Weak Scale in Heterotic String
نویسنده
چکیده
We investigate the possibility of lowering the string scale in four dimensional heterotic models possessing a non-perturbative extension of the gauge group. We find that at the strong coupling it is possible to have an arbitrarily low string scale, together with a normal value of the “Standard Model” gauge coupling. The string scale is set by the coupling of the non-perturbative extension of the gauge group, that, for low string mass, plays the role of global symmetry. † Research partially supported by the EEC under the contract TMR-ERBFMRX-CT96-0045. e-mail: [email protected]
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تاریخ انتشار 2000