In the conventional, or field theoretical, effective theory approach, we have been content with obtaining the spectrum, and constructed low energy Lagrangian guided by symmetry and naturalness. Since we have the first principle of string theory, we can in principle perform more detailed calculations. It turns out that many "stringy" effects can enhance or suppress the interaction.
|Title of host publication||Quarks and Leptons From Orbifolded Superstring|
|Number of pages||32|
|State||Published - 2006|
|Name||Lecture Notes in Physics|