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Quantum physics for professionals

10 Questions - Developed by: - Developed on: 2020-06-23 - 918 taken

If you are a physics student, test your knowledge here!

1

The state of a single particle physical system in quantum mechanics is represented by a vector in?

Minkowski space
Banach space
Hilbert space
Fock space

2

Select the set of commuting operators for a time-independent quantum system?

(L^2, L_z, H)
(L_x, L_y, L_z)
(x, p_x, H)

3

What does it mean when we say some quantum number (observable quantity) is degenerate?

There is more possible quantum states associated with the quantum number
There is only one quantum state associated with the quantum number
There is no quantum state associated with the quantum number

4

How does the spin-orbital interaction within the hydrogen atom influence the energy levels compared to the scenario when no spin-orbital interaction is taken into account?

It shifts the energy levels towards higher energies (towards lower negative energies) and reduce the energy level degeneracy
It shifts the energy levels towards lower energies (towards higher negative energies) and reduce the energy level degeneracy
It shifts the energy levels towards lower energies (towards higher negative energies) increasing the degeneracy level
It shifts the energy levels towards higher energies (towards lower negative energies) increasing the degeneracy level

5

What symmetry group we use for gauge description of electromagnetic interaction?

U(1)
SO(1,3)
SU(3)
SU(2)

6

The number of free parameters of a gauge group used for the description of one of the fundamental forces tells us?

The number of gauge bosons assosiated with the force
The number of charges associated with the force
The number of goldstone bosons

7

What symmetry group is broken by the Higgs mechanism?

SU(3)_color
SU(2)_L
U(1)_Y
SU(2)_L x U(1)_Y

8

How does new particle appear at LHC?

There is a unusual particle path in the detector
There is a missing energy and momentum in the observed event
There is a 5 sigma deviation in the number of events in the invariant mass distribution

9

What interacts weakly?

Only neutrinos
Only hadrons
All right handed fermions
All left handed fermions
Only leptons

10

How is Higgs potential usually called?

The Mass potential
The sombrero potential
The God's potential

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