Is There a 5th Force in String Theory and What Does it Mean for Space?

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Discussion Overview

The discussion revolves around the concept of a "5th force" in string theory, specifically referencing the Higgs field and its implications for the nature of space. Participants explore the theoretical underpinnings of the Higgs field, its role in particle mass, and the status of the Higgs boson as a hypothetical particle.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants mention that the "5th force" in string theory refers to the Higgs field, which is proposed to permeate space.
  • One participant explains that the Higgs boson is the carrier particle of the Higgs field and discusses its role in giving mass to particles through the Higgs mechanism.
  • There is a discussion about the nature of the Higgs field, with participants questioning and clarifying what it means for the field to "permeate space."
  • Another participant emphasizes that the Higgs field is considered to be present everywhere, even in regions devoid of matter or energy.

Areas of Agreement / Disagreement

Participants generally agree on the identification of the Higgs field as the "5th force," but there are questions and clarifications regarding its implications and definitions, indicating some uncertainty in understanding.

Contextual Notes

The discussion includes references to the Higgs mechanism and the status of the Higgs boson as a hypothetical particle, with no consensus on its existence as it remains unproven at the time of the discussion.

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I read in Elegant Universe there is a 5th force predicted by the string theory. Anybody know what it is ?
 
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The "5th force" proposed in the Elegant Universe is the Higgs field, which is thought to permeate space. The Higgs boson is the carrier particle of the Higgs field. This hypothesis says that the Higgs field is what gives particles their mass through the Higgs mechanism.

The Higgs particle is as yet a hypothetical particle invoked to explain why the carriers of the electroweak force (the W and Z bosons) have mass. Quantum electrodynamics requires the photon to have zero mass (which is good because indeed it does), but early attempts to develop and electroweak theory also required the bosons to be massless, (which is bad because then they would be as abundant as the photon in the universe, which indeed they are not). Peter Higgs and two Belgian researchers (who worked independently of Higgs) come across the same idea for settling the puzzle in 1964. If there is an otherwise undetectable field filling the universe (now called the Higgs field), it could have associated with it a previously unknown kind of boson, the Higgs particle, which has mass. This would allow any photon-like particle to become massive by swallowing up a Higgs boson. It is possible, but not proven, that all-massive particles get their mass this way.

As of now, the Higgs boson has yet to be proven to exist. Scientists say that the Large Hadron Collider (LHC) at CERN, which opens in 2007, will be able to prove or disprove the existence of the Higgs particle.

http://en.wikipedia.org/wiki/Higgs_field
http://hepwww.ph.qmw.ac.uk/epp/higgs1.html
http://www.physlink.com/Education/AskExperts/ae304.cfm
 
Last edited by a moderator:
Sempiternity said:
The "5th force" proposed in the Elegant Universe is the Higgs field, which is thought to permeate space. The Higgs boson is the carrier particle of the Higgs field.

What do you mean by permeate space?
 
<<<GUILLE>>> said:
What do you mean by permeate space?

It means the Higgs field is literally everywhere (including the places where there's no matter or energy).
 

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