If one starts from higher dimensional spacetime than four, it is necessary to obtain an effective four dimensional (4D) theory by hiding the extra dimensions. The idea is that, if these extra dimensions are small enough, the experiments performed so far in four dimensions could not have probed the such space.
|Title of host publication||Lecture Notes in Physics|
|Publisher||Springer Science and Business Media Deutschland GmbH|
|Number of pages||36|
|State||Published - 2020|
|Name||Lecture Notes in Physics|