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Exact Solutions and Scalar Fields in Gravity - Instituto Avanzado de ...

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HIGGS–FIELD AND GRAVITY<br />

He<strong>in</strong>z Dehnen *<br />

Physics Department. University of Konstanz<br />

Box M 677. D-78457 Konstanz. Germany<br />

Abstract The only scalar field of concrete physical importance is the Higgs-field of<br />

the elementary particle physics, especially after the possible <strong>de</strong>tection<br />

of the Higgs-particle with a mass of 114 GeV at CERN some weeks<br />

ago <strong>in</strong> September 2000. Therefore our first question is: Which k<strong>in</strong>d<br />

of <strong>in</strong>teraction is mediated by the exchange of the Higgs–particle? This<br />

question can be answered classically by consi<strong>de</strong>r<strong>in</strong>g the field equations<br />

follow<strong>in</strong>g from the Lagrangian of the electro-weak <strong>in</strong>teraction.<br />

Keywords: Higgs field, gravity, gauge theories.<br />

1. HIGGS–FIELD GRAVITY<br />

Without any <strong>de</strong>tails the general structure of the electro-weak Lagrangian<br />

is given by<br />

are real parameters of the Higgs-potential). Here<strong>in</strong><br />

represents the covariant <strong>de</strong>rivative with respect to the localized group<br />

SU(2) × U(1)<br />

gauge coupl<strong>in</strong>g constants, gauge potentials, generators<br />

of the group SU(2) × U(1)) <strong>and</strong> the gauge field strength is <strong>de</strong>term<strong>in</strong>ed<br />

by its commutator accord<strong>in</strong>g to<br />

furthermore is the Yukawa coupl<strong>in</strong>g-matrix of the Yukawa coupl<strong>in</strong>g<br />

term for generation of the fermionic masses is a real valued constant,<br />

the only non-dimensionless constant is with the dimension of<br />

*E–mail: He<strong>in</strong>z.Dehnen@uni-konstanz.<strong>de</strong><br />

<strong>Exact</strong> <strong>Solutions</strong> <strong>and</strong> <strong>Scalar</strong> <strong>Fields</strong> <strong>in</strong> <strong>Gravity</strong>: Recent Developments<br />

Edited by Macias et al., Kluwer Aca<strong>de</strong>mic/Plenum Publishers, New York, 2001 101

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