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Title: Causality and Composite Structure

In this talk, we discuss the question of whether a composite structure of elementary particles, with a length scale 1/{lambda}, can leave observable effects of non-locality and causality violation at higher energies (but {<=}{lambda}); employing a model-independent approach based on Bogoliubov-Shirkov formulation of causality. We formulate a condition which must be fulfilled for the derived theory to be causal, if the fundamental theory is so; and analyze it to exhibit possibilities which fulfil and which violate the condition. We comment on how causality violating amplitudes can arise.
Authors:
 [1]
  1. Department of Physics, I.I.T. Kanpur, Kanpur 208016 (India)
Publication Date:
OSTI Identifier:
21035974
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 939; Journal Issue: 1; Conference: International workshop on theoretical high energy physics, Roorkee (India), 15-20 Mar 2007; Other Information: DOI: 10.1063/1.2803824; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; CAUSALITY; CHIRALITY; PARTICLE STRUCTURE; S MATRIX; STANDARD MODEL