• Corpus ID: 219573631

Observing the fate of the false vacuum with a quantum laboratory

  title={Observing the fate of the false vacuum with a quantum laboratory},
  author={Steven A. Abel and Michael Spannowsky},
  journal={arXiv: High Energy Physics - Theory},
We design and implement a quantum laboratory to experimentally observe and study dynamical processes of quantum field theories. Our approach encodes the field theory as an Ising model, which is then solved by a quantum annealer. As a proof-of-concept, we encode a scalar field theory and measure the probability for it to tunnel from the false to the true vacuum for various tunnelling times, vacuum displacements and potential profiles. The results are in accord with those predicted theoretically… 

Fate of the False Vacuum: Finite Temperature, Entropy, and Topological Phase in Quantum Simulations of the Early Universe

Despite being at the heart of the theory of the "Big Bang" and cosmic inflation, the quantum field theory prediction of false vacuum tunneling has not been tested. To address the exponential

Exploring instantons with spin-lattice systems

Instanton processes are present in a variety of quantum field theories relevant to high energy as well as condensed matter physics. While they have led to important theoretical insights and physical

Towards a quantum computing algorithm for helicity amplitudes and parton showers

The interpretation of measurements of high-energy particle collisions relies heavily on the performance of full event generators. By far the largest amount of time to predict the kinematics of

Quantum machine learning for particle physics using a variational quantum classifier

A novel hybrid variational quantum classifier that combines the quantum gradient descent method with steepest gradient descent to optimise the parameters of the network and has a better learning outcome than a classical neural network or a quantum machine learning method trained with a non-quantum optimisation method.

Performance of Domain-Wall Encoding for Quantum Annealing

It is found that a 2000Q quantum annealer with a drastically less connected hardware graph but using the domain-wall encoding can outperform the next-generation Advantage processor if that processor uses one-hot encoding.

A Genetic Quantum Annealing Algorithm

An algorithm which enhances the classical GA with input from quantum annealers is presented, found to be significantly more powerful on several simple problems than a classical GA.

Variations on vacuum decay: The scaling Ising and tricritical Ising field theories

We study the decay of the false vacuum in the scaling Ising and tricritical Ising field theories using the Truncated Conformal Space Approach and compare the numerical results to theoretical

Collider events on a quantum computer

This paper presents a novel approach to synthesising parton showers using the Discrete QCD method and uses the ibm_algiers device to sample parton shower configurations and generate data that is compared against measurements taken at the ALEPH, DELPHI and OPAL experiments.

QFitter -- A Quantum Fitting Framework Applied to Effective Field Theories

The use of experimental data to constrain the values of the Wilson coefficients of an Effective Field Theory (EFT) involves minimising a χ 2 function that may contain local minima. Classical

Dihedral Lattice Gauge Theories on a Quantum Annealer

We study lattice gauge theory with discrete, non-Abelian gauge groups. We extend the formalism of previous studies on D-Wave’s quantum annealer as a computing platform to finite, simply reducible



Vacuum decay in quantum field theory

We study the contribution to vacuum decay in field theory due to the interaction between the long and short-wavelength modes of the field. The field model considered consists of a scalar field of

A Simplified Pöschl–Teller Potential: An Instructive Exercise for Introductory Quantum Mechanics

The quantum mechanics of a simplified Poschl–Teller potential in one dimension is analyzed at an elementary level. The number of bound states of this potential is determined by a parameter l

Large effects from small QCD instantons: making soft bombs at hadron colliders

It is a common belief that the last missing piece of the Standard Model of particles physics was found with the discovery of the Higgs boson at the Large Hadron Collider. However, there remains a

Spontaneous skyrmion ground states in magnetic metals

It is theoretically shown that skyrmion textures may form spontaneously in condensed-matter systems with chiral interactions without the assistance of external fields or the proliferation of defects, within a phenomenological continuum model based on a few material-specific parameters that can be determined experimentally.

Domain wall encoding of discrete variables for quantum annealing and QAOA

In this paper I propose a new method of encoding discrete variables into Ising model qubits for quantum optimisation. The new method is based on the physics of domain walls in one-dimensional Ising

Quantum dynamics and tunneling of domain walls in ferromagnetic insulators.

  • Stamp
  • Physics
    Physical review letters
  • 1991
It is shown how large domain walls, containing ≥10 10 spins, can behave as quantum objects at low temperatures. They move quantum diffusively, and exhibit macroscopic tunneling from defect pinning

Instantons in chiral magnets

We exhaustively construct instanton solutions and elucidate their properties in one-dimensional antiferromagnetic chiral magnets based on the O(3) nonlinear sigma model description of spin chains