LHC Doomsday Claims: Debunking an Alleged Catastrophe

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Discussion Overview

The discussion centers on the claims regarding potential catastrophic scenarios associated with the Large Hadron Collider (LHC), particularly focusing on the production of strangelets and their alleged ability to trigger a catastrophic "ice-9" reaction that could alter quark structures on Earth. Participants explore the scientific basis of these claims and seek to debunk them.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Exploratory

Main Points Raised

  • One participant expresses skepticism about the new claims regarding strangelets and seeks assistance in debunking them.
  • Another participant provides a definition of strangelets, explaining their hypothetical nature and the conditions under which they might exist, noting that the probability of their creation decreases at higher energies, such as those at the LHC.
  • A participant references previous analyses related to strangelets from the Relativistic Heavy Ion Collider (RHIC) and suggests that these analyses are applicable to the LHC, using the continued existence of the moon as a supporting argument.
  • Another participant humorously points out that the ongoing operation of the LHC since March serves as evidence against the catastrophic claims, reiterating the previous point about the moon's existence.

Areas of Agreement / Disagreement

Participants generally express skepticism about the catastrophic claims regarding strangelets, with some referencing prior analyses that support their position. However, there is no explicit consensus on the validity of the claims made in the article referenced by the original poster.

Contextual Notes

Participants note that the stability of strangelets is dependent on specific conditions, such as temperature and energy levels, which may not be met in the LHC environment. The discussion highlights the complexity of the topic and the need for careful consideration of the underlying physics.

Galteeth
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Ok, so most of us are probably familiar with the micro-black hole fears that were pretty baseless. There is a new angle on the LCH doomsday scenario, involving the production of strangelets, which will allegedly produce a catastrophic "ice-9" reaction, flipping all the quarks on Earth or some such. My money is on this being bogus, but I'm not familiar enough with the science to do a thorough debunking. Any help?

http://www.cerntruth.com/?p=125
 
Physics news on Phys.org
From wikipedia:

Strangelets
Main article: Strangelets

Strangelets are small fragments of strange matter—a hypothetical form of quark matter—that contain roughly equal numbers of up, down, and strange quarks and that are more stable than ordinary nuclei (strangelets would range in size from a few femtometers to a few meters across).[5] If strangelets can actually exist, and if they were produced at the LHC, they could conceivably initiate a runaway fusion process in which all the nuclei in the planet would be converted to strange matter, similar to a strange star.[5]

The probability of the creation of strangelets decreases at higher energies.[5] As the LHC operates at higher energies than the RHIC or the heavy ion programs of the 1980s and 1990s, the LHC is less likely to produce strangelets than its predecessors.[5] Furthermore, models indicate that strangelets are only stable or long-lived at low temperatures. Strangelets are bound at low energies (in the range of 1–10 MeV), while the collisions in the LHC release energies in the range of 14 TeV. The second law of thermodynamics precludes the formation of a cold condensate that is an order of magnitude cooler than the surrounding medium. This can be illustrated by the example of trying to form an ice cube in boiling water.[5]

I was hoping someone could address the specific claims in the "cerntruth" guy's article.
 
Oy vey!

The issue with strangelets have been sufficiently addressed when the brouhaha surrounding RHIC was going on.

http://arxiv.org/abs/hep-ph/9910333

I believe the analysis done there is applicable to the LHC as well. One only needs to look at the fact that the moon still exists.

Zz.
 
Actually, considering that the LHC has been running since March, one only needs to look at the fact that the earth still exists. :wink:
 
ZapperZ said:
Oy vey!

The issue with strangelets have been sufficiently addressed when the brouhaha surrounding RHIC was going on.

http://arxiv.org/abs/hep-ph/9910333

I believe the analysis done there is applicable to the LHC as well. One only needs to look at the fact that the moon still exists.

Zz.
thanks
 

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