Oscillating universe and harmonic oscillator

In summary, the conversation discusses the possibility of the universe undergoing simple harmonic oscillation between a Big Bang and a Big Crunch. It is suggested that the current acceleration of the universe's expansion is removing potential energy, possibly through dark energy. The conversation also raises questions about whether this cycle has occurred before and the role of gravity and dark energy in this process.
  • #1
kurious
641
0
If the universe oscillates between a Big Bang and a Big crunch,
can two particles at opposite ends of it, be considered to be
undergoing simple harmonic oscillation?
If the potential energy of the oscillator is given by G m1 m2 /r and
m1 is the mass of the universe,10^52 kg,r = 10^26 metres - the current
size of the universe -then since the PE of a simple harmonic
oscillator is given by
PE = 1/2 k x^2, the force constant k becomes 10 ^ -37 m2.
using frequency of oscillator = ( k / m2 ) ^1/2,
frequency = ( 10^ -37m2 / m2 )^ 1/2 = 10^ - 18.5 per second.
In other words the universe oscillates every 10 ^ 18.5 seconds - about
its current age!
Since the two particles of a simple harmonic oscillator accelerate
when potential energy gets converted into kinetic energy, the current
acceleration of the expansion of the universe is removing potential
energy from the universe.So dark energy removes potential energy from
the universe.
It is probably doing this by taking energy from gravitons.
 
Space news on Phys.org
  • #2
Perhaps the first consideration is whether or not the universe goes through a "big bang" - "big crunch" cycle.
It is assumed that this might occur in our present condition, but, has this occurred before? That is, are we experiencing a cyclic event in "mid-term", or are we in the first cycle of this continuing scenario.
Is evidence either way even possible, given the totality of expression?
 
  • #3
Kurious, in a word, yes.

I think dark energy is depriving gravity of carring out its function. In other words, the energy either becomes involved in gravity or dark energy. When radiation becomes dark energy, it reduces the potential available for gravitation.

Just my thoughts.
 

What is an oscillating universe?

An oscillating universe is a theoretical model in which the universe undergoes a cycle of expansion and contraction, repeating indefinitely. This is based on the idea that the universe is finite and subject to the laws of physics, including gravity. It is also known as the "cyclic universe" or "big bounce" theory.

How does the concept of a harmonic oscillator relate to the oscillating universe?

In the oscillating universe model, the expansion and contraction of the universe can be thought of as a harmonic oscillator, similar to a pendulum or a spring. The universe expands due to the force of gravity, but eventually reaches a maximum size and begins to contract again, much like a pendulum reaches its highest point and then swings back.

What evidence supports the idea of an oscillating universe?

Currently, there is no conclusive evidence for an oscillating universe. However, some scientists point to the cosmic microwave background radiation, the leftover radiation from the Big Bang, as a potential indication of a previous cycle of expansion and contraction. Other evidence includes the observed distribution of matter in the universe and the potential for a closed, finite universe.

What are some potential implications of an oscillating universe?

If the oscillating universe model is true, it could have implications for our understanding of the beginning and end of the universe. It would also suggest that the laws of physics are cyclical, rather than constant, and that the universe has existed indefinitely in the past and will continue to do so in the future.

Are there any alternative theories to the oscillating universe model?

Yes, there are alternative theories to the oscillating universe model. One popular alternative is the "heat death" theory, which suggests that the universe will continue to expand and eventually reach a state of maximum entropy, in which all energy is evenly distributed and nothing can happen. Another theory is the "big freeze" model, in which the universe will continue to expand until all matter and energy are too spread out to sustain life.

Similar threads

Replies
5
Views
1K
  • Introductory Physics Homework Help
Replies
13
Views
632
  • Quantum Physics
Replies
2
Views
996
Replies
2
Views
710
  • Introductory Physics Homework Help
Replies
5
Views
539
Replies
19
Views
549
Replies
8
Views
818
Replies
7
Views
646
  • Quantum Physics
Replies
4
Views
557
  • Atomic and Condensed Matter
Replies
14
Views
2K
Back
Top