THE EVOLUTION OF FIELDS IN THE PROCESS OF PREHEATING IN THE EARLY UNIVERSE
Авторы:
1.
National Research University ``Higher School of Economics''
2.
St.Petersburg State Maritime Technical University
Тип:
Статья конференции
Опубликовано:
27.12.2024
Классификаторы:
УДК 52 Астрономия. Геодезия
УДК 53 Физика
УДК 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
УДК 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
УДК 523 Солнечная система
УДК 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
УДК 52-1 Метод изучения
УДК 52-6 Излучение и связанные с ним процессы
ГРНТИ 41.00 АСТРОНОМИЯ
ГРНТИ 29.35 Радиофизика. Физические основы электроники
ГРНТИ 29.31 Оптика
ГРНТИ 29.33 Лазерная физика
ГРНТИ 29.27 Физика плазмы
ГРНТИ 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
ОКСО 03.06.01 Физика и астрономия
ОКСО 03.05.01 Астрономия
ОКСО 03.04.03 Радиофизика
ББК 2 ЕСТЕСТВЕННЫЕ НАУКИ
ББК 223 Физика
ТБК 614 Астрономия
ТБК 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
УДК 53 Физика
УДК 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
УДК 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
УДК 523 Солнечная система
УДК 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
УДК 52-1 Метод изучения
УДК 52-6 Излучение и связанные с ним процессы
ГРНТИ 41.00 АСТРОНОМИЯ
ГРНТИ 29.35 Радиофизика. Физические основы электроники
ГРНТИ 29.31 Оптика
ГРНТИ 29.33 Лазерная физика
ГРНТИ 29.27 Физика плазмы
ГРНТИ 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
ОКСО 03.06.01 Физика и астрономия
ОКСО 03.05.01 Астрономия
ОКСО 03.04.03 Радиофизика
ББК 2 ЕСТЕСТВЕННЫЕ НАУКИ
ББК 223 Физика
ТБК 614 Астрономия
ТБК 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Язык материала:
английский
Ключевые слова:
cosmology: dark energy, early universe, inflation
Аннотация (русский):
The long-term evolution of fields on the stage of primary heating of the Universe after inflation is investigated. Preheating is the stage of evolution of the Universe at which the inflaton, after the stage of slow rolling down on inflation, begins to oscillate near the minimum of its potential energy and act as a compelling external force in the equations of motion of other fields that were in a quantum state with a relatively small amplitude on inflation. Numerical calculations of the system's dynamics for long times shows that during the early phase of preheating, the energy of the material field is due to parametric resonance it grows to the energy of the inflaton. However, after a considerable duration, when the energies of the fields become aligned and there is a multiple transfer of energy from one field to another, the energy of the material field decreases faster than the energy of the inflaton. This could suggest that parametric resonance may not be sufficient for the disintegration of the inflaton and pumping its energy into the energy of material fields.
The long-term evolution of fields on the stage of primary heating of the Universe after inflation is investigated. Preheating is the stage of evolution of the Universe at which the inflaton, after the stage of slow rolling down on inflation, begins to oscillate near the minimum of its potential energy and act as a compelling external force in the equations of motion of other fields that were in a quantum state with a relatively small amplitude on inflation. Numerical calculations of the system's dynamics for long times shows that during the early phase of preheating, the energy of the material field is due to parametric resonance it grows to the energy of the inflaton. However, after a considerable duration, when the energies of the fields become aligned and there is a multiple transfer of energy from one field to another, the energy of the material field decreases faster than the energy of the inflaton. This could suggest that parametric resonance may not be sufficient for the disintegration of the inflaton and pumping its energy into the energy of material fields.
Ключевые слова:
cosmology: dark energy, early universe, inflation
cosmology: dark energy, early universe, inflation
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