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From: jekob on 27 Dec 2009 04:46
on his equation he sis that the equation doesn't depend on time but
according to the principle f uncertainty energy can not be measured
with out affecting time.
so how it can be a time independent equation ?
From: eratosthenes on 27 Dec 2009 07:42
On Dec 27, 4:46 am, jekob <jkb...(a)gmail.com> wrote:
> on his equation he sis that the equation doesn't depend on time but
> according to the principle f uncertainty energy can not be measured
> with out affecting time.
> so how it can be a time independent equation ?

The time independent SWE is only valid for so-called bounded state or
some other special static situations. In general you do in fact need
a time dependent form. Unfortunately the fact that having time
dependence in the equation makes things mathematically complicated
results in a lot of professors and researchers simply not dealing with
it.

Patrick
From: Tom Roberts on 27 Dec 2009 11:17
jekob wrote:
> on his equation he sis that the equation doesn't depend on time but
> according to the principle f uncertainty energy can not be measured
> with out affecting time.
> so how it can be a time independent equation ?

If you would STUDY physics, instead of just making stupid guesses based on
isolated phrases, you would know that the time independent Schroedinger equation
applies only to steady-state situations, IN WHICH THERE IS NO CHANGE OVER TIME.
For example, the ground state of an isolated atom. It can also be used in
situations which are APPROXIMATELY time independent, for instance to compute
transitions between atomic states that are long-lived compared to the duration
of the transition.

Knowledge is not gained by pooling ignorance.
-- Ayn Rand
... or by mindlessly repeating it.
-- Tom Roberts


eratosthenes wrote:
> Unfortunately the fact that having time
> dependence in the equation makes things mathematically complicated
> results in a lot of professors and researchers simply not dealing with
> it.

Only in elementary CLASSES, where the purpose is to TEACH, not model systems
accurately. The time dependence is not a significant increase in complexity, and
modern analysis techniques and computer codes handle it just fine. The real
limitations are on the overall complexity of the system, not just the time
dependence (which is often of prime interest)....


Tom Roberts
From: Lee on 27 Dec 2009 12:14
On Dec 27, 5:17 pm, Tom Roberts <tjroberts...(a)sbcglobal.net> wrote:
> jekob wrote:
> > on his equation he sis that the equation doesn't depend on time but
> > according to the principle f uncertainty energy can not be measured
> > with out affecting time.
> > so how it can be a time independent equation ?
>
> If you would STUDY physics, instead of just making stupid guesses based on
> isolated phrases, you would know that the time independent Schroedinger equation
> applies only to steady-state situations, IN WHICH THERE IS NO CHANGE OVER TIME.

i disagree,

if no change why apply any complex equations in the first place

> For example, the ground state of an isolated atom. It can also be used in
> situations which are APPROXIMATELY time independent, for instance to compute
> transitions between atomic states that are long-lived compared to the duration
> of the transition.

what do you mean by time of transition?

atomic states are not transitable in time

>
> Knowledge is not gained by pooling ignorance.
> -- Ayn Rand
> ... or by mindlessly repeating it.
> -- Tom Roberts

i disagree, this is exactly what they call evolution

>
> eratosthenes wrote:
> > Unfortunately the fact that having time
> > dependence in the equation makes things mathematically complicated
> > results in a lot of professors and researchers simply not dealing with
> > it.
>
> Only in elementary CLASSES, where the purpose is to TEACH, not model systems
> accurately. The time dependence is not a significant increase in complexity, and
> modern analysis techniques and computer codes handle it just fine. The real
> limitations are on the overall complexity of the system, not just the time
> dependence (which is often of prime interest)....
>
> Tom Roberts

would you mind to give such a simplified code example, thanks
From: eric gisse on 27 Dec 2009 20:54
jekob wrote:

> on his equation he sis that the equation doesn't depend on time but
> according to the principle f uncertainty energy can not be measured
> with out affecting time.
> so how it can be a time independent equation ?

If you want this question answered, you only have to do a few simple things:

1) Stop talking like an idiot. You've been doing it for years - it is old
now.
2) Stop hiding under anonymous proxies.
3) Pick a nym and stick with it.
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