Hi, I'm working on the interaction between a two level atom (|g>, |e>)
In my exercise we have to use the rotation operator :
R(t)=exp[i(σz+1)ωt/2]
with σz the pauli matrix which is in the {|g>,|e>} basis :
(1 0)
(0 -1)
If i want to represent my rotation operator in the {|g>,|e>} basis. Then...
yes it was what I have written for the Part A and the part C. In the part B I would like to determine εz with what i have written but λ→∞...
It is that: http://image.noelshack.com/fichiers/2015/45/1446679886-20151105-002818.jpgSO i can't use this method.
I have to do that ...
Hi, sorry for my bad english.
PART A
I have a cube of 10mm x 10mm x 10mm which is compressed with a stress of 0.5 Mpa on his superior face (σz=-0.6)
young modulus=20Mpa, poisson coef=0.5
I have the stress tensor:
[ 0 0 0]
[ 0 0 0]
[ 0 0 -0.6]
And then, the deformation tensor is :
[0.015 0 0]
[...
We have a cube with sides of 10mm (fig a) (in the same material than the exercice 1 (have poisson coef & young's modulus)
A- figure A
1- Write the stress state and the relatives values deformations (tensor)
2- Why the sum of relatives deformation is equal to 0?
B-Figure...
yes i know that i can have it in table already write. But in the exercise. They are these question : " calculate the young's modulus and poisson's ratio: we know that the material is purely elastical".
I think i have to use the answers of the previous questions which were : " calculate the...
Hi,
I was looking some exercices on internet about the poisson's ratio. I have just one question.
How can i calculate the young's modulus and poisson's ratio when i know that a material is purely elastical.
I calculate circonferential et longitudinal contraints and i have write the cauchy...