20 citations · 63 across the 12 of their papers we have counts for
12 papers
Wormhole Nucleation via Topological Surgery in Lorentzian Geometry
Alessandro Pisana, Barak Shoshany, Stathis Antoniou +2
We construct a model for the nucleation of a wormhole within a Lorentzian spacetime by employing techniques from topological surgery and Morse theory. In our framework, a 0-surgery…
Warp Drives and Closed Timelike Curves
Barak Shoshany, Ben Snodgrass
It is commonly accepted that superluminal travel may be used to facilitate time travel. This is a purely special-relativistic argument, using the fact that for observers in two fra…
Time Travel Paradoxes and Entangled Timelines
Barak Shoshany, Zipora Stober
For time travel to be consistent with the known laws of physics, the resulting paradoxes must be resolved. It has been suggested that parallel timelines (a.k.a. multiple histories)…
Wormhole Time Machines and Multiple Histories
Barak Shoshany, Jared Wogan
In a previous paper, we showed that a class of time travel paradoxes which cannot be resolved using Novikov's self-consistency conjecture can be resolved by assuming the existence…
A C++17 Thread Pool for High-Performance Scientific Computing
Barak Shoshany
We present a modern C++17-compatible thread pool implementation, built from scratch with high-performance scientific computing in mind. The thread pool is implemented as a single l…
At the Corner of Space and Time
Barak Shoshany
We perform a rigorous piecewise-flat discretization of classical general relativity in the first-order formulation, in both 2+1 and 3+1 dimensions, carefully keeping track of curva…
Time Travel Paradoxes and Multiple Histories
Jacob Hauser, Barak Shoshany
If time travel is possible, it seems to inevitably lead to paradoxes. These include consistency paradoxes, such as the famous grandfather paradox, and bootstrap paradoxes, where so…
Spin Networks and Cosmic Strings in 3+1 Dimensions
Barak Shoshany
Spin networks, the quantum states of discrete geometry in loop quantum gravity, are directed graphs whose links are labeled by irreducible representations of SU(2), or spins. Cosmi…
Lectures on Faster-than-Light Travel and Time Travel
Barak Shoshany
These lecture notes were prepared for a 25-hour course for advanced undergraduate students participating in Perimeter Institute's Undergraduate Summer Program. The lectures cover s…
Dual 2+1D Loop Quantum Gravity on the Edge
Barak Shoshany
In a recent paper, we introduced a new discretization scheme for gravity in 2+1 dimensions. Starting from the continuum theory, this new scheme allowed us to rigorously obtain the…
2+1D Loop Quantum Gravity on the Edge
Laurent Freidel, Florian Girelli, Barak Shoshany
We develop a new perspective on the discretization of the phase space structure of gravity in 2+1 dimensions as a piecewise-flat geometry in 2 spatial dimensions. Starting from a s…
"Thinking Quantum": Lectures on Quantum Theory
Barak Shoshany
We present a conceptually clear introduction to quantum theory, deriving the theory from scratch from the point of view of quantum information, with focus on developing intuition a…