20 402
- S - |
Moleküldynamik im Immunsystem
(2 SWS); Mo 14.00-16.00 - Arnimallee 14, SR E2 (1.1.53) |
(11.4.) |
Ulrike Alexiev |
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20 411
- V - |
Quantum Computation
(2 SWS); Mi 14.00-16.00 - Arnimallee 14, SR T1 (1.3.21) |
(13.4.) |
Robert Schrader |
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20 412
- V - |
Einführung in die konforme Feld-Theorie
(2 SWS) |
(15.4.) |
Jörg Teschner |
Ziel meiner Vorlesung wird es sein, Hinweise zur Beantwortung der folgenden Fragen zu geben:
1.) Was ist konforme Invarianz und wann kann sie auftreten?
2.) Wie kann man sie nutzen, welche Art von Information liefert sie ?
Die zugrundeliegende Perspektive soll die der statistischen Mechanik / kritischen Phänomene sein.
Ich bin gerne bereit, Struktur, Inhalt und Anspruch an die Bedürfnisse der Zuhörer anzupassen.
Als (vorläufige) Gliederung schlage ich vor:
1.) Kritische Phänomene in zwei Dimensionen:
- Motivation / Intuitives Bild
2.) Das Ising-Modell
- Exakte Loesung
- konforme Invarianz am kritischen Punkt
3.) Methoden der konformen Feldtheorie
- konforme Symmetrie und ihre Darstellungen
- Charaktere
- Einige Methoden zur Berechnung der
Korrelationsfunktionen
Wenn möglich:
4.) Korrekturen zum kritischen Verhalten
- Finite Size Scaling (etwa: Skalenverhalten im endl. Volumen)
- konforme Störungstheorie
- Übergänge zw. Universalitätsklassen
Literatur:
1.) P. Christe, M. Henkel: Introduction to Conformal Invariance and
Its Application to Critical Phenomena, Lecture Notes in Physics
m16, Springer
2.) J. Cardy: Conformal Invariance and Statistical Mechanics,
Proceedings of Les Houches Summer School 1988, Eds. E. Brezin
and J. Zinn-Justin, (ohne Bilder auch zu finden unter:
http://www-thphys.physics.ox.ac.uk/users/JohnCardy/ )
3.) I. Affleck: Field Theory Methods and Quantum Critical Phenomena,
Proceedings of Les Houches Summer School 1988, Eds. E. Brezin
and J. Zinn-Justin. |
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20 413
- V+Ü - |
Introduction to Group Theory with Applications in Molecular and Solid State Physics
(2-std. V + 2-std. Ü)
(4 SWS) (in Englisch); Do 10.00-12.00 und 14.00-16.00 - Arnimallee 14, FB-Raum (1.1.16) |
(14.4.) |
Karsten Horn |
Lecture Course given within the International Max Planck Research School “Complex Surfaces in Materials Science”
Symmetry considerations are useful when dealing with problems in many fields of physics; they often lead to selection rules and other criteria, which remove the need for numerical calculations or at least greatly simplify them. This lecture course deals with symmetry elements and point groups, introduces group representations and discusses the most important properties of irreducible representations and their characters. Group theory is of particular importance in the quantum-mechanical treatment of molecular orbitals. From a basic assignment of the
irreducible representations of atomic orbitals, we will discuss, among other things, symmetryinduced lowering of electronic degeneracies. The classification of molecular vibrations is used as a simple example for the application of group representations. Other applications include phonon and electron bands in solids. Since this is a lecture course for experimentalists, there will be few mathematical proofs; emphasis is put on the use of character tables and correlation tables, using many examples. Having attended the lecture course you should be able to solve, without recourse to calculations, problems such as finding out whether a particular electronic band in a solid will have to split by symmetry in different parts of the Brillouin zone, or why the interaction between specific atomic orbitals in a molecule is forbidden. We will also discuss spontaneous symmetry lowering such as the Jahn-Teller effect.
This lecture course is aimed at students in the Hauptstudium as well as Diplomanden and Doktoranden, who are involved in an experimental Diplomarbeit or Ph.D. thesis; this of course includes students in the IMPRS “Complex Surfaces in Materials Science”.
Requirements: Basic quantum mechanics; basic solid state physics.
Literature : There are many good textbooks for this important field. I will follow, for the most part, the excellent book by M.Tinkham, "Group Theory and Quantum Mechanics",
McGraw-Hill 1964, and the classic book by E. Wigner, "Gruppentheorie...", Vieweg 1931,
(Vieweg Reprint 1977); both are available in the FB-Bibliothek .
Another book with more applications is the one by G.Burns, "Introduction to Group Theory with Applications". |
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20 414
- V+Ü - |
Integrable Quantenfeldtheorien
(4-std. V + 2-std. Ü)
(6 SWS); Mi, Do 10.00-12.00 - Arnimallee 14, SR T2 (1.4.03) |
(13.4.) |
Michael Karowski |
Zielgruppe:
Studierende im Hauptstudium, Diplomanden, Doktoranden
Art der Durchführung:
Vorlesung mit Übungen
Voraussetzung:
Quantentheorie
Inhalt:
Einführung in die Quantenfeldtheorie, Integrable Modelle der klassischen und Quantenfeldtheorie, exakte S-Matrizen, Yang-Baxter-Algebra, Quantengruppen, exakte Formfaktoren
Literatur:
Wird in der Vorlesung bekannt gegeben |
| |
20 415
- V+Ü - |
Oberflächenuntersuchungen mit Korpuskularstrahlen
(6 SWS); Block vom 14.3.-24.3., jeweils 10.00-12.00 und 14.00-16.00 - Arnimallee 14, Gruppenraum 0.3.25 |
|
Karl-Heinz Rieder |
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(21 821)
- V - |
Hydrogen Bonding and Hydrogen Transfer
(in Englisch); Mi 17.00-19.00 - Takustr. 3, Hs
(see separate announcements) |
(s. A.) |
Helmut Baumgärtel,
Jürgen-H. Fuhrhop,
Ernst-Walter Knapp,
Hans-Heinrich Limbach,
Jörn Manz,
Hartmut Oschkinat,
Hans-Ulrich Reißig,
Beate Koksch,
Eugen Illenberger,
Leticia Gonzalez Herrero,
Klaus Weisz,
Dietmar Stehlik,
Maarten Peter Heyn,
Hans-Martin Vieth,
Ludger Wöste,
Thomas Elsässer,
Ruep Lechner,
Knut Asmis |
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