Bader, Philipp Karl HeinzFischer, U.R.2016-05-062016-05-062013-02-281050-2947https://riunet.upv.es/handle/10251/63729We consider spherically trapped Bose gases in three dimensions with contact interactions and investigate whether the Bose-Einstein condensate at zero temperature is stable against macroscopic fragmentation into a small number of mutually incoherent pieces. Our results are expressed in terms of a dimensionless interaction measure proportional to the Thomas-Fermi parameter. It is shown that while three-dimensional condensates are inherently much more stable against macroscopic fragmentation than their quasi-one-and quasi-two-dimensional counterparts, they fragment at a sufficiently large value of the dimensionless interaction measure, which we determine both fully numerically and semianalytically from a continuum limit of large particle numbersReserva de todos los derechosCondensed MatterQuantum GasesArtículo10.1103/PhysRevA.87.023632Abierto