, 1964).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303796&pid=S0035-001X200400040000800008&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">8.&nbsp;M. Moreno and R.M. Mendez&#45;Moreno in <i>Advances in Applied Clifford Algebras</i> <b>7</b> (S) (Eds. J. Keller and Z. Oziewicz, M&eacute;xico, 1997).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303798&pid=S0035-001X200400040000800009&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">9.&nbsp;S. Gasiorowicz, <i>Quantum Physics</i> (John Wiley &amp; Sons, New York, 1974).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303800&pid=S0035-001X200400040000800010&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">10. J. Besprosvany, <i>Int. Jour. Theo. Phys.</i> <b>39</b> No. 12 (2000) 2797.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303802&pid=S0035-001X200400040000800011&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">11 . J.J. Sakurai, <i>Advanced Quantum Mechanics</i> (Addison&#45;Wesley, Redwood, 1987) p. 175.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303804&pid=S0035-001X200400040000800012&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">12. A.A. Sokolov and I.M. Ternov, <i>Radiation from Relativistic Electrons</i> (American Institute of Physics, New York, 1986).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8303806&pid=S0035-001X200400040000800013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
<body><![CDATA[ ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Antoniadis]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Lett B]]></source>
<year>1990</year>
<volume>246</volume>
<page-range>377</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arkani-Hamed]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Dimopoulos]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Dvali]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Lett. B]]></source>
<year>1998</year>
<volume>429</volume>
<page-range>263</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bailin]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Love]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rep. Prog. Phys.]]></source>
<year>1987</year>
<volume>50</volume>
<page-range>1087</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Witten]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Nucl. Phys. B]]></source>
<year>1981</year>
<volume>186</volume>
<page-range>412</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez y Romero]]></surname>
<given-names><![CDATA[R.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zentella]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev. D]]></source>
<year>1991</year>
<volume>43</volume>
<page-range>2036</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zentella]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Phys A]]></source>
<year>1989</year>
<volume>22</volume>
<page-range>L821</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez y Romero]]></surname>
<given-names><![CDATA[R.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Zentella]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mod. Phys. Lett. A]]></source>
<year>1990</year>
<volume>5</volume>
<page-range>949</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bjorken]]></surname>
<given-names><![CDATA[J.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Drell]]></surname>
<given-names><![CDATA[S.D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Relativistic Quantum Mechanics]]></source>
<year>1964</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Mc Graw-Hill Co.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendez-Moreno]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Advances in Applied Clifford Algebras]]></source>
<year>1997</year>
<volume>7</volume>
<publisher-loc><![CDATA[México ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B10">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gasiorowicz]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantum Physics]]></source>
<year>1974</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[John Wiley & Sons]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Besprosvany]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Int. Jour. Theo. Phys.]]></source>
<year>2000</year>
<volume>39</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>2797</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sakurai]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Advanced Quantum Mechanics]]></source>
<year>1987</year>
<page-range>175</page-range><publisher-loc><![CDATA[Redwood ]]></publisher-loc>
<publisher-name><![CDATA[Addison-Wesley]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<label>12</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sokolov]]></surname>
<given-names><![CDATA[A.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ternov]]></surname>
<given-names><![CDATA[I.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Radiation from Relativistic Electrons]]></source>
<year>1986</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[American Institute of Physics]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
