Quantum Computation of Phase Transition in Interacting Scalar Quantum
Field Theory
- URL: http://arxiv.org/abs/2303.02425v1
- Date: Sat, 4 Mar 2023 14:11:37 GMT
- Title: Quantum Computation of Phase Transition in Interacting Scalar Quantum
Field Theory
- Authors: Shane Thompson and George Siopsis
- Abstract summary: It has been demonstrated that the critical point of the phase transition in scalar quantum field theory can be approximated via a Gaussian Effective Potential (GEP)
We perform quantum computations with various lattice sizes and obtain evidence of a transition from a symmetric to a symmetry-broken phase.
We implement the ten-site case on IBM quantum hardware using the Variational Quantum Eigensolver (VQE) algorithm to minimize the GEP.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: It has been demonstrated that the critical point of the phase transition in
scalar quantum field theory with a quartic interaction in one space dimension
can be approximated via a Gaussian Effective Potential (GEP). We discuss how
this critical point can be estimated using quantum hardware. We perform quantum
computations with various lattice sizes and obtain evidence of a transition
from a symmetric to a symmetry-broken phase. We use both discrete- and
continuous-variable quantum computation. We implement the ten-site case on IBM
quantum hardware using the Variational Quantum Eigensolver (VQE) algorithm to
minimize the GEP and identify lattice level-crossings. These are extrapolated
via simulations to find the continuum critical point.
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