2012/03/31 by Andrei Mikhailov · 1 citation
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #BRST quantization #Black Holes and Theoretical Physics #Combinatorics #Dilaton #Gauge theory #Mathematical physics #Mathematics #Noncommutative and Quantum Gravity Theories #Physics #Quantum electrodynamics #Quantum mechanics #String field theory #String theory #Vertex (graph theory) #Worldsheet #hep-th
paper · pdf · doi:10.1007/jhep11(2012)082
LaTeX 40pp; v2: explained the relation to the linear dilaton background (Section 6), changes in Introduction and Abstract
arxiv created 2012/07/24 · openalex publication_date 2012/11/01 · arxiv updated 2015/06/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
In the classical pure spinor worldsheet theory of AdS5xS5 there are some vertex operators which do not correspond to any physical excitations. We study their flat space limit. We find that the BRST operator of the worldsheet theory in flat space-time can be nontrivially deformed without deforming the worldsheet action. Some of these deformations describe the linear dilaton background. But the deformation corresponding to the nonphysical vertex differs from the linear dilaton in not being worldsheet parity even. The nonphysically deformed worldsheet theory has nonzero beta-function at one loop. This means that the classical Type IIB SUGRA backgrounds are not completely characterized by requiring the BRST symmetry of the classical worldsheet theory; it is also necessary to require the vanishing of the one-loop beta-function.