THE EVOLUTION OF FIELDS IN THE PROCESS OF PREHEATING IN THE EARLY UNIVERSE
Section: PHYSICS OF GALAXIES AND COSMOLOGY
Authors:
1.
National Research University ``Higher School of Economics''
2.
St.Petersburg State Maritime Technical University
Type:
Сonference article
Published:
27.12.2024
Subject area:
UDK 52 Астрономия. Геодезия
UDK 53 Физика
UDK 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
UDK 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
UDK 523 Солнечная система
UDK 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
UDK 52-1 Метод изучения
UDK 52-6 Излучение и связанные с ним процессы
GRNTI 41.00 АСТРОНОМИЯ
GRNTI 29.35 Радиофизика. Физические основы электроники
GRNTI 29.31 Оптика
GRNTI 29.33 Лазерная физика
GRNTI 29.27 Физика плазмы
GRNTI 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
OKSO 03.06.01 Физика и астрономия
OKSO 03.05.01 Астрономия
OKSO 03.04.03 Радиофизика
BBK 2 ЕСТЕСТВЕННЫЕ НАУКИ
BBK 223 Физика
TBK 614 Астрономия
TBK 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDK 53 Физика
UDK 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
UDK 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
UDK 523 Солнечная система
UDK 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
UDK 52-1 Метод изучения
UDK 52-6 Излучение и связанные с ним процессы
GRNTI 41.00 АСТРОНОМИЯ
GRNTI 29.35 Радиофизика. Физические основы электроники
GRNTI 29.31 Оптика
GRNTI 29.33 Лазерная физика
GRNTI 29.27 Физика плазмы
GRNTI 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
OKSO 03.06.01 Физика и астрономия
OKSO 03.05.01 Астрономия
OKSO 03.04.03 Радиофизика
BBK 2 ЕСТЕСТВЕННЫЕ НАУКИ
BBK 223 Физика
TBK 614 Астрономия
TBK 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Language:
English
Keywords:
cosmology: dark energy, early universe, inflation
Abstract (English):
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.
Keywords:
cosmology: dark energy, early universe, inflation
cosmology: dark energy, early universe, inflation
1. Arkhipova N.A. and Pilipenko S.V., 2016, Journal of Modern Physics D, 25 (14), id. 1650109
2. Avsadzhanishvili O., Arkhipova N.A., Samushiya L., et al., 2014, European Physical Journal C, 74, 11, id. 3127
3. Linde A., 2005, Contemp.Concepts Phys., 5, 2, p. 1
4. Perlmutter S., Aldering G., Goldhaber G., et al., 1999, Astron. J., 517, p. 565
5. Riess A.G., Filippenko A.V., Challis P., et al., 1998, Astron. J., 116, p. 1009
6. Rubakov V.A. and Tinyakov P.G., 2008, Phys. Usp., 51, 2, p. 759
