{"id":69184,"date":"2004-08-07T00:00:00","date_gmt":"2004-08-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aproximacion-adiabatica-en-sistemas-fermionicos-a-termperatura-finita\/"},"modified":"2004-08-07T00:00:00","modified_gmt":"2004-08-07T00:00:00","slug":"aproximacion-adiabatica-en-sistemas-fermionicos-a-termperatura-finita","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/zaragoza\/aproximacion-adiabatica-en-sistemas-fermionicos-a-termperatura-finita\/","title":{"rendered":"Aproximaci\u00f3n adiab\u00e1tica en sistemas fermi\u00f3nicos a termperatura finita"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Justo L\u00f3pez Sarri\u00f3n <\/strong><\/h2>\n<p>En esta memoria de tesis se tratan tres efectos no perturbativos a temperatura y densidad finitas, que est\u00e1n relacionados entre si por ser consecuencias de la aproximaci\u00f3n adiab\u00e1tica.  la aproximaci\u00f3n adiab\u00e1tica es una t\u00e9cnica que resulta \u00fatil en sistemas de dos tipos de grados de libertad cuyas escalas temporales son muy distintas.  esta misma idea ha sido usada en la primera parte de esta memoria para obtener un m\u00e9todo alternativo para encontrar acciones efectivas en sistemas de campos relativistas.  En particular, como modelo de aplicaci\u00f3n ha sido utilizado un sistema de fermiones acoplado a un campo vectorial con simetr\u00eda su(2), obteniendo diferentes regiones de acoplamiento donde la acci\u00f3n efectiva resulta altamente no perturbativa.  a un nivel m\u00e1s formal, tanto el n\u00famero fermi\u00f3tico inducido como la carga central, son aspectos \u00edntimamente ligados a las fases geom\u00e9tricas que surgen en el marco de la aproximaci\u00f3n adiab\u00e1tica.  en la segunda, y tercera parte de este trabajo se ha analizado el comportamiento de estos dos fen\u00f3menos cuando se consideran efectos de densidad y temperaturas finitas.  as\u00ed, en el marco del n\u00famero fermi\u00f3nico se han obtenido expresiones compactas para las correcciones de esta cantidad en los modelos sigma no lineales en (1+1), (2+1), (3+1) dimensiones, respectivamente, a temperatura finita. se ha comprobado expl\u00edcitamente que el comportamiento topol\u00f3gico de este operador se pierde en tales condiciones.  Finalmente, se han visto algunos modelos de aplicaci\u00f3n de estos resultados.  por \u00faltimo, en el marco de las cargas centrales, se ha desarrollado un m\u00e9todo sistem\u00e1tico para su c\u00e1lculo, incluyendo efectos de temperatura y densidad finitas.  Se ha comprobado la independencia de la carga central con la temperatura en un modelo bidimensional y se han analizado las posibles consecuencias en modelos de dimensionalidad m\u00e1s general.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aproximaci\u00f3n adiab\u00e1tica en sistemas fermi\u00f3nicos a termperatura finita<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aproximaci\u00f3n adiab\u00e1tica en sistemas fermi\u00f3nicos a termperatura finita <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Justo L\u00f3pez Sarri\u00f3n <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/07\/2004<\/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> Cort\u00e9s Azcoiti Jos\u00e9 Luis<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: joaqu\u00edn S\u00e1nchez guill\u00e9n <\/li>\n<li>lorenzo Luis Salcedo moreno (vocal)<\/li>\n<li>carmelo P\u00e9rez mart\u00edn (vocal)<\/li>\n<li>Fernando M\u00e9ndez ferrada (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Justo L\u00f3pez Sarri\u00f3n En esta memoria de tesis se tratan tres efectos no perturbativos a temperatura y [&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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