3 papers
quant-ph2026
The Grasshopper Problem on the Sphere
David Llamas, Dmitry Chistikov, Adrian Kent +2
The spherical grasshopper problem is a geometric optimization problem that arises in the context of Bell inequalities and can be interpreted as identifying the best local hidden va…
quant-ph2025
Optimal Local Simulations of a Quantum Singlet
David Llamas, Dmitry Chistikov, Adrian Kent +2
Bell's seminal work showed that no local hidden variable (LHV) model can fully reproduce the quantum correlations of a two-qubit singlet state. His argument and later developments…
math-ph2023
Origin of Symmetry Breaking in the Grasshopper Model
David Llamas, Jaron Kent-Dobias, Kun Chen +2
The planar grasshopper problem, originally introduced in (Goulko & Kent 2017 Proc. R. Soc. A 473, 20170494), is a striking example of a model with long-range isotropic interactions…