An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance:
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| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Garching
MPQ
2011
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| Ausgabe: | Als Ms. des Autors gedr. |
| Schriftenreihe: | MPQ
338 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | X, 140 S. Ill., graph. Darst. 30 cm |
Internformat
MARC
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| 245 | 1 | 0 | |a An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance |c Louis Costa. Max-Planck-Institut für Quantenoptik |
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Datensatz im Suchindex
| _version_ | 1804148363318263808 |
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| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION 1
1.1 QUANTUM DEGENERATE FERMI GASES 1
1.2 MANY-BODY PHYSICS AND THE BEC-BCS CROSSOVER 2
1.3 ATOM SCATTERING FROM LIGHT GRATINGS 4
1.4 OUTLINE OF THIS THESIS 5
2 THEORY 9
2.1 ULTRACOLD QUANTUM GASES 9
2.1.1 QUANTUM STATISTICS 9
2.1.2 FERMIONIC QUANTUM GASES 11
2.2 ULTRACOLD COLLISIONS 13
2.2.1 TWO-BODY HAMILTONIAN 13
2.2.2 DIFFERENTIAL AND TOTAL ELASTIC SCATTERING CROSS SECTION 14
2.2.3 S-WAVE REGIME, LOW ENERGY LIMIT 15
2.3 FESHBACH RESONANCES 16
2.3.1 MAGNETIC FIELD INDUCED FESHBACH RESONANCES 17
2.3.2 FESHBACH RESONANCES IN THE 6 LI- 40 K MIXTURE 20
2.3.3 CLASSIFICATION OF BROAD AND NARROW FESHBACH RESONANCES 22 2.3.4
MANY-BODY REGIMES IN THE ZERO TEMPERATURE LIMIT 24
2.3.5 FEW-BODY PROBLEM CLOSE TO A NARROW FESHBACH RESONANCE 29 2.4
CROSS-SPECIES THERMALIZATION IN ATOMIC GASES 29
2.4.1 BOLTZMANN EQUATION 29
2.4.2 CROSS-DIMENSIONAL THERMAL RELAXATION 32
3 EXPERIMENTAL APPARATUS 43
3.1 EXPERIMENTAL CONCEPT AND OVERVIEW 43
3.2 FROM A MOT TO QUANTUM DEGENERACY 45
3.3 BENCHMARK TESTS OF AN EXPERIMENTAL CYCLE 46
3.4 POTASSIUM LASER SYSTEM 47
3.4.1 OVERVIEW 48
3.4.2 BRAGG BEAM SETUP 48
3.5 OPTICAL DIPOLE TRAP 49
3.5.1 PRINCIPLE 49
VII
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/101415460X
DIGITALISIERT DURCH
IMAGE 2
CONTENTS
3.5.2 TECHNICAL REALIZATION 51
3.5.3 ALIGNMENT OF BEAMS 52
3.5.4 CHARACTERIZATION OF TRAP 53
3.6 FESHBACH MAGNETIC FIELDS 54
3.6.1 FESHBACH COILS AND CURRENT CONTROL 54
3.6.2 STABILITY AND AMBIENT MAGNETIC FIELDS 56
3.6.3 MAGNETIC FIELD CALIBRATION 57
3.7 DETECTION OF ATOMS AT HIGH MAGNETIC FIELD 58
3.7.1 ABSORPTION IMAGING 58
3.7.2 STERN-GERLACH SETUP 60
4 DIFFRACTION OF FERMIONS FROM LIGHT GRATINGS 61
4.1 DIFFRACTION OF ATOMS FROM A STANDING WAVE 61
4.1.1 ATOM-LIGHT INTERACTION 61
4.1.2 PRINCIPLE OF BRAGG SCATTERING 63
4.1.3 PRINCIPLE OF KAPITZA-DIRAC SCATTERING 65
4.2 EXPERIMENTAL RESULTS 66
4.2.1 INFLUENCE OF FINITE TEMPERATURE OF ATOMIC CLOUD 66
4.2.2 BRAGG SCATTERING 67
4.2.3 KAPITZA-DIRAC SCATTERING 71
4.2.4 DISCUSSION AND CONCLUSIONS 72
5 ULTRACOLD FERMI-FERMI MOLECULES AT A NARROW FESHBACH RESONANCE 75 5.1
EXPERIMENTAL SEQUENCE 76
5.1.1 LOADING OF THE OPTICAL DIPOLE TRAP 76
5.1.2 STATE PREPARATION 77
5.2 FESHBACH LOSS SPECTROSCOPY 78
5.3 HETERONUCLEAR FERMI-FERMI MOLECULES 80
5.3.1 ADIABATIC CONVERSION OF ATOMS TO MOLECULES 80
5.3.2 RECONVERSION TO ATOMS FROM DISSOCIATED MOLECULES 81
5.3.3 DIRECT DETECTION OF MOLECULES 82
5.3.4 MOLECULE LIFETIME IN AN ATOM-MOLECULE ENSEMBLE 84
6 S-WAVE INTERACTION IN A TWO-SPECIES FERMI-FERMI MIXTURE 87
6.1 EXPERIMENTAL SEQUENCE 87
6.2 CROSS-DIMENSIONAL THERMAL RELAXATION 89
6.3 ELASTIC SCATTERING CROSS SECTIONS 90
