{"id":54278,"date":"2018-03-09T22:42:00","date_gmt":"2018-03-09T22:42:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/una-vision-critica-sobre-la-descompactificacion-en-gases-de-cuerdas\/"},"modified":"2018-03-09T22:42:00","modified_gmt":"2018-03-09T22:42:00","slug":"una-vision-critica-sobre-la-descompactificacion-en-gases-de-cuerdas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/una-vision-critica-sobre-la-descompactificacion-en-gases-de-cuerdas\/","title":{"rendered":"Una vision critica sobre la descompactificacion en gases de cuerdas"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Cobas  Alonso Manuel Angel <\/strong><\/h2>\n<p>Se aborda el estudio de algunos aspectos relativos al problema de hagedorn en teor\u00eda de cuerdas a nivel perturbativo. El fen\u00f3meno de hagedorn es un viejo y conocido problema relacionado con el crecimiento exponencial de la densidad de estados de la cuerda. Este comportamiento general se concreta de manera diferente dependiendo de la teor\u00eda considerada, cuerdas abiertas, cerradas, cuerdas en espacios abiertos o compactos&#8230;, Generando un gas de objetos, peculiar y diferenciado en cada caso.  en una primera parte de la tesis, se retoma el estudio general del gas de cuerdas libres en el com\u00fanmente denominado colectivo microcan\u00f3nico, realmente ent\u00e1lpico, en el r\u00e9gimen de hagedorn. Se obtienen resultados ya conocidos a trav\u00e9s de un desarrollo preciso y detallado, poniendo especial \u00e9nfasis en el papel del potencial qu\u00edmico y su implicaci\u00f3n en el n\u00famero medio de objetos presentes en el gas. Se corrigen y aclaran algunos errores existentes en la literatura al respecto, especialmente aquellos relativos a la aproximaci\u00f3n de maxwell-boltzmann. Aplicamos estos conceptos al estudio del gas de cuerdas bos\u00f3nicas, libres, en dimensiones abiertas. El estudio macrocan\u00f3nico de este sistema produce una energia libre convergente cuando la temperatura es menor o igual que la de hagedorn, y divergente para temperaturas superiores. Abordando el problema desde el microcan\u00f3nico se obtiene una entrop\u00eda que contiene t\u00e9rminos no extensivos. Se discute la presencia de estos t\u00e9rminos y sus implicaciones f\u00edsicas. Esta primera parte est\u00e1 basada en resultados publicados.  en una segunda parte de la tesis se lleva a cabo una revisi\u00f3n cr\u00edtica del proceso de descompactificaci\u00f3n (apertura de dimensiones) para el gas de cuerdas cerradas, seg\u00fan aparece en otro art\u00edculo publicado.  Partiendo de una situaci\u00f3n en la que todas las dimensiones espaciales est\u00e1n compactificadas en c\u00edrculos de radio autodual, se estudia el efecto de aumentar el valor del<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Una vision critica sobre la descompactificacion en gases de cuerdas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Una vision critica sobre la descompactificacion en gases de cuerdas <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Cobas  Alonso Manuel Angel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 21\/07\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Miguel Angel Ramos Osorio<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan  Luis Ma\u00f1es palacios <\/li>\n<li>Jos\u00e9 Luis Fernandez barbon (vocal)<\/li>\n<li> Vazquez mozo Miguel angel (vocal)<\/li>\n<li>tomas Ortin Miguel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cobas Alonso Manuel Angel Se aborda el estudio de algunos aspectos relativos al problema de hagedorn en [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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