The probability functional description of a wave

[peeyush_ali]

it could be by the power of Newton's laws and energy conservation principles, one can sort out the equation of a wave classically...
y=a exp(-iw(t-x/v) ) ; ----1.
in the quantum domains where classical situations are ruled out, how is it apt to say or on which basis can we say that,

psi(x)=a exp(-iw(t-x/v)) ;-------2.

psi(x) is the probability function of finding umm may be an electron..

PS: what all i want is... Newton's laws n energy cons. principles concludes eqn 1.

but how passionately can 2. be justified!

thanks in advance..

 

[zhermes]

I can't decipher what you're asking / talking about.

 

[peeyush_ali]

I can't decipher what you're asking / talking about.

lol... i was just trying to know that "how mysteriously" can the probability function
psi(x) = a exp(-iw(t-x/v) ) (all symbols have their usual meanings)
be written , which describes the statistical description of particles such as photons, electrons, etc., as a function of time, position etc.,

while , y (displacement of a particle) = a exp(-iw(t-x/v)) can be derived (classically) using the Newton's laws and principle of conservation of energy..

 

[y.moghadamnia]

are u talking about QM complications? I mean we have the correspondance principle but when we enter QM we need to adjust, is that what ur saying?

 

[peeyush_ali]

are u talking about QM complications? I mean we have the correspondance principle but when we enter QM we need to adjust, is that what ur saying?

yes...! why do we need to "adjust"... what is the law which could justifies this "adjustment" we do? it cant' be just like that simply right!

 

[y.moghadamnia]

well, I am not so sure about ur question but there is no certain law to tell us how exactly we adjust in QM or such, while moving from classical physics.we need to work with eyes wide open and we need to get it right, in QM so many things are not correct according to the physics principles. but we use them because they give us the right results, that we gain from experience.

 

[peeyush_ali]

well, I am not so sure about ur question but there is no certain law to tell us how exactly we adjust in QM or such, while moving from classical physics.we need to work with eyes wide open and we need to get it right, in QM so many things are not correct according to the physics principles. but we use them because they give us the right results, that we gain from experience.

thanks alot! atleast I am less depressed ...i just begin my study of qm...

 

[y.moghadamnia]

why would u be depressed at all? physics is about failing more and winning less, all sciences are, and what we truly do is never quit. good luck!

 

[peeyush_ali]

:) true! ..
can u suggest me some book of conceptual problems on QM to improve skill and also understanding in QM..?
thanks in advance

 

[y.moghadamnia]

well, yeah, of course, my favorite textbook is QM by shankar, its a great one but doesn't have many problems.u can also use books by Zettili, byron and shaums problems.
u can go to www.library.nu[/URL] and after registration u can search all the QM books and also download 'em.
good luck!