# Observing the fate of the false vacuum with a quantum laboratory

@article{Abel2020ObservingTF, 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}, year={2020} }

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…

## 19 Citations

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## References

SHOWING 1-10 OF 34 REFERENCES

### Vacuum decay in quantum field theory

- Physics
- 2001

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

- PhysicsJournal of Chemical Education
- 2018

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

- Physics
- 2020

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

- PhysicsNature
- 2006

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

- PhysicsQuantum Science and Technology
- 2019

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.

- PhysicsPhysical 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…

### Multi-instanton calculus and the AdS/CFT correspondence in N = 4 superconformal field theory

- Physics
- 1999

### Instantons in chiral magnets

- PhysicsPhysical Review B
- 2020

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…