Article
Astronomy & Astrophysics
Giuseppe Clemente, Arianna Crippa, Karl Jansen
Summary: This study proposes to use noisy-intermediate-scale-quantum-era quantum devices to compute short distance quantities in (2 + 1)-dimensional QED, and combine them with large volume Monte Carlo simulations and perturbation theory. By performing quantum computations, the mass gap in the small and intermediate regime can be reliably resolved and matched with corresponding results from Monte Carlo simulations.
Article
Astronomy & Astrophysics
Bipasha Chakraborty, Masazumi Honda, Taku Izubuchi, Yuta Kikuchi, Akio Tomiya
Summary: In this study, we designed a protocol for digital quantum computation of a gauge theory with a topological term in Minkowski spacetime. We focused on the 1+1 dimensional quantum electrodynamics with the Schwinger model and tested our protocol on an IBM simulator. By constructing the true vacuum state using adiabatic state preparation, we were able to compute the expectation value of the fermion mass operator and compare our results with the known exact result in the massless case. Although there were deviations in the massive case, our results imply that digital quantum simulation is a promising tool to explore nonperturbative aspects of gauge theories with real time and topological terms.
Article
Physics, Multidisciplinary
R. Ott, T. Zache, F. Jendrzejewski, J. Berges
Summary: The study introduces a scalable analog quantum simulator for quantum electrodynamics in two dimensions, using ultracold atomic mixtures in an optical lattice. By engineering spatial plaquette terms for magnetic fields, a major obstacle towards realizing realistic gauge theories in higher dimensions is solved. The phenomenon of confinement of electric charges is discussed in the context of the pure gauge theory of compact QED within this quantum simulator.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Particles & Fields
Miguel Correia, Joao Penedones, Antoine Vuignier
Summary: This article presents a dual setup in 2 space-time dimensions that combines scattering amplitudes of massive particles and matrix elements of local operators. By utilizing the stress energy tensor, it is possible to impose UV constraints on IR observables using the central charge cUV of the UV Conformal Field Theory. Two applications are considered, including establishing a lower bound on cUV for Z(2) symmetric scalar theories in the IR and studying Ising Field Theory under different magnetic fields and cubic couplings for fixed cUV = 1/2.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Multidisciplinary Sciences
Erich Poppitz
Summary: This article provides a pedagogical introduction to the physics of confinement on R(3)xS(1) using SU(2) Yang-Mills and adjoint fermions as an example. It discusses how introducing adjoint fermions stabilizes center symmetry and allows for semiclassical calculation of nonperturbative physics. The article also explores the generation of monopole-instantons and twisted monopole-instantons, as well as the role of various topological excitations.
Article
Multidisciplinary Sciences
Kevissen Sellapillay, Pablo Arrighi, Giuseppe Di Molfetta
Summary: The article introduces a quantum cellular automaton that coincides with 1 + 1QED and demonstrates its accuracy through the limits of the evolution equations.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Particles & Fields
Masanori Hanada, Jack Holden, Matthew Knaggs, Andy O'Bannon
Summary: This study investigates the phenomenon of spontaneous breaking of the center symmetry in gauge theories and the distinction between completely and partially deconfined phases. Two examples are presented to demonstrate the spontaneous breaking of a global symmetry in the confined phase and its preservation in the deconfined phase, as well as its spontaneous breaking in the partially-deconfined phase. This suggests that global symmetries may serve as order parameters to distinguish between completely and partially deconfined phases.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Mariia Anosova, Christof Gattringer, Tin Sulejmanpasic
Summary: In this paper, we study U(1) gauge theories with a modified Villain action and discuss their coupling to electric and magnetic matter as well as the exact electric-magnetic duality. We also show that imposing electric-magnetic duality results in a local, but not ultra-local lattice action.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Takuya Okuda
Summary: In this work, we study the quantum electrodynamics in 1 + 1 dimensions (Schwinger model) and its lattice discretization. We clarify the precise mapping between the boundary conditions in the continuum and lattice theories. We also obtain exact analytic results for local observables in the massless Schwinger model and find excellent agreements with simulation results.
