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Gauge Gravity and the Unification of Natural Forces

Liu, Chuang (2001) Gauge Gravity and the Unification of Natural Forces. UNSPECIFIED. (Unpublished)

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Abstract

Physics seems to tell us that there are four fundamental force-fields in nature: the gravitational, the electromagnetic, the weak, and the strong force-field (or interactions). But it also seems to tell us that gravity cannot possibly be a force-field, in the same sense as the other three are. And yet the search for a grand unification of all four force-fields is today one of the hottest pursuits in it. Is this the result of a simple confusion? This paper aims at clarifying this situation by doing the following: (i) examine the conception of unification of force-fields; (ii) review the gauge-field program in view of the above examination; (iii) review the various attempts at a gauge theory of gravity; and (iv) articulate the nature of 'gauging' and using it to explain the difference between gravity and the other force-fields.


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Item Type: Other
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Liu, Chuang
Keywords: gauge field, gauge symmetry, Yang-Mills fields, general relativity, fundamental force-fields, Einstein-Cartan theory
Subjects: Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics
Specific Sciences > Physics > Quantum Field Theory
Specific Sciences > Physics > Relativity Theory
Depositing User: Chuang Liu
Date Deposited: 14 Aug 2001
Last Modified: 07 Oct 2010 15:10
Item ID: 364
Public Domain: No
URI: http://philsci-archive.pitt.edu/id/eprint/364

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