| PDF - Published Version (214kB) | |
| PDF - Accepted Version arXiv PDF (19.11.15) (318kB) | |
| PDF - Submitted Version arXiv PDF (08.09.2015) (301kB) |
- URN to cite this document:
- urn:nbn:de:bvb:355-epub-330261
- DOI to cite this document:
- 10.5283/epub.33026
Abstract
We consider the many-body spectra of interacting bosonic quantum fields on a lattice in the semiclassical limit of large particle number N. We show that the many-body density of states can be expressed as a coherent sum over oscillating long-wavelength contributions given by periodic, nonperturbative solutions of the, typically nonlinear, wave equation of the classical (mean-field) limit. To this ...
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