Talk detail

Participant	Hayward, Sean
Institution	Shanghai Normal University - 100 Guilin Road - Shanghai - Shanghai - China

Session	ST3	Accepted		Order	Time
Talk	Oral abstract	Title	Pipes and drums
Co-authors
Abstract	Spatial surfaces with cylindrical or toroidal topology are considered as possible fundamental objects. There are two basic length scales, circumference C and (specific) length L. For C=0 they reduce to strings, respectively open or closed. For L=0 they reduce to closed strings, thus suggesting a possible duality between the two limits, and two potentially inequivalent ways to take the particle limit C=0=L. For L>C they resemble pipes. For L<C the tori resemble drums. One may consider fields propagating either on, inside or outside the surfaces, or a combination, with the possibility of interactions. A more general classification is suggested, based on the dimension of the submanifold, 3D, 2D or 1D in the case of fields on the submanifold, or for fields propagating externally or internally. This is analogous to the Hornbostel-Sachs classification of musical instruments into ideophones (3D), membranophones (2D), chordophones (1D) and (free and non-free) aerophones.