Article
Physics, Particles & Fields
Peter Millington, Zong-Gang Mou, Paul M. Saffin, Anders Tranberg
Summary: This paper explores the Classical-Statistical approximation in the context of Bell-type inequalities, showing that it does not violate temporal Bell-type inequalities despite being exact for a free theory. The study highlights the key difference between spatial and temporal Bell-type inequalities, shedding light on the implications of the Classical-Statistical approximation for quantum field theory applications.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Qiang Chen, Jianyuan Xiao, Peifeng Fan
Summary: A class of high-order algorithms have been developed for high-quality simulations of strong-field quantum electrodynamics and relativistic quantum plasmas. These algorithms maintain the original continuous geometric structures by constructing Lagrangian densities, discretizing bispinor and gauge field components, and introducing discrete canonical Poisson brackets.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Ryuichiro Kitano, Norikazu Yamada, Masahito Yamazaki
Summary: In this study, the theta dependence of vacuum energy for the 4d SU(2) pure Yang-Mills theory is investigated, with the determination of the first two coefficients in the theta expansion of the vacuum energy in the continuum limit. The SU(2) results are found to be consistent with large N scaling, and by analytic continuing the number of colors to non-integer values, the phase diagram of the vacuum structure of SU(N) gauge theory is inferred. Quantitative evidence is provided for the gapped property of 4d SU(2) Yang-Mills theory at theta = pi with spontaneous breaking of the CP symmetry based on numerical results.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Fadi Sun, Jinwu Ye
Summary: Researchers have discovered a new phenomenon where the order from quantum disorders (OFQD) transfers a spurious quadratic mode into a true linear Goldstone mode, named the slow-Goldstone mode. This opposite phenomenon is demonstrated in an interacting bosonic system and a new OFQD analysis method is developed to determine the quantum ground state and excitation spectrum. This phenomenon may have connections to various theories in particle physics and may be observed in current cold-atom or photonic experiments.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Pablo Arnault, Christopher Cedzich
Summary: In this paper, we propose a real-time lattice gauge theory (LGT) for a spin-1/2 matter field of a single particle on a (1 + 1)-dimensional spacetime lattice. The framework is based on a discrete-time quantum walk, which ensures unitarity and locality, with transition amplitudes vanishing outside of a lightcone on the lattice. We also present a lattice Noether's theorem for internal symmetries of this action and couple it to an electromagnetic field. Furthermore, we suggest a real-time LGT-type action for the electromagnetic field in arbitrary spacetime dimensions, deriving its classical equations of motion as lattice versions of Maxwell's equations.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Multidisciplinary
Yasha Neiman
Summary: We study minimal type-A higher-spin gravity in four dimensions, proposing new diagrammatic rules that involve Fronsdal fields and Didenko-Vasiliev particles. These rules can reproduce all n-point functions of the theory's holographic dual, the free O(N) vector model.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Nuclear
Z-F Cui, M. Ding, F. Gao, K. Raya, D. Binosi, L. Chang, C. D. Roberts, J. Rodriguez-Quintero, S. M. Schmidt
Summary: The study discusses the distribution functions of K mesons, compares them with similar distributions of π mesons, and reveals how their light-front momentum is shared. The research provides the first parameter-free predictions for K distribution functions, emphasizing the need for new experiments sensitive to all K and π DFs.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Nuclear
K. Raya, Z. -f. Cui, L. Chang, J. M. Morgado, C. D. Roberts, J. Rodriguez-Quintero
Summary: Observable measures provide clear windows into emergent hadron mass and its modulations by Higgs boson interactions, which can be accessed through generalised parton distributions (GPDs). Analysis reveals various properties and predictions, such as stiffness differences between gravitational and electromagnetic form factors, tightness of K pressure profiles compared to pi profiles, and similar fraction of meson mass-squared carried by glue and sea combined as with the valence degrees-of-freedom.
