Collective Physics in the Closed Bosonic String
Apr, 199011 pages
Published in:
- Phys.Rev.D 42 (1990) 1289-1292
Report number:
- IUHET-185,
- CCNY-HEP-90/8
Citations per year
Abstract: (APS)
A second-quantized analysis is performed to examine many-body phenomena in closed bosonic strings. The covariant nonpolynomial closed-string field theory is developed in terms of particle fields and shown to contain interactions triggering a nonperturbative condensation of the tachyon field. We study the possibility that the higher-dimensional Lorentz symmetry spontaneously breaks. We show that the theory has asymptotic freedom due to a tree-level running coupling. The spectrum of states in the nonperturbative ground state is radically changed relative to the free case; in particular, there is no massless graviton. Similar effects are anticipated in any nonperturbative vacuum.- field theory: string
- string model: boson
- quantization: 2
- vacuum state: nonperturbative
- effective Lagrangian
- symmetry: Lorentz
- spontaneous symmetry breaking
- asymptotic freedom
- collective phenomena
- condensation: tachyon
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