Evolution of fluctuations in energy at the horizon and in the volume enclosed by it, in an expanding universe

VS Namboothiri, TK Mathew - arXiv preprint arXiv:2408.09771, 2024 - arxiv.org
This study examines the statistical fluctuations in energy on the Hubble horizon and the
Komar energy, which represents the total gravitational energy within the horizon, as the …

Mathematical expressions for quantum fluctuations of energy for different energy-momentum tensors

R Singh - arXiv preprint arXiv:2109.11068, 2021 - arxiv.org
Expressions for the quantum fluctuations of energy density have been derived for the
subsystems consisting of hot relativistic gas of particles with spin-$\frac {1}{2} $ and mass …

A compact formula for the quantum fluctuations of energy

R Singh - arXiv preprint arXiv:2110.02727, 2021 - arxiv.org
A formula to calculate the quantum fluctuations of energy in small subsystems of a hot and
relativistic gas is derived. We find an increase in fluctuations for subsystems of small sizes …

O Modelo de inflação: progressos e desafios

LL Graef - Cadernos de Astronomia, 2023 - periodicos.ufes.br
Após o desenvolvimento do Modelo Padrão da Cosmologia, o Modelo do Big Bang, ao que
tudo indicava, havia-se construído uma teoria satisfatória capaz de descrever a evolução do …