Welche der folgenden Aussagen über die GaAs(110)-Oberfläche ist wahr?
In.PhASE Kolloquium 12

Quiz
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Physics
•
University
•
Hard

In.PhASE TU
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Durch Relaxation sind die Ga Atome zum Vakuum hin und die As Atome zum
Volumenkristall verschoben
Sie ist nicht polar
Es gibt mehr Ga als As Atome
Der Kippwinkel zwischen den relaxierten GA und As Atomen beträgt 20°
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welchen dieser Beiträge kann man NICHT in einem XP-Spektrum von GaAs sehen?
Die GaL2M23M23 Auger-Übergänge
Die Fermikante
Den Sekundär-elektronenhintergrund
As2p-Rumpfniveaus
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aus welchem Material besteht die Anode in der Röntgenquelle, die in den Experimenten
verwendet wurde?
Al (Aluminium)
Au (Gold)
Ag (Silber)
Ar (Argon)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What happens to the infinite tower of massive KK fields in the compactified theory when shrinking the compactified dimension to zero size?
They remain relevant dynamical fields that.
They must be set to zero by consistent truncation.
Their masses grow to infinity and thus they don't participate in any lower energy dynamics.
Since they go to zero mass, and we don't need to consider massless fields, we can forget about them.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does the symmetry group of a 6d theory of gravity break to when compactifying 3 dimensions on a 3-torus?
SO(6) breaks to SO(3) times U(3)
GL(6)/SO(6) breaks to GL(3) times SO(3)
GL(6) breaks to SO(6) times U(3)
GL(6)/SO(6) breaks to GL(3)/SO(3) times U(3)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What changes when compactifying the discussed scalar theory on an n-sphere instead of an n-torus?
The resulting fields are not scalars anymore but higher rank tensors
The symmetry group of the compactified space changes from U(n) to SO(n)
Both a) and b) are true
Neither of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welcher Oskar hat Chat GPT zu folge mit Lise Meitner an der Entdeckung der Kernspaltung gearbeitet?
Oskar Klein
Oskar Schweizer
Oskar Frisch
Oskar Kleinberg
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