28.11.2012 Views

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

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

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

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Higgs–Field <strong>and</strong> <strong>Gravity</strong> 103<br />

is <strong>de</strong>f<strong>in</strong>ed by <strong>and</strong> the non–trivial Higgs–field<br />

condition<br />

which we resolve as<br />

with the isosp<strong>in</strong>orial unit vector N:<br />

The general Higgs–field is different form (11) by a local unitary transformation:<br />

with<br />

where represents the real valued excited Higgs-field normalized with<br />

respect to the ground-state value Now we use the possibility of a<br />

unitary gauge transformation which is <strong>in</strong>verse to (13), so that Goldstone–<br />

bosons are avoi<strong>de</strong>d <strong>and</strong> (13) goes over <strong>in</strong><br />

In the follow<strong>in</strong>g all calculations are performed <strong>in</strong> the gauge (15) (unitary<br />

gauge).<br />

Us<strong>in</strong>g (11) up to (15) the field equations (3) through (5) take the form<br />

where<strong>in</strong><br />

is the mass–matrix of the matter-fields

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!