Regge Theory vs Lattice QCD: Understanding Difficulties

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Discussion Overview

The discussion revolves around the comparison between Regge theory and lattice QCD, focusing on the challenges and difficulties associated with each approach in making predictions, particularly in the context of non-perturbative quantum chromodynamics (QCD).

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant expresses difficulty in understanding how S-Matrix theory, based on logical and common sense assumptions, can make valid predictions in non-perturbative QCD while lattice QCD does not seem to do so.
  • Another participant challenges the claim that lattice QCD is not making valid predictions and requests clarification on the specific problems being referenced.
  • A third participant reiterates the request for specificity regarding the criticisms of lattice QCD and provides a link to a related paper for further consideration.
  • A subsequent reply questions the relevance of the provided review to lattice QCD, asking for specific references within the document that pertain to the discussion.

Areas of Agreement / Disagreement

Participants do not appear to agree on the validity of predictions made by lattice QCD, with some questioning the initial claim while others seem to support it. The discussion remains unresolved regarding the effectiveness of lattice QCD compared to Regge theory.

Contextual Notes

The discussion highlights a lack of clarity regarding the specific predictions and contexts in which lattice QCD is said to fail, as well as the relevance of external references to the topic at hand.

Anashim
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It is very difficult for me to understand that a theory based only in "very logical" and "common sense" assumptions (S-Matrix theory, prestring era) makes (some) valid predictions in non-p QCD, while lattice QCD does not. Could the experts comment on this subjet?

P.S.: Not interested in string theory
 
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Why do you say lattice QCD is not making valid predictions? Could you make the problem more specific?
 
As far as I can tell, this review is not talking about lattice QCD at all (I searched the pdf for "lattice" and skimmed the contents)? Can you point to a specific paragraph or plot you are talking about?
 

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