Article
Physics, Nuclear
Z. -F. Cui, M. Ding, J. M. Morgado, K. Raya, D. Binosi, L. Chang, J. Papavassiliou, C. D. Roberts, J. Rodriguez-Quintero, S. M. Schmidt
Summary: The analysis of the pion valence-quark distribution function predicts that its behavior at x approximately equal to 1 follows the model of (1 - x)(β(σ)), taking into account the pion wave function prescribed by QCD. However, the empirical status of this behavior remains uncertain due to disagreements in fitting existing data. Further experimental data is needed to reach a final conclusion.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Multidisciplinary
Jose Manuel Morgado Chavez, Valerio Bertone, Feliciano De Soto Borrero, Maxime Defurne, Cedric Mezrag, Herve Moutarde, Jose Rodriguez-Quintero, Jorge Segovia
Summary: This study presents the first systematic feasibility analysis of accessing the generalized parton distributions (GPDs) of the pion at an electron-ion collider using deeply virtual Compton scattering. The interference between quarks and gluons is found to be destructive, leading to modulation of the expected event rate. The event rate is maximized when the parton content is generated through radiation from valence dressed quarks. Furthermore, gluons are observed to induce a sign inversion for the beam-spin asymmetry, providing a clear signal for identifying the regime of gluon dominance.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Ya Lu, Lei Chang, Khepani Raya, Craig D. Roberts, Jose Rodriguez-Quintero
Summary: This study uses consistent determination of valence distribution functions (DFs) for proton and pion at the same hadron scale, and presents a unified prediction for all DFs including valence, glue, and four-flavour-separated sea. The results show that while identifiable parton classes carry the same hadron light-front momentum fractions for both proton and pion at any scale, the behavior of DFs is strongly dependent on the hadron.
Article
Astronomy & Astrophysics
F. Pinto-Gomez, F. De Soto, M. N. Ferreira, J. Papavassiliou, J. Rodriguez-Quintero
Summary: We present new results for the three-gluon vertex obtained from a large-scale lattice simulation in the Landau gauge. The simulation evaluates the transversely projected vertex using a special tensorial basis, with form factors parametrized in terms of Bose-symmetric variables. Interestingly, the form factors primarily depend on a single kinematic variable, the sum of the squares of the three incoming four-momenta. This property, known as planar degeneracy, allows for a simplified and compact description of the data, suitable for future numerical applications. Confirming this property through a detailed study of specific configurations, we find that a semi-perturbative analysis accurately reproduces the lattice findings when a gluon mass is included to eliminate spurious divergences. (c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
Article
Physics, Multidisciplinary
Y. -Z Xu, K. Raya, Z. -F Cui, C. D. Roberts, J. Rodriguez-Quintero
Summary: Ensembles of model-independent representations of the pion generalized parton distribution (GPD) are developed using existing pion+nucleus Drell-Yan and electron+pion scattering data. This leads to a data-driven prediction for the pion mass distribution form factor, ?2p.
CHINESE PHYSICS LETTERS
(2023)
Article
Astronomy & Astrophysics
A. C. Aguilar, F. De Soto, M. N. Ferreira, J. Papavassiliou, F. Pinto-Gomez, C. D. Roberts, J. Rodriguez-Quintero
Summary: Continuum and lattice analyses have discovered a mass-scale in the gluon two-point Schwinger function, indicating the presence of a Schwinger mechanism for gauge boson mass generation in quantum chromodynamics (QCD). By using numerical simulations of lattice-regularised QCD, the researchers established with high confidence the existence of a dynamically-generated, massless, colour-carrying, scalar gluon+gluon correlation, confirming the conjectured origin of the gluon mass scale.
