Download Problems with Solution - Quantum Mechanics | PHYS 332 and more Study notes Quantum Mechanics in PDF only on Docsity! Leche 33 Prys 282 _ Sig of
In #2 lost chs, we rewrdie Cp Homi lenian for a particle WO
cenbead patenhal
A 52 Re
H = my âL + VĂ©P)
2mr?
We Waar that val Tang iy connie wih He, Ale
wie Ui, Tas He serqy ciginstotes con always be cosbuded du cule a
Wouy hak hay ore sinurltoneassly diggnstale of tf ark te,
âThus the cnegy eigenskeles are 1a, 40> hog
z Commutes
AaLâą> = Bq la,Âźad tol oway
Lado = Nola, Xm Magnidide argulor rowmnbum quired
Le fa ÂŁa0> = Aula, Zony B-Coapanent df angular monerten .
We shall deal ust Le tag angular monertuon. equokars by an (almost)
Paty opsalr Female. Te radial squahon wil requie a gifeel eguchne
aporoads .
Radial aguuahion
Gosidar Le wnegy equahas .
Hi Idm> = Enla,dm>
We aim Yo recast 40s ia ams of wave tuinchms expressed in, sphoical
Co-axdinales
a, kmS aw Yon (",8,d)
% do » we gowebiee he usual Conespeudace behueny states +
waueFunchiaus , Recall tat in Gotesion 09 -ordinales :
P(%4,2) = <xyzl YS
Sioilarly ur sphoiedl 0 -orchinales
Yir,0,8) = 10,d1„S
Most of the ules connecting Stakes 40 wauehunchans con he transcabed
withadt olterohor. Ong. exception, whed con be vethed by te usucd
wes for changa ag trom Gorlesion 4D sphaical co-ordurdlés is:
AHP = aon 0,4) Olt,0,8) r2 ve
a
rote tis
Example : Suppo Rat Y(r@,9)= ERMC Deming
OPA and sip fy kis as much og possible
* 2 pt w .
<HY = i dr 2 [Roy| [soso (a jewe]'
5 0 Ne
=|
= (ve r IR Case Lena
00
: jar r Jace) ]-
his is onalogus to te one ckmensoual ase whwe
PIP= pl»
Hae, Hue wavelynrehon vewon of tes cquohan ts:
4d wt 4
ak ax EK e PXMa
[ â
take Ce we
p p> Pp. {p>
What is Ha equivalent sizdement oe padial mount? Yan may expect
po a> A ele
i Constant
Exercise. « Deternune He radial prcbabilih, consiy for sude a wauehuchen .
Use it to answer Bo quashon of wl Yee cost kely valee for
Measuemant acteongs of
t is, Telermine +e pobabilit, Hat re Ar
VS pro tat
lo ⏠0 6 fysAr
Arswer Pf) gg VAe'pra TEAL Thay
Ar
Prob (céprP) \ Pie) dr = jaye en"
Prob Cre Âą crite (rns os tar [rosary ret)
= IAT de Ar + Ar*]
he tabi Oh, tuse ig. Pree (<br) fr Ă©pr)
Prd (% ÂŁ7 & wesAr) P+ 2c
âPO as %Âź 20
We really require more tuen duistnbukon. âThus bole allenph is
A Orr Ag
ipo Se Pry
whoe A
1S constant. Then He tadedl Probalolihy donvihy
Po) = [A\*
0 longer hes we Âą. This as Aralogaus to intensity of inegnehic
waves. Recall Lot if Yo doserbes tee wave kan tha |
on wie = Ee aot I= 11. But His woudl
imply Hak fe total power pasiing Keough a sphoe at radius 6 tg
{Ale r?
Ore. Compensates Wa We 4 elt.
Now consider a toe Ho radial Comp onant of Momenhon. Fist try
hn AR
Exacise, Does tein satish, Pe [Pro = pe Ip.
Answer Pripp> ~p ik & [be e'Prve]
= âUS 42 7 Tale elf he
= p(Aeiry) 4 +i _ Ae Prt
Not quite |
What modikeaton would we neod? Ke can se Rak frou Be
previous eyuchian
NG (Fe PM) =p Bera) yb a cies
Tue
wh ($+) B elprlk = Pr (Fe '\Prlc)
âThis suggests tat
pr a> ak (2 te)
On com veihy tis Fortally by taking Hie earlier ayprssian for 2a
rodicl âcompauant of mawentum ond le-expesting iin tems dy sploical
co-avdundles.. Noie that the aboye LX pressian &s 2G dont to:
leo. PelWs = -ik (3 A) „09),
Feally ening fo te 00M equation
lala 2 Bal a dim
DH OFA Inde = By Ct,eb]a,2ad
En Vo, (*,2,0)
> peta de> - <,8,d1 Ula dm) 4 <t, ©] VIP) | ada)
em 2mr?
= En Wdia (,Q, 4)