43 research outputs found
Space-time non-commutativity tends to create bound states
We study the spectrum of fluctuations about static solutions in 1+1
dimensional non-commutative scalar field models. In the case of soliton
solutions non-commutativity leads to creation of new bound states. In the case
of static singular solutions an infinite tower of bound states is produced
whose spectrum has a striking similarity to the spectrum of confined quark
states.Comment: revtex4, 6 pages, v2: a reference adde
A fractal model for intergranular fractures in nanocrystals
Consiglio Nazionale delle Ricerche (CNR). Biblioteca Centrale / CNR - Consiglio Nazionale delle RichercheSIGLEITItal