pith. machine review for the scientific record. sign in

arxiv: 1009.3277 · v2 · submitted 2010-09-16 · ✦ hep-th · gr-qc

Recognition: unknown

Dynamical Cobordisms in General Relativity and String Theory

Simeon Hellerman , Matthew Kleban
Authors on Pith no claims yet
classification ✦ hep-th gr-qc
keywords stringsolutionstheoriesinterpolatephysicalregionsalpha-primeasymptote
0
0 comments X
read the original abstract

We describe a class of time-dependent solutions in string- or M-theory that are exact with respect to alpha-prime and curvature corrections and interpolate in physical space between regions in which the low energy physics is well-approximated by different string theories and string compactifications. The regions are connected by expanding "domain walls" but are not separated by causal horizons, and physical excitations can propagate between them. As specific examples we construct solutions that interpolate between oriented and unoriented string theories, and also between type II and heterotic theories. Our solutions can be weakly curved and under perturbative control everywhere and can asymptote to supersymmetric at late times.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Sharpened Dynamical Cobordism

    hep-th 2026-05 unverdicted novelty 7.0

    Sharpened Dynamical Cobordism ties the allowed range of critical exponent δ to theory structure ξ, flagging obstructions from non-trivial cobordism charges that require new degrees of freedom.

  2. Ho\v{r}ava-Witten theory on ${\mathbf{S}}^1\vee{\mathbf{S}}^1$ as type 0 orientifold

    hep-th 2026-03 unverdicted novelty 7.0

    Hořava-Witten theory on S¹∨S¹ is dual to a type 0B orientifold with SO(16)^4 gauge group, explaining gauge group doubling via the geometry's junction and revealing two variants from E8 wall orientations.

  3. The Art of Branching: Cobordism Junctions of 10d String Theories

    hep-th 2026-03 conditional novelty 7.0

    Explicit worldsheet constructions of 9d junctions joining several 10d string theories via generalized RG flow interpolations and closed tachyon condensation, providing dynamical realizations of multi-theory cobordisms.

  4. Heterotic Ouroboros

    hep-th 2026-04 unverdicted novelty 5.0

    M-theory on S1 vee S1 with quotients and type I' mechanisms reproduces the light spectra and gauge groups of 10D heterotic theories, with evidence for junctions among them.

  5. Heterotic Ouroboros

    hep-th 2026-04 unverdicted novelty 5.0

    A consistent set of rules from M-theory on S¹ ∨ S¹ combined with type I' enhancements reproduces the light spectra, gauge groups, and global structure of ten-dimensional heterotic string theories, with indications of ...