6.4 POSITION AND WIDTH OF FESHBACH RESONANCE 92
6.5 TWO-BODY BOUND STATES AT THE CROSSOVER OF A NARROW FESHBACH
RESONANCE . 93
7 CONCLUSIONS AND OUTLOOK 97
A LEVEL SCHEMES JOL
B CENTER OF MASS AND RELATIVE COORDINATES 103
V NI
IMAGE 3
CONTENTS
C INITIAL PARAMETERS AND CONSTRAINTS FOR CROSS-DIMENSIONAL RELAXATION
105 C.I VALIDITY OF KINETIC MODEL 105
C.2 INITIAL CONDITIONS FOR CROSS-DIMENSIONAL RELAXATION 106
C.2.1 DEPENDENCE ON PARTICLE NUMBER AND INITIAL ANISOTROPY 106 C.2.2
INITIAL IMBALANCE OF MEAN ENERGIES PER PARTICLE 109
C.3 ENERGY DEPENDENCE OF SCATTERING CROSS SECTION 112
D OPTICAL TRANSITION STRENGTH FOR HIGH MAGNETIC FIELD 115
D.I REPRESENTATION OF THE HYPERFINE STRUCTURE AND ZEEMAN OPERATOR 115
D.2 OPTICAL TRANSITION STRENGTH 117
DANKSAGUNG 138
IX
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| any_adam_object | 1 |
| author | Costa, Louis 1981- |
| author_GND | (DE-588)1013249232 |
| author_facet | Costa, Louis 1981- |
| author_role | aut |
| author_sort | Costa, Louis 1981- |
| author_variant | l c lc |
| building | Verbundindex |
| bvnumber | BV039545435 |
| ctrlnum | (OCoLC)750941205 (DE-599)DNB101415460X |
| dewey-full | 535.15 530.12 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 535 - Light and related radiation 530 - Physics |
| dewey-raw | 535.15 530.12 |
| dewey-search | 535.15 530.12 |
| dewey-sort | 3535.15 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
| edition | Als Ms. des Autors gedr. |
| format | Thesis Book |
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| indexdate | 2024-07-10T00:05:57Z |
| institution | BVB |
| language | English |
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| physical | X, 140 S. Ill., graph. Darst. 30 cm |
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| spelling | Costa, Louis 1981- Verfasser (DE-588)1013249232 aut An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance Louis Costa. Max-Planck-Institut für Quantenoptik Als Ms. des Autors gedr. Garching MPQ 2011 X, 140 S. Ill., graph. Darst. 30 cm txt rdacontent n rdamedia nc rdacarrier MPQ 338 Zugl.: München, Univ., Diss., 2011 (DE-588)4113937-9 Hochschulschrift gnd-content MPQ 338 (DE-604)BV000009909 338 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024397428&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Costa, Louis 1981- An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance MPQ |
| subject_GND | (DE-588)4113937-9 |
| title | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance |
| title_auth | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance |
| title_exact_search | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance |
| title_full | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance Louis Costa. Max-Planck-Institut für Quantenoptik |
| title_fullStr | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance Louis Costa. Max-Planck-Institut für Quantenoptik |
| title_full_unstemmed | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance Louis Costa. Max-Planck-Institut für Quantenoptik |
| title_short | An interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance |
| title_sort | an interacting fermi fermi mixture at the crossover of a narrow feshbach resonance |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024397428&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000009909 |
| work_keys_str_mv | AT costalouis aninteractingfermifermimixtureatthecrossoverofanarrowfeshbachresonance |