Charting the landscape of supercritical string theory

Hellerman, Simeon; Swanson, Ian

doi:10.48550/arxiv.0705.0980

Cited by 14 publications

(34 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, string theories also do not need to be critical; the dimension of the target space can exceed d = 10. There is a whole landscape of supercritical string theories, connected to the more familiar critical landscape [51]. Noncritical string theories do not have conventional time-independent vacuum solutions, but in a cosmological setting, this is not necessarily a problem.…”

Section: Noncriticalmentioning

confidence: 99%

Lectures on Constructing String Vacua

2008

View full text Add to dashboard Cite

Section: Noncriticalmentioning

confidence: 99%

Lectures on Constructing String Vacua

2008

View full text Add to dashboard Cite

“…It is interesting to compare our findings to the case of closed string tachyon condensation. Purely light-like closed string tachyon solutions are stable against small perturbations of the initial conditions (in the sense that small perturbations of the initial conditions lead to qualitatively similar behaviour at late times) [45,46]. On the other hand, [47] discussed the possibility of qualitative change of the solution under finite changes of the initial conditions.…”

Section: The Island Of Stabilitymentioning

confidence: 99%

Dynamics and stability of light-like tachyon condensation

Barnaby

Mulryne

Nunes

et al. 2009

J. High Energy Phys.

View full text Add to dashboard Cite

Recently, Hellerman and Schnabl considered the dynamics of unstable D-branes in the background of a linear dilaton. Remarkably, they were able to construct light-like tachyon solutions which interpolate smoothly between the perturbative and nonperturbative vacua, without undergoing the wild oscillations that plague time-like solutions. In their analysis, however, the full structure of the initial value problem for the nonlocal dynamical equations was not considered. In this paper, therefore, we reexamine the nonlinear dynamics of lightlike tachyon condensation using a combination of numerical and analytical techniques. We find that for the p-adic string the monotonic behaviour obtained previously relied on a special choice of initial conditions near the unstable maximum. For generic initial conditions the wild oscillations come back to haunt us. Interestingly, we find an "island of stability" in initial condition space that leads to sensible evolution at late times. For the string field theory case, on the other hand, we find that the evolution is completely stable for generic choices of initial data. This provides an explicit example of a string theoretic system that admits infinitely many initial data but is nevertheless nonperturbatively stable. Qualitatively similar dynamics are obtained in nonlocal cosmologies where the Hubble damping plays a role very analogous to the dilaton gradient.

show abstract

“…10 Finally as mentioned before, let us briefly study another possible choice of the analytic continuation: β > 1, where we do not see any initial singularity as T → −∞. In this case, the quantum particle creation (12) depends sensitively on the value of β…”

Section: Large Quantum Back Reactionmentioning

confidence: 83%

“…For example, one may pose a question: since the structure of the higher homotopy group (or homology group) is different between the D-dual pairs (i.e. π n (M h ) = π n (T 2h ) in general), what happens to 1 More general arguments for the dimensional change in supercritical string theories can be found in [9,10,11,12] 2 See e.g. [13] for a recent argument on the relationship between the time-dependence and the renormalization group flow the charges of higher dimensional D-branes?…”

Section: Introductionmentioning

confidence: 99%

D-dualized D-brane

Nakayama

2007

J. High Energy Phys.

View full text Add to dashboard Cite

We further investigate the dimensional duality (D-duality) proposed in arXiv:0705.0550 by mainly focusing on the properties of D-branes in this background. We derive the world-sheet correspondence of static D-branes, and discuss the fate of non-static D-branes from the world-sheet viewpoint. The quantum string production with or without D-branes is also studied from the time-like Liouville theory. We find that the closed string production from the background is much larger than that from D-branes decaying into nothing.

show abstract

Charting the landscape of supercritical string theory

Cited by 14 publications

References 0 publications

Lectures on Constructing String Vacua

Lectures on Constructing String Vacua

Dynamics and stability of light-like tachyon condensation

D-dualized D-brane

Contact Info

Product

Resources

About