961 citations · 4.3k across the 73 of their papers we have counts for
73 papers
Wavefunction Collapse in String Theory
Nissan Itzhaki
One of the most intriguing proposals for wavefunction collapse is the Diosi Penrose model, in which collapse is driven by stochastic fluctuations of the Newtonian potential. We arg…
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…
Is the horizon of an eternal black hole really smooth?
Nissan Itzhaki
We point out that in many eternal black holes, including a Schwarzschild eternal black hole and an eternal black hole in , instant folded strings are created in the past wed…
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…