11 papers · 1 filter
(K)not machine learning
Jessica Craven, Mark Hughes, Vishnu Jejjala +1
We review recent efforts to machine learn relations between knot invariants. Because these knot invariants have meaning in physics, we explore aspects of Chern-Simons theory and hi…
Complexity Growth in Integrable and Chaotic Models
Vijay Balasubramanian, Matthew DeCross, Arjun Kar +2
We use the SYK family of models with Majorana fermions to study the complexity of time evolution, formulated as the shortest geodesic length on the unitary group manifold betwe…
Disentangling a Deep Learned Volume Formula
Jessica Craven, Vishnu Jejjala, Arjun Kar
We present a simple phenomenological formula which approximates the hyperbolic volume of a knot using only a single evaluation of its Jones polynomial at a root of unity. The avera…
Islands in de Sitter space
Vijay Balasubramanian, Arjun Kar, Tomonori Ugajin
We consider black holes in 2d de Sitter JT gravity coupled to a CFT, and entangled with matter in a disjoint non-gravitating universe. Tracing out the entangling matter leaves the…
Entanglement between two disjoint universes
Vijay Balasubramanian, Arjun Kar, Tomonori Ugajin
We use the replica method to compute the entanglement entropy of a universe without gravity entangled in a thermofield-double-like state with a disjoint gravitating universe. Inclu…
Spin structures and baby universes
Vijay Balasubramanian, Arjun Kar, Simon F. Ross +1
We extend a 2d topological model of the gravitational path integral to include sums over spin structure, corresponding to Neveu-Schwarz (NS) or Ramond (R) boundary conditions for f…