↓

Dr. Oleg Markin, a tutor

Answers in fundamental physics

Dr. Oleg  Markin, a tutor
Home Menu ↓
Skip to primary content
Skip to secondary content
  • Introduction
  • Tools
    • Mathematics
  • Subject
  • Methods
  • Opportunities
    • Discoveries
    • Illusions
    • Hypotheses
    • Experiments
  • Particles
  • Universe
    • Space-time
    • Cosmos
    • Evolution
  • in Russian
Home→Tags dark energy

Tag Archives: dark energy

How to calculate rate of the universe expansion?

Posted on July 23, 2021 by admin
Variation of different contributions to the universe's energy

The zero-zero component of the Einstein’s equations for gravity with the metric of the expending universe is called the Friedman equation. We use this differential equation to calculate the behavior of the expending space. The equation includes two unknown functions … Continue reading →

How is the expansion of the universe going to end?

Posted on August 30, 2014 by admin
Possible future of the expanding universe

  The expansion rate of the universe is governed by three major factors: its matter density, the curvature of the three-dimensional space and the density of invisible energy called dark energy of unknown nature. With the expansion, the density of … Continue reading →

What is the most realistic explanation for the dark energy?

Posted on August 28, 2014 by admin
Dark energy of the quintessence field

On the presence of energy that is not related to the matter around The existence of so-called dark energy not only follows from cosmological observations, but also arises theoretically. This could appear to be the energy of some quantum field … Continue reading →

What is called dark energy of the universe?

Posted on August 28, 2014 by admin
Dark energy is everywhere in the universe

Ignoring the overall expansion of the universe Data of observations suggest that known types of a matter make up only about five percent in the universe. Another 20% of the mass of the universe, which are concentrated in galaxies and … Continue reading →

What have scientists already found in space?

Posted on August 28, 2014 by admin
Quasars are much brighter than stars

Here and there the matter is present in the surrounding emptiness… In space, there are observed free elementary particles, clouds of strongly ionized hydrogen in the intergalactic space, and stars in galaxies and clusters of galaxies. There ale also unusual … Continue reading →

What is the role of quantum field theory in physical cosmology?

Posted on August 24, 2014 by admin
Hypothetical object -- a ball of condensate of a quantum field

On the continuous movement of elementary particle fields in the universe When the quantum theory of the electromagnetic field has been extended to describe the strong and weak interactions, the fields of particles not yet known at that time were … Continue reading →

Can we say there is nothing but the well-known today in the universe?

Posted on August 24, 2014 by admin
The surface of a hypothetical cosmic non-topological soliton of the quantum field condensate

On the formation of particles from the quantum field condensate Space observations of recent decades led scientists to the conclusion about the existence of dark matter and dark energy, the nature of which is not clear. Theoretical physics gives an … Continue reading →

Login

  • Register
  • Log in

Recent Posts

  • What is the friction force from? January 11, 2022
  • The general considerations, are they productive? September 29, 2021
  • Which nuclei are primordial? August 22, 2021
  • How do we measure cosmic parameters? August 11, 2021
  • What is a supernova explosion? August 4, 2021

Categories

  • Cosmic objects (14)
  • Discoveries and motivation (15)
  • Elementary particles (12)
  • Evolution of the universe (14)
  • Experiment and observation (7)
  • Illusions in physics (18)
  • Mathematics for physics (5)
  • Methods of research (20)
  • Miscellaneous (2)
  • Space of the universe (7)
  • Structure of physics (16)
  • The leading edge (5)
© 2022 - Dr. Oleg Markin, a tutor Proudly powered by WordPress  Aspen by WP Weaver
↑