[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 489: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 385: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4787: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4789: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4790: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4791: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
UBA - CienciaS :: Ver Tema - [Sin resolver] 2ºP - 1ºC 2004 - Ej 1
UBA - CienciaS
http://ubacs.com.ar/ubacs/

[Sin resolver] 2ºP - 1ºC 2004 - Ej 1
http://ubacs.com.ar/ubacs/viewtopic.php?f=208&t=1729
Página 1 de 1

Autor:  bel [ 13 Dic 2009, 13:33 ]
Asunto:  [Sin resolver] 2ºP - 1ºC 2004 - Ej 1

Al igual que el ejercicio 11 de la práctica 7, todavía no sé cómo se resuelve:

El estado de una partícula libre en una dimensión a tiempo t=0 es:



donde es una constante. Hallar:

(a) El estado de la partícula a todo tiempo.
(b) La incerteza en posición y en momento a todo tiempo.


Bueno... realmente no entiendo este asunto, si el término temporal que hay qu agregar es no sé cuál vendría siendo esa energía... porque en este estado que es una cl de autofunciones, no hay una energía bien definida... o sí?
mucha confusión :(

Autor:  Pato [ 13 Dic 2009, 14:09 ]
Asunto:  Re: [Sin resolver] 2ºP - 1ºC 2004 - Ej 1

va a estar siempre dado por una combinación de las autofunciones de H. Para una partícula libre la energía no está discretizada, hay un continuo de energías. Los autoestados de una partícula libre no son normalizables, por lo tanto nunca se puede tener una partícula libre con energía bien definida (esta última oración es medio una cita del Griffiths, él lo dice mejor, obviamente).

¿Entonces, qué hay que hacer acá? La energía no está discretizada, entonces tal vez no tenga mucho sentido hablar de coeficientes de una combinación lineal, en cambio, podemos habla de un espectro.


Esta fórmula te puede ayudar después:

Autor:  bel [ 13 Dic 2009, 14:31 ]
Asunto:  Re: [Sin resolver] 2ºP - 1ºC 2004 - Ej 1

buenísimo.. y es la antitransformada (o trasnformada, nunca sé) de ???

gracias pato..

Autor:  Pato [ 13 Dic 2009, 15:31 ]
Asunto:  Re: [Sin resolver] 2ºP - 1ºC 2004 - Ej 1

Por como escribí , es transformada, pero podría ser al revés (creo)

Ah, también me falto un

De nada

Autor:  Yago [ 13 Dic 2009, 20:40 ]
Asunto:  Re: [Sin resolver] 2ºP - 1ºC 2004 - Ej 1

En el libro de Griffiths está explicado cómo hacer este ejercicio en el Ejemplo 2.6 aunque no es una gaussiana. El problema 2.22 es igual al que está acá pero no está resuelto. Para los que no tienen el libro, está en gigapedia.org

Página 1 de 1 Todos los horarios son UTC - 3 horas
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/