Cycles of time-Penrose says his cyclic cosmology obeys thermodynamics.

Thread starter marcus
Start date Sep 9, 2010
Tags

Cosmology Cycles Cyclic Thermodynamics

In summary: So, according to this theory, the universe will eventually come back to a point where everything is a photon and there is no difference between the past and future.In summary, Roger Penrose has devised a cyclic cosmology which he sees as not violating the second law of thermodynamics. There are several online videos of him lecturing about it. He argues that the conformal geometry is scale-less and that all matter decays. He also argues that clocks at the big bang cannot exist.

Sep 30, 2012

Naty1

my earlier post:

Turns out the radio show interview is a simplified verson from Marucs first post:

Maybe I spoke too soon...

One thing I don't recall being discussed in our threads is dark matter and the Higgs field. In his radio interview he says a requirement is that dark matter disappears and seems to hypothesize it reappears when the Higgs field does...

AH HA: does a conformal geometry say anything about the demise of the Higgs field... which provides mass to particles?

<h2>1. What is Penrose's cyclic cosmology?</h2><p>Penrose's cyclic cosmology is a theory proposed by physicist Roger Penrose that suggests the universe goes through an infinite number of cycles, each beginning with a big bang and ending with a big crunch. This theory is based on the concept of conformal cyclic cosmology, which states that the universe has no beginning or end, but rather goes through cycles of expansion and contraction.</p><h2>2. How does Penrose's cyclic cosmology obey thermodynamics?</h2><p>Penrose's cyclic cosmology obeys thermodynamics by following the second law of thermodynamics, which states that the total entropy (disorder) of a closed system always increases over time. In each cycle, the universe goes through a period of expansion, which increases the entropy, and a period of contraction, which decreases the entropy. This maintains the overall increase of entropy over time, in accordance with the second law.</p><h2>3. What evidence supports Penrose's cyclic cosmology?</h2><p>Currently, there is no direct evidence that supports Penrose's cyclic cosmology. However, this theory is based on mathematical and theoretical models, such as the conformal cyclic cosmology model, which is supported by observations of the cosmic microwave background radiation and the isotropy of the universe.</p><h2>4. How does Penrose's cyclic cosmology differ from the Big Bang theory?</h2><p>The Big Bang theory suggests that the universe began with a singularity and has been expanding ever since, while Penrose's cyclic cosmology proposes that the universe has no beginning and goes through an infinite number of cycles. Additionally, the Big Bang theory does not account for the eventual fate of the universe, while Penrose's cyclic cosmology suggests that the universe will continue to cycle through periods of expansion and contraction.</p><h2>5. What are the implications of Penrose's cyclic cosmology?</h2><p>If Penrose's cyclic cosmology is proven to be true, it would challenge our current understanding of the universe and the concept of time. It would also have implications for the ultimate fate of the universe, as it suggests that the universe will continue to exist indefinitely and go through an infinite number of cycles. Additionally, it could provide a potential solution to the problem of the singularity at the beginning of the universe in the Big Bang theory.</p>

1. What is Penrose's cyclic cosmology?

Penrose's cyclic cosmology is a theory proposed by physicist Roger Penrose that suggests the universe goes through an infinite number of cycles, each beginning with a big bang and ending with a big crunch. This theory is based on the concept of conformal cyclic cosmology, which states that the universe has no beginning or end, but rather goes through cycles of expansion and contraction.

2. How does Penrose's cyclic cosmology obey thermodynamics?

Penrose's cyclic cosmology obeys thermodynamics by following the second law of thermodynamics, which states that the total entropy (disorder) of a closed system always increases over time. In each cycle, the universe goes through a period of expansion, which increases the entropy, and a period of contraction, which decreases the entropy. This maintains the overall increase of entropy over time, in accordance with the second law.

3. What evidence supports Penrose's cyclic cosmology?

Currently, there is no direct evidence that supports Penrose's cyclic cosmology. However, this theory is based on mathematical and theoretical models, such as the conformal cyclic cosmology model, which is supported by observations of the cosmic microwave background radiation and the isotropy of the universe.

4. How does Penrose's cyclic cosmology differ from the Big Bang theory?

The Big Bang theory suggests that the universe began with a singularity and has been expanding ever since, while Penrose's cyclic cosmology proposes that the universe has no beginning and goes through an infinite number of cycles. Additionally, the Big Bang theory does not account for the eventual fate of the universe, while Penrose's cyclic cosmology suggests that the universe will continue to cycle through periods of expansion and contraction.

5. What are the implications of Penrose's cyclic cosmology?

If Penrose's cyclic cosmology is proven to be true, it would challenge our current understanding of the universe and the concept of time. It would also have implications for the ultimate fate of the universe, as it suggests that the universe will continue to exist indefinitely and go through an infinite number of cycles. Additionally, it could provide a potential solution to the problem of the singularity at the beginning of the universe in the Big Bang theory.