Testing Standard Model extensions with few-electron ions
- URL: http://arxiv.org/abs/2207.04868v1
- Date: Mon, 11 Jul 2022 13:44:04 GMT
- Title: Testing Standard Model extensions with few-electron ions
- Authors: Vincent Debierre and Natalia S. Oreshkina and Igor A. Valuev, Zolt\'an
Harman and Chistoph H. Keitel
- Abstract summary: When collecting data on at least four isotopes, nonlinearities in the King plot are a possible sign of Physics beyond the Standard Model.
Very careful account is taken of the small nuclear corrections to the energy levels and the gyromagnetic factors, which cause deviations from King linearity within the Standard Model.
This makes searching for beyond-the-Standard-Model physics with King linearity analysis possible in a very-high-precision experimental regime.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: When collecting spectroscopic data on at least four isotopes, nonlinearities
in the King plot are a possible sign of Physics beyond the Standard Model. In
this work, an improved approach to the search for hypothetical new interactions
with isotope shift spectroscopy of few-electron ions is presented. Very careful
account is taken of the small nuclear corrections to the energy levels and the
gyromagnetic factors, which cause deviations from King linearity within the
Standard Model and are hence a possible source of confounds. In this new
approach, the experimental King nonlinearity is not compared to the vanishing
prediction of the Standard Model at the leading order, but to the calculated
full Standard Model contribution to King nonlinearity. This makes searching for
beyond-the-Standard-Model physics with King linearity analysis possible in a
very-high-precision experimental regime, avoiding confounds. The bounds which
can be set on beyond-the-Standard-Model parameters remain limited by the
uncertainties on the small Standard Model nuclear corrections which cause King
nonlinearity. Direct comparison between theory and experiment on a single pair
of isotopes is advocated as a more suitable approach for few-electron ions.
Related papers
- The Challenges of the Nonlinear Regime for Physics-Informed Neural Networks [0.0]
We show how the NTK perspective falls short in the nonlinear scenario.
We explore the convergence guarantees of such methods in both linear and nonlinear cases.
arXiv Detail & Related papers (2024-02-06T10:24:36Z) - Ultracold Neutrons in the Low Curvature Limit: Remarks on the
post-Newtonian effects [49.1574468325115]
We apply a perturbative scheme to derive the non-relativistic Schr"odinger equation in curved spacetime.
We calculate the next-to-leading order corrections to the neutron's energy spectrum.
While the current precision for observations of ultracold neutrons may not yet enable to probe them, they could still be relevant in the future or in alternative circumstances.
arXiv Detail & Related papers (2023-12-30T16:45:56Z) - Doubly Stochastic Graph-based Non-autoregressive Reaction Prediction [59.41636061300571]
We propose a new framework called that combines two doubly self-attention mappings to obtain electron redistribution predictions.
We show that our approach consistently improves the predictive performance of non-autoregressive models.
arXiv Detail & Related papers (2023-06-05T14:15:39Z) - A supplemental investigation of non-linearity in quantum generative models with respect to simulatability and optimization [1.4329826483358277]
We investigate two questions of relevance to the quantum algorithms and machine learning communities.
Does introducing this form of non-linearity make the learning model classically simulatable due to the deferred measurement principle?
And does introducing this form of non-linearity make the overall model's training more unstable?
arXiv Detail & Related papers (2023-02-01T22:48:26Z) - Predicting leptonic CP violation via minimization of neutrino
entanglement [68.8204255655161]
We find a theoretical prediction consistent with either no CP-violation or a very small presence of it.
We show how a minimization principle of quantum entanglement between the oscillating flavors of a neutrino leads to a unique prediction for the CP-violation phase in the neutrino sector without assuming extra symmetries in the Standard Model.
arXiv Detail & Related papers (2022-07-07T13:59:55Z) - Direct Measurement of Higher-Order Nonlinear Polarization Squeezing [0.0]
We report on nonlinear squeezing effects of polarization states of light by harnessing the intrinsic correlations from a polarization-entangled light source and click-counting measurements.
To quantify quantum effects, theoretical bounds are derived for second- and higher-order moments of nonlinear Stokes operators.
Our data certify nonclassical correlations with high statistical significance, without the need to correct for experimental imperfections and limitations.
arXiv Detail & Related papers (2022-04-14T16:26:43Z) - Tests of physics beyond the Standard Model with single-electron ions [0.0]
A highly effective approach to the search for hypothetical new interactions through isotope shift spectroscopy of hydrogen-like ions is presented.
A weighted difference of the g factor and ground-state energy is shown to assist in the suppression of detrimental uncertainties from nuclear structure.
arXiv Detail & Related papers (2022-02-03T16:29:45Z) - Normalizing flows for atomic solids [67.70049117614325]
We present a machine-learning approach, based on normalizing flows, for modelling atomic solids.
We report Helmholtz free energy estimates for cubic and hexagonal ice modelled as monatomic water as well as for a truncated and shifted Lennard-Jones system.
Our results thus demonstrate that normalizing flows can provide high-quality samples and free energy estimates of solids, without the need for multi-staging or for imposing restrictions on the crystal geometry.
arXiv Detail & Related papers (2021-11-16T18:54:49Z) - Enhanced nonlinear quantum metrology with weakly coupled solitons and
particle losses [58.720142291102135]
We offer an interferometric procedure for phase parameters estimation at the Heisenberg (up to 1/N) and super-Heisenberg scaling levels.
The heart of our setup is the novel soliton Josephson Junction (SJJ) system providing the formation of the quantum probe.
We illustrate that such states are close to the optimal ones even with moderate losses.
arXiv Detail & Related papers (2021-08-07T09:29:23Z) - Certifying multi-mode light-matter interaction in lossy resonators [0.0]
We develop a certification criterion for multi-mode effects in lossy resonators.
It is based on a witness observable, and neither requires a fitting procedure nor a Markov approximation.
We demonstrate that such multi-mode effects are important for understanding previous experiments in X-ray cavity QED with M"ossbauer nuclei.
arXiv Detail & Related papers (2021-07-25T10:26:11Z) - Hessian Eigenspectra of More Realistic Nonlinear Models [73.31363313577941]
We make a emphprecise characterization of the Hessian eigenspectra for a broad family of nonlinear models.
Our analysis takes a step forward to identify the origin of many striking features observed in more complex machine learning models.
arXiv Detail & Related papers (2021-03-02T06:59:52Z)
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.