Dear All,
Next weeks research day on Tuesday will be at the Physics Building.
Christian will present his Master Thesis he wrote in Jürg Fröhlich's group.
Speaker: Christian Schilling
Title: Indeterminism and Decoherence in Standard Quantum Theory
Time: 5 pm
Place: HIT K51
Abstract:
In the first part we will address the question of indeterminism in standard
quantum theory with respect to measurement processes. A priori, it
is not clear whether the outcome of a measurement is determined by the
initial quantum state of the measurement device. We disprove determinism
in that sense by analyzing a correlated two-particle system in an
initial spin
singlet state and a measurement apparatus, which measures the spin of one
of the particles.
The second part will investigate decoherence in the double slit experiment
for a charged particle caused by an irradiated (monochromatic) laser wave.
By calculating the decoherence parameter it will be shown that the laser
wave destroys the interference pattern under certain conditions, namely a
high laser intensity, long interaction time and a wavelength of the laser in
the order of the slit distance.
Our results and further quantum features also emphasize the non
absoluteness of quantum events.
Cheers,
Dejan