Article
Physics, Multidisciplinary
Pei-Lin Yin, Yin-Zhen Xu, Zhu-Fang Cui, Craig D. Roberts, Jose Rodriguez-Quintero
Summary: This article introduces an algebraic scheme that predicts all PDFs of a hadron at any higher scale, using a given hadron's valence parton PDFs. Furthermore, it presents a model-independent identity that relates the strength of the proton's gluon helicity PDF to other polarized quark PDFs and valence quark momentum fraction.
CHINESE PHYSICS LETTERS
(2023)
Article
Astronomy & Astrophysics
B. Almeida-Zamora, J. J. Cobos-Martinez, A. Bashir, K. Raya, J. Rodriguez-Quintero, J. Segovia
Summary: Inspired by a recent algebraic model, this study extends the model to the case of vector mesons, providing a description of their internal structure. By calculating the leading-twist light-front wave functions and their connection with parton distribution amplitudes, the wave functions of the mesons are obtained. Some interesting results include the algebraic derivation of transverse light-front wave functions but the need for an intermediate step for longitudinal wave functions, differences observed between light and heavy vector mesons, and the x and p(perpendicular to)^(2) dependence of the wave functions.
Meeting Abstract
Surgery
J. Rodriguez-Quintero, A. T. Garcia Cabrera, F. M. Flores, J. Choi, E. Moran-Atkin, D. R. Camach
BRITISH JOURNAL OF SURGERY
(2022)
Meeting Abstract
Surgery
J. Rodriguez-Quintero, A. T. Garcia Cabrera, F. M. Flores, J. Choi, E. Moran-Atkin, D. R. Camach
BRITISH JOURNAL OF SURGERY
(2022)
Article
Astronomy & Astrophysics
Z-F Cui, M. Ding, J. M. Morgado, K. Raya, D. Binosi, L. Chang, F. De Soto, C. D. Roberts, J. Rodriguez-Quintero, S. M. Schmidt
Summary: Assuming the existence of an effective charge to define the evolution scheme for parton distribution functions (DFs), this study derives strict lower and upper bounds on all Mellin moments of the valence-quark DFs of pionlike systems. By using numerical simulations of lattice-regularized quantum chromodynamics (QCD) consistent with these bounds, parameter-free predictions for pion valence, glue, and sea DFs are obtained. The study shows that the form of the valence-quark DF is consistent with predictions derived from the QCD-prescribed behavior of the pion wave function.
Article
Astronomy & Astrophysics
Jose Manuel Morgado Chavez, Valerio Bertone, Feliciano De Soto Borrero, Maxime Defurne, Cedric Mezrag, Herve Moutarde, Jose Rodriguez-Quintero, Jorge Segovia
Summary: We introduce a new family of generalized parton distribution models that satisfy all the theoretical properties imposed by QCD. These models are constructed based on standard parton distribution functions and extended to off-forward kinematics using a well-defined procedure. We apply this strategy to the pion and compare the results with a more standard model obtained from an xFitter extraction. The calculated quark and gluon generalized parton distributions are then used to calculate electromagnetic, gravitational, and Compton form factors. The results highlight the importance of next-to-leading-order corrections even in the valence region.
Article
Astronomy & Astrophysics
Jan Horak, Jan M. Pawlowski, Jose Rodriguez-Quintero, Jonas Turnwald, Julian M. Urban, Nicolas Wink, Savvas Zafeiropoulos
Summary: In this study, we reconstruct ghost and gluon spectral functions in 2 + 1 flavor QCD using Gaussian process regression. By specifying generic magnitude and length scale parameters in the kernel function, we are able to suppress spurious oscillations and other common reconstruction artifacts. We utilize results from functional computations in Yang-Mills theory and QCD to further reduce systematic error. Our numerical results are compared against direct real-time functional computations and an earlier reconstruction in Yang-Mills theory, showing the promising potential of this systematic approach in unveiling real-time properties of QCD.
