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Course, academic year 2023/2024
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Macroscopic Quantum Phenomena II - NFPL172
Title: Makroskopické kvantové jevy II
Guaranteed by: Department of Low Temperature Physics (32-KFNT)
Faculty: Faculty of Mathematics and Physics
Actual: from 2005
Semester: summer
E-Credits: 3
Hours per week, examination: summer s.:2/0, Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: taught
Language: Czech
Teaching methods: full-time
Teaching methods: full-time
Guarantor: RNDr. Zdeněk Janů, CSc.
prof. RNDr. Ladislav Skrbek, DrSc.
Annotation -
Last update: T_KFNT (06.05.2003)
Phase diagrams and basic properties of 4 He and 3He. Superfluid He II- two fluid model, collective modes, fountain effect, superfluid film, energy spectrum, macroscopic wave function, quantization of circulation- quantized vortices, superfluid hydrodynamics and turbulence. Superfluid 3He - basic ideas of generalized BCS theory, order parameter for the A, B and A1 phases, textures, orienting forces, NMR, phase-slips and Josephson phenomena in 3He, rotating 3He-continuous and singular vortices. BEC - hydrogen, alcali atoms, experiments, principles of laser cooling, BEC and superfluidity.
Course completion requirements - Czech
Last update: prof. RNDr. Ladislav Skrbek, DrSc. (10.10.2017)

Předmět je zakončen ústní zkouškou. Požadavky ke zkoušce odpovídají sylabu předmětu.

Literature - Czech
Last update: doc. RNDr. Vojtěch Chlan, Ph.D. (13.05.2019)

Fyzika nízkých teplot, MATFYZPRESS 1998

Fyzika nízkých teplot, I. část, MATFYZPRESS 2011

Fyzika nízkých teplot, II. část, MATFYZPRESS 2011

Syllabus -
Last update: T_KFNT (06.05.2003)

Basic properties of 4 He and 3He, liquifaction of 4He, Fermi-Dirac and Bose - Einstein quantum statistics. Ideal Bose gas, Bose - Einstein condensation (BEC). Ideal Fermi gas, Fermi liquid, zero sound. Phase diagrams of 4He a 3He, zero oscillations. 3He-4He mixtures, dilution refrigerator.

Superfluid He II - Fountain effect, mechano-caloric effect. Andronikashvili experiment, two-fluid model and Landau equations of motion, energy spectrum, criterion of superfluidity. Superfluid film. Collective modes - first, second, third and fourth sounds. Macroscopic wave function, quantization of circulation - quantized vortices, mutual friction, Kelvin and Tkachenko waves, introduction into superfluid hydrodynamics, superfluid turbulence. Positive and negative ions, ionic mobility, two-dimensional pools of ions below the surface of superfluid helium, plasma oscillations, crystallization.

Superfluid 3He - basic ideas of generalized BCS theory, paramagnons, equal spin pairing, order parameter for the A, B, and A1 phases. Textures and orienting forces, solitons. Nuclear magnetic resonance. Phase-slips and Josephson phenomena in 3He. Rotating 3He- continuous and singular vortices. Superfluid hydrodynamics in 3He, Kelvin-Helmholtz instability, transition to superfluid turbulence. Relationship between superfluidity and cosmology, Kibble-Zurek mechanism.

BEC - hydrogen, alcali atoms, experiments, principles of laser cooling, BEC and superfluidity. Quantized vortices in BEC.

 
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