False vacuum decay in a two-dimensional quantum spin system

• URL: http://arxiv.org/abs/2607.01994v1
• Date: Thu, 02 Jul 2026 10:28:11 GMT
• Title: False vacuum decay in a two-dimensional quantum spin system
• Abstract summary: False vacuum decay describes the relaxation of a metastable state through the nucleation and growth of bubbles of the stable phase.<n>Here, we study false vacuum decay in the quantum Ising model in two dimensions.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: False vacuum decay describes the relaxation of a metastable state through the nucleation and growth of bubbles of the stable phase. Despite describing a broad variety of phenomena across different fields, the quantum version of the nucleation theory has little experimental or numerical support. Testing its predictions is particularly important in two or more spatial dimensions, where bubble nucleation acquires its true geometrical nature. Here, we study false vacuum decay in the quantum Ising model in two dimensions. Through tree tensor network simulations we extract the decay rate, the effective interface tension and the critical bubble size. We compare them to new semi-classical field theory calculations, and find excellent agreement. These results provide numerical evidence that the critical-bubble picture survives in an interacting quantum spin system in 2+1 dimensions.

Related papers

• Imaging the vacuum fluctuations of a quantum field [42.533595413559105]
  We directly observe spatial vacuum fluctuations of a bosonic quantum field.<n>Our experiments are based on a homogeneous planar atomic Bose-Einstein condensate.<n>Images of the field reveal simultaneous fluctuations on different length scales, with scale-dependent amplitudes consistent with theoretical predictions for a vacuum state.
  arXiv  Detail & Related papers  (2026-08-20T17:49:29Z)
• Resonant false vacuum decay in two dimensions on a 4000-qubit quantum annealer [0.1759008116536278]
  We show that domain growth outpaces nucleation by orders of magnitude and is controlled by local resonance conditions.<n>Using a programmable quantum annealer with more than 4000 qubits, we realize a two-dimensional quantum Ising model.<n>Our results establish a growth-dominated regime of false vacuum decay and show how large-scale quantum simulation can access non metastable dynamics.
  arXiv  Detail & Related papers  (2026-06-24T14:33:51Z)
• Multirate characterization of relaxation mechanisms for two nonequivalent nuclear spins 1/2 in a liquid using maximally entangled pseudo-pure quantum states [41.99844472131922]
  Multirate characterization of spin responses in nuclear magnetic resonance (NMR) is a promising approach to fingerprinting complex molecules.<n>We present experimental and theoretical investigations simultaneously accessing 8 relaxation rates describing the density matrix of two adjacent nonequivalent nuclear spins.
  arXiv  Detail & Related papers  (2026-04-29T21:42:37Z)
• Temperature driven false vacuum decay in coherently coupled Bose superfluids [0.0]
  We study the relaxation of a quantum field from a metastable state (false vacuum) to a stable one (true vacuum)<n>The decay rates show an exponential dependence on temperature, in line with the thermal theory of instantons.<n>Our results confirm the Gross-Pitaevskii equation (SGPE) as an effective tool for studying coupled magnetization and phase dynamics.
  arXiv  Detail & Related papers  (2026-02-03T18:52:36Z)
• Microscopic Dynamics of False Vacuum Decay in the $2+1$D Quantum Ising Model [0.003004180595230273]
  False vacuum decay is a prominent phenomenon relevant to elementary particle physics and early-universe cosmology.<n>Recent advances in numerical techniques allow for the extraction of related signatures in tractable systems in two dimensions over intermediate timescales.<n>We provide a realistic quantum-simulation scheme, aimed at probing bubble dynamics on atomic Rydberg arrays.
  arXiv  Detail & Related papers  (2026-01-07T19:00:00Z)
• Revisiting the Broken Symmetry Phase of Solid Hydrogen: A Neural Network Variational Monte Carlo Study [42.40832340604796]
  We show that even the broken symmetry phase observed around 130GPa requires revisiting due to its intricate coupling of electronic and nuclear degrees of freedom.<n>Our calculations reveal an unreported ground-state structure candidate for the broken symmetry phase with $Cmcm$ space group symmetry.<n>These results shed new light on the phase diagram of high-pressure hydrogen and call for further experimental verifications.
  arXiv  Detail & Related papers  (2025-12-19T15:36:27Z)
• False vacuum decay and nucleation dynamics in neutral atom systems [0.14980193397844668]
  We study nucleation dynamics in 1D antiferromagnetic neutral atom chains with Rydberg interactions. We propose experimental protocols to prepare the required states and perform quenches on near-term neutral atom quantum simulators.
  arXiv  Detail & Related papers  (2024-04-18T17:39:47Z)
• Real-time dynamics of false vacuum decay [49.1574468325115]
  We investigate false vacuum decay of a relativistic scalar field in the metastable minimum of an asymmetric double-well potential. We employ the non-perturbative framework of the two-particle irreducible (2PI) quantum effective action at next-to-leading order in a large-N expansion.
  arXiv  Detail & Related papers  (2023-10-06T12:44:48Z)
• Observation of false vacuum decay via bubble formation in ferromagnetic superfluids [47.187609203210705]
  In quantum field theory, the decay of an extended metastable state into the real ground state is known as false vacuum decay'' Here, we observe bubble nucleation in isolated and highly controllable superfluid atomic systems.
  arXiv  Detail & Related papers  (2023-05-09T07:41:08Z)
• False vacuum decay in quantum spin chains [0.0]
  We study the non-equilibrium dynamics of the false vacuum in a quantum Ising chain and in an XXZ ladder. We find that the numerical results agree with the theoretical prediction that the decay rate is exponentially small in the inverse of the longitudinal field.
  arXiv  Detail & Related papers  (2021-07-21T16:01:39Z)
• Long-distance entanglement of purification and reflected entropy in conformal field theory [58.84597116744021]
  We study entanglement properties of mixed states in quantum field theory via entanglement of purification and reflected entropy. We find an elementary proof that the decay of both, the entanglement of purification and reflected entropy, is enhanced with respect to the mutual information behaviour.
  arXiv  Detail & Related papers  (2021-01-29T19:00:03Z)
• Exploring 2D synthetic quantum Hall physics with a quasi-periodically driven qubit [58.720142291102135]
  Quasi-periodically driven quantum systems are predicted to exhibit quantized topological properties. We experimentally study a synthetic quantum Hall effect with a two-tone drive.
  arXiv  Detail & Related papers  (2020-04-07T15:00:41Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.