Neutrino flavor conversions in high-density astrophysical and cosmological environments:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Hamburg [u.a.]
DESY
2014
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Item Description: | Zusammenfassung in dt., engl. u. ital. Sprache |
| Physical Description: | 155 S. graph. Darst. |
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Record in the Search Index
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|---|---|
| adam_text | CONTENTS
INTRODUCTION 11
1 NEUTRINOS PROPERTIES AND OSCILLATIONS 15
1.1 NEUTRINOS IN THE STANDARD MODEL 15
1.2 NEUTRINOS MASS 16
1.3 NEUTRINO OSCILLATIONS 18
1.3.1 OSCILLATIONS IN VACUUM 20
1.3.2 OSCILLATIONS IN MATTER 22
1.4 NEUTRINO PHENOMENOLOGY 24
1.4.1 MASS SEARCHES 24
1.4.2 NEUTRINO MIXING PARAMETERS 25
1.4.3 ANOMALIES AND STERILE NEUTRINOS 28
2 NEUTRINO OSCILLATIONS IN HIGH DENSITY ENVIRONMENTS 31
2.1 DENSITY MATRIX FORMALISM 31
2.2 EQUATIONS OF MOTION FOR THE NEUTRINO ENSEMBLE 33
2.2.1 NEUTRINO INTERACTION TERMS 34
2.3 TWO EXTREME ENVIRONMENTS: THE EARLY UNIVERSE AND THE SUPER
NOVA CORE 38
3 SELF-INDUCED NEUTRINO OSCILLATIONS IN SUPERNOVAE 43
3.1 CORE-COLLAPSE SN DYNAMICS 44
3.1.1 EMISSION OF SN NEUTRINOS 45
3.2 SUPERNOVA POTENTIAL PROFILES AND NEUTRINO FLAVOR CONVERSIONS . . 47
3.3 SELF-INDUCED FLAVOR EVOLUTION OF SN NEUTRINOS 49
3.3.1 POLARIZATION VECTORS FORMALISM FOR TWO-FLAVOR SYSTEM . . 49
3.3.2 SINGLE-ANGLE APPROXIMATION 51
3.3.3 SELF-INDUCED AND MATTER-INDUCED MULTI-ANGLE EFFECTS . . 57
3.4 SELF-INDUCED SPECTRAL SPLITS DURING THE DIFFERENT SUPERNOVA PHASES
61
7
HTTP://D-NB.INFO/1051972213
4 MATTER SUPPRESSION OF SELF-INDUCED NEUTRINO OSCILLATIONS DUR
ING THE SN ACCRETION PHASE 65
4.1 NEUTRINO SIGNAL FROM SN MODEL FOR THE ACCRETION PHASE .... 66
4.2 CHARACTERIZATION OF THE FLAVOR CONVERSIONS DURING THE ACCRETION
PHASE 68
4.2.1 NEUTRINO EMISSION GEOMETRY 69
4.2.2 NEUTRINO NUMBER FLUXES FOR DIFFERENT FLAVORS 70
4.2.3 SET-UP OF THE FLAVOR EVOLUTION 71
4.2.4 OSCILLATION REGIMES 72
4.3 RESULTS OF MATTER EFFECT FOR DIFFERENT PROGENITOR MASS 74
4.3.1 10.8 M PROGENITOR MASS 74
4.3.2 18.0 M PROGENITOR MASS 77
4.3.3 8.8 M
G
PROGENITOR MASS 78
4.4 STABILITY ANALYSIS OF THE SELF-INDUCED FLAVOR CONVERSIONS .... 79
4.4.1 THE STABILITY CONDITION EQUATIONS 80
4.4.2 STABILITY ANALYSIS FOR THE ACCRETION PHASE 82
4.5 PHENOMONELOGICA! CONSEQUENCES 86
5 INTRODUCTION TO NEUTRINOS IN COSMOLOGY 89
5.1 THE ISOTROPIC AND HOMOGENOUS UNIVERSE 89
5.2 EQUILIBRIUM THERMODYNAMICS 91
5.2.1 OUT OF EQUILIBRIUM: BOLTZMANN EQUATION 93
5.3 NEUTRINO DECOUPLING AND RELIC NEUTRINO FORMATION 95
5.4 BIG-BANG NUCLEOSYNTHESIS 97
5.5 RADIATION CONTENT OF THE UNIVERSE AND N
E
S 100
5.6 EXTRA-RADIATION: COSMOLOGICAL OBSERVABLE EFFECTS 102
5.6.1 PRESENT OBSERVABLE CONSTRAINTS 105
6 ACTIVE-STERILE NEUTRINO OSCILLATIONS IN THE EARLY UNIVERSE 107
6.1 LIGHT STERILE NEUTRINOS AND COSMOLOGY 108
6.2 SET-UP OF THE FLAVOR EVOLUTION 109
6.3 EQUATIONS OF MOTION 110
6.3.1 AVERAGE MOMENTUM APPROXIMATION 114
6.4 BOUNDS ON STERILE MASS AND MIXING PARAMETER SPACE 116
6.5 ROLE OF THE NEUTRINO ASYMMETRY IN THE STERILE NEUTRINO PRO
DUCTION 122
6.5.1 STERILE NEUTRINO PRODUCTION: OUR EXPLORATIVE STUDY . . . 123
6.5.2 MULTI-MOMENTUM AND MULTI-FLAVOR ACTIVE-STERILE NEU
TRINO OSCILLATIONS 129
6.5.2.1 IMPACT ON BIG-BANG NUCLEOSYNTHESIS 132
8
CONCLUSIONS
BIBLIOGRAPHY
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| spelling | Saviano, Ninetta Verfasser aut Neutrino flavor conversions in high-density astrophysical and cosmological environments Ninetta Saviano Hamburg [u.a.] DESY 2014 155 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zusammenfassung in dt., engl. u. ital. Sprache Hamburg, Univ., Diss, 2013 (DE-588)4113937-9 Hochschulschrift gnd-content DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027376634&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Saviano, Ninetta Neutrino flavor conversions in high-density astrophysical and cosmological environments |
| subject_GND | (DE-588)4113937-9 |
| title | Neutrino flavor conversions in high-density astrophysical and cosmological environments |
| title_auth | Neutrino flavor conversions in high-density astrophysical and cosmological environments |
| title_exact_search | Neutrino flavor conversions in high-density astrophysical and cosmological environments |
| title_full | Neutrino flavor conversions in high-density astrophysical and cosmological environments Ninetta Saviano |
| title_fullStr | Neutrino flavor conversions in high-density astrophysical and cosmological environments Ninetta Saviano |
| title_full_unstemmed | Neutrino flavor conversions in high-density astrophysical and cosmological environments Ninetta Saviano |
| title_short | Neutrino flavor conversions in high-density astrophysical and cosmological environments |
| title_sort | neutrino flavor conversions in high density astrophysical and cosmological environments |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027376634&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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