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- W4300452608 abstract "String theory is canonically accompanied with a space-time interpretation which determines S-matrix-like observables, and connects to the standard physics at low energies in the guise of local effective field theory. Recently, we have introduced a reformulation of string theory which does not rely on an {it a priori} space-time interpretation or a pre-assumption of locality. This hlt{metastring theory} is formulated in such a way that stringy symmetries (such as T-duality) are realized linearly. In this paper, we study metastring theory on a flat background and develop a variety of technical and interpretational ideas. These include a formulation of the moduli space of Lorentzian worldsheets, a careful study of the symplectic structure and consequently consistent closed and open boundary conditions, and the string spectrum and operator algebra. What emerges from these studies is a new quantum notion of space-time that we refer to as a quantum Lagrangian or equivalently a hlt{modular space-time}. This concept embodies the standard tenets of quantum theory and implements in a precise way a notion of {relative locality}. The usual string backgrounds (non-compact space-time along with some toroidally compactified spatial directions) are obtained from modular space-time by a limiting procedure that can be thought of as a correspondence limit." @default.
- W4300452608 created "2022-10-03" @default.
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- W4300452608 date "2015-02-27" @default.
- W4300452608 modified "2023-09-26" @default.
- W4300452608 title "Metastring Theory and Modular Space-time" @default.
- W4300452608 doi "https://doi.org/10.48550/arxiv.1502.08005" @default.
- W4300452608 hasPublicationYear "2015" @default.
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