37 citations · 59 across the 6 of their papers we have counts for
6 papers
Instant Folded Strings, Dark Energy and a Cyclic Bouncing Universe
Nissan Itzhaki, Uri Peleg, Paul J. Steinhardt
We present a wholly self-consistent, complete cyclic bouncing cosmology based on components drawn from string theory and constructed in a way that is under perturbative control thr…
Instant Cosmology
Nissan Itzhaki, Uri Peleg
Instant Folded Strings (IFSs) are unconventional light strings that emerge when the string coupling increases with time. A particularly intriguing property of IFSs, especially rele…
When Strings Surprise
N. Itzhaki, U. Peleg
We argue that on-shell excitations with large negative energies are created rapidly when the string coupling increases with time. This does not indicate an inconsistency in string…
A Worldsheet Description of Instant Folded Strings
Akikazu Hashimoto, Nissan Itzhaki, Uri Peleg
Time-like linear dilaton backgrounds admit a classical solution that describes a closed folded string that is created at an instant. We refer to such strings as Instant Folded Stri…
Instant Folded Strings and Black Fivebranes
Amit Giveon, Nissan Itzhaki, Uri Peleg
We study the recent claim that black NS5-branes are filled with folded strings. We calculate, in the near-extremal case, the number of folded strings at the black fivebranes interi…
Comment on "Past of a quantum particle revisited"
Uri Peleg, Lev Vaidman
The recent criticism of Vaidman's propsal for the analysis of the past of a particle in the nested interferometer is refuted. It is shown that the definition of the past of the par…