Coherent Quantum Evaluation of Collider Amplitudes for Effective Field Theory Constraints

• URL: http://arxiv.org/abs/2602.21311v1
• Date: Tue, 24 Feb 2026 19:33:17 GMT
• Title: Coherent Quantum Evaluation of Collider Amplitudes for Effective Field Theory Constraints
• Authors: Yacine Haddad, Kaidi Xu, Vincent Croft, Jad C. Halimeh, Michele Grossi,
• Abstract summary: We present a hybrid quantum-classical framework for computing leading-order helicity amplitudes for $e+e-to ell+ell-$ scattering on gate-based quantum hardware.<n>We use the resulting cross sections to constrain both Standard Model couplings and effective field theory operators.
• Score: 15.177973842316527
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Precision measurements at electron-positron colliders provide stringent tests of the Standard Model and powerful probes of possible higher-dimensional interactions. We present a hybrid quantum-classical framework for computing leading-order helicity amplitudes for $e^+e^-\to \ell^+\ell^-$ scattering on gate-based quantum hardware and using the resulting cross sections to constrain both Standard Model couplings and effective field theory operators. In our approach, external kinematics are encoded into single-qubit Weyl spinors, and full helicity amplitudes are reconstructed by coherently combining diagrammatic contributions within a single quantum circuit. Classical post-processing yields physical amplitudes and differential cross sections that can be directly compared with collider data. As a proof of concept, we compute unpolarised angular distributions and perform binned likelihood fits to precision electron-positron measurements. The extracted bounds are statistically consistent with Standard Model expectations, demonstrating that quantum-assisted amplitude evaluation can interface directly with phenomenological analyses and experimental data. This work establishes a concrete pathway toward applying quantum computing to precision collider physics and effective field theory studies.

Related papers

• Engineering quantum criticality and dynamics on an analog-digital simulator [26.76525389323686]
  We use coherent mapping between the Rydberg and hyperfine qubits in a neutral atom array simulator to engineer and probe complex quantum dynamics.<n>We first demonstrate dynamical engineering of ring-exchange and particle hopping dynamics via Floquet driving.<n>We employ closed-loop optimization to target an out-of-equilibrium critical quantum spin liquid of the Rokhsar-Kivelson type.
  arXiv  Detail & Related papers  (2026-02-20T19:00:00Z)
• Stochastic Quantum Information Geometry and Speed Limits at the Trajectory Level [35.18016233072556]
  We bridge the gap between quantum information geometry and thermodynamics by introducing the Conditional Quantum Fisher Information (CQFI)<n>We show that the CQFI admits a decomposition into incoherent (population) and coherent (basis rotation) contributions, augmented by a transient interference cross-term absent at the ensemble level.
  arXiv  Detail & Related papers  (2026-01-18T16:23:26Z)
• Signatures of Topological Symmetries on a Noisy Quantum Simulator [0.0]
  Topological symmetries, invertible and otherwise, play a fundamental role in the investigation of quantum field theories.<n>Quantum simulators based on engineered solid-state devices provide a novel alternative to conventional condensed matter systems for realizing these models.<n>In this work, eigenstates of impurity Hamiltonians and loop operators associated with the topological symmetries for the Ising conformal field theory are realized on IBM's Kingston simulator.
  arXiv  Detail & Related papers  (2025-10-16T15:51:56Z)
• Towards Compact Wavefunctions from Quantum-Selected Configuration Interaction [0.0]
  We present an algorithm that leverages Hamiltonian time evolution in Quantum-Selected Configuration Interaction (QSCI)<n>We assess the resulting wavefunctions for compactness, a point on which QSCI has previously been criticised.<n>This result is achieved with a configuration sampling scheme that uses the experimental orbital occupancies of a time-evolved quantum state to predict likely single and double excitations.
  arXiv  Detail & Related papers  (2025-09-02T17:27:12Z)
• Reaching the Ultimate Quantum Precision Limit at Colliders: Conditions and Case Studies [15.086501264289614]
  We investigate whether collider experiments can reach the quantum limit of precision, defined by the quantum Fisher information (QFI)<n>We develop a general framework to determine when collider measurements can saturate the QFI in an entangled biparticle system.<n>We show that the classical Fisher informationally saturates the QFI for magnetic moments and CP-violating Higgs interactions in selected phase-space regions.
  arXiv  Detail & Related papers  (2025-06-12T13:03:36Z)
• Nuclear responses with neural-network quantum states [37.902436796793616]
  We introduce a variational Monte Carlo framework that combines neural-network quantum states with the Lorentz integral transform technique.<n>We focus on the photoabsorption cross section of light nuclei, where benchmarks against numerically exact techniques are available.
  arXiv  Detail & Related papers  (2025-04-28T18:57:21Z)
• Computing band gaps of periodic materials via sample-based quantum diagonalization [0.046813104368264594]
  We present a quantum diagonalization (SQD) workflow for simulating the electronic ground state of periodic materials.<n>By sampling the quantum circuit and classically diagonalizing the Hamiltonian in the resulting configuration subspace, we predict the band gap energy of representative materials.
  arXiv  Detail & Related papers  (2025-03-13T21:34:02Z)
• Simulating electronic structure on bosonic quantum computers [34.84696943963362]
  We propose an approach to map the electronic Hamiltonian into a qumode bosonic problem that can be solved on bosonic quantum devices.<n>This work establishes a new pathway for simulating many-fermion systems, highlighting the potential of hybrid qubit-qumode quantum devices.
  arXiv  Detail & Related papers  (2024-04-16T02:04:11Z)
• Tailored and Externally Corrected Coupled Cluster with Quantum Inputs [0.0]
  We propose to use wavefunction overlaps obtained from a quantum computer as inputs for the classical split-amplitude techniques. We provide insights into which wavefunction preparation schemes have a chance of yielding quantum advantage.
  arXiv  Detail & Related papers  (2023-12-13T12:57:39Z)
• Bosonic field digitization for quantum computers [62.997667081978825]
  We address the representation of lattice bosonic fields in a discretized field amplitude basis. We develop methods to predict error scaling and present efficient qubit implementation strategies.
  arXiv  Detail & Related papers  (2021-08-24T15:30:04Z)
• Quantum transport and localization in 1d and 2d tight-binding lattices [39.26291658500249]
  Particle transport and localization phenomena in condensed-matter systems can be modeled using a tight-binding lattice Hamiltonian. Here, we experimentally study quantum transport in one-dimensional and two-dimensional tight-binding lattices, emulated by a fully controllable $3 times 3$ array of superconducting qubits.
  arXiv  Detail & Related papers  (2021-07-11T12:36:12Z)
• Probing the Universality of Topological Defect Formation in a Quantum Annealer: Kibble-Zurek Mechanism and Beyond [46.39654665163597]
  We report on experimental tests of topological defect formation via the one-dimensional transverse-field Ising model. We find that the quantum simulator results can indeed be explained by the KZM for open-system quantum dynamics with phase-flip errors. This implies that the theoretical predictions of the generalized KZM theory, which assumes isolation from the environment, applies beyond its original scope to an open system.
  arXiv  Detail & Related papers  (2020-01-31T02:55:35Z)
• Quantum decoherence by Coulomb interaction [58.720142291102135]
  We present an experimental study of the Coulomb-induced decoherence of free electrons in a superposition state in a biprism electron interferometer close to a semiconducting and metallic surface. The results will enable the determination and minimization of specific decoherence channels in the design of novel quantum instruments.
  arXiv  Detail & Related papers  (2020-01-17T04:11:44Z)

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.