TY - JOUR
T1 - Quantum Computation of Scattering in Scalar Quantum Field Theories
JF - Quantum Information and Computation
Y1 - 2014
A1 - Stephen P. Jordan
A1 - Keith S. M. Lee
A1 - John Preskill
AB - Quantum field theory provides the framework for the most fundamental physical theories to be confirmed experimentally, and has enabled predictions of unprecedented precision. However, calculations of physical observables often require great computational complexity and can generally be performed only when the interaction strength is weak. A full understanding of the foundations and rich consequences of quantum field theory remains an outstanding challenge. We develop a quantum algorithm to compute relativistic scattering amplitudes in massive phi-fourth theory in spacetime of four and fewer dimensions. The algorithm runs in a time that is polynomial in the number of particles, their energy, and the desired precision, and applies at both weak and strong coupling. Thus, it offers exponential speedup over existing classical methods at high precision or strong coupling.
VL - 14
U4 - 1014-1080
UR - http://arxiv.org/abs/1112.4833v1
CP - 11-12
J1 - Quantum Information and Computation 14
ER -