Article
Astronomy & Astrophysics
Jerzy Lukierski, Mariusz Woronowicz
Summary: This article discusses the relativistic Lorentz-covariant quantum space-times obtained by Snyder and the Lorentz-covariant quantum phase spaces introduced by Yang, as well as their extensions in superalgebras. The article also briefly reviews other ways of deriving quantum phase spaces and compares different types of Snyder models.
Article
Automation & Control Systems
Carlos A. Gomez-Uribe, Brian Karrer
Summary: This study focuses on applying DEKF to factorization models for online large-scale recommender systems, demonstrating through numerical experiments the effectiveness of the approach in making factorization models more broadly useful. By using a different parameter dynamics and highlighting the role of Fisher information matrix in the EKF, this method allows for parameter drift while encouraging reasonable values.
JOURNAL OF MACHINE LEARNING RESEARCH
(2021)
Article
Physics, Particles & Fields
Junjie Cao, Jingwei Lian, Yusi Pan, Di Zhang, Pengxuan Zhu
Summary: A recent Fermilab report showed a significant discrepancy between muon g-2 and the standard model prediction. The study suggests that in the general next-to-minimal supersymmetric standard model (GNMSSM), a singlino-dominated neutralino could explain this discrepancy and make the detection of sparticles at the LHC challenging.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sergei M. Kuzenko
Summary: The paper presents N = 2 superconformal U(1) duality-invariant models for an Abelian vector multiplet coupled to conformal supergravity and proposes a local U(1) duality-invariant action generating the N = 2 super-Weyl anomaly. Additionally, a new derivation of the recently constructed U(1) duality-invariant N = 1 superconformal electrodynamics is provided, introducing its SL(2, R) duality-invariant coupling.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Ethan Carragher, Will Handley, Daniel Murnane, Peter Stangl, Wei Su, Martin White, Anthony G. Williams
Summary: Models where the Higgs boson is a composite pseudo-Nambu-Goldstone boson provide attractive solutions to the Higgs mass naturalness problem. By examining three such models based on the minimal SO(5) -> SO(4) symmetry breaking pattern, it is found that each model can satisfy all constraints simultaneously and analysis of the collider phenomenology in viable regions reveals interesting results.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yuichiro Nakai, Matthew Reece, Motoo Suzuki
Summary: The article discusses how hierarchical masses of quarks and leptons are addressed by imposing horizontal symmetries and how the same symmetries play a role in suppressing flavor violating processes in supersymmetric models. By combining the idea of spontaneous CP violation to control contributions to electric dipole moments (EDMs), the mass scale of supersymmetric particles can be lowered. Furthermore, models with two U(1) symmetries are found to provide a viable solution to the muon g - 2 anomaly, with future electron EDM experiments potentially probing the parameter space to explain the anomaly.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Alon E. Faraggi, Viktor G. Matyas, Benjamin Percival
Summary: The study extends the classification of fermionic Z(2) x Z(2) heterotic string orbifolds to nonsupersymmetric Pati-Salam models, extracting tachyon-free four-dimensional models with certain probabilities, and introducing the "fertility methodology" to facilitate model extraction. It is shown that (S) over tilde models do not contain heavy Higgs scalar representations necessary for breaking the PS symmetry to the Standard Model, suggesting that the SO(10) grand unified theory symmetry must be broken at the string scale to the Standard-like Model subgroup. Tachyon-free three generation models with equal number of massless bosonic and fermionic degrees of freedom are extracted in both cases, with their one-loop partition function analyzed.
Article
Astronomy & Astrophysics
Sergey Krivonos, Olaf Lechtenfeld, Anton Sutulin
Summary: In this paper, the integrability of the N-extended supersymmetric Calogero-Moser model is analyzed. By constructing the Lax pair and deriving the Liouville charges, the superintegrability structure of the model is revealed.
Article
Physics, Particles & Fields
Ulf Lindstrom
Summary: This paper investigates how extended supersymmetry realised directly on the (2,2) semichiral superfields of a symplectic sigma model gives rise to a geometry on the doubled tangent bundle consisting of two Yano F structures on an almost para-hermitian manifold. The closure of the algebra and invariance of the action are discussed within this framework, and the integrability of the F structures is defined and shown to hold. The paper also explores the reduction to the usual (1,1) sigma model description and establishes its identification with the bi-quaternionic set of complex structures and their properties. The F structure formulation has potential applications in many other models and can be equivalently formulated in Generalised Geometry.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Sergei M. Kuzenko, Emmanouil S. N. Raptakis
Summary: This study involves using the off-shell formulation for N = 2 conformal supergravity in four dimensions to investigate superconformal higher-spin multiplets of conserved currents in a curved background, and demonstrates their associated unconstrained gauge prepotentials. By constructing locally superconformal chiral actions and proving their gauge invariance in arbitrary conformally flat backgrounds, the main N = 2 results are then generalized to the N-extended case. Additionally, gauge-invariant field strengths for on-shell massless higher-spin N = 2 supermultiplets in anti-de Sitter space are presented, showing representations of the N = 2 superconformal group.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Mathematics, Applied
Qin Zhong, Chunyan Zhao
Summary: This paper investigates the properties of the extended Perron complements for M matrices. We establish the connection between the extended Perron complements and nonnegative matrices, and present common inequalities involving the extended Perron complements, Schur complements, and principal submatrices of irreducible M matrices by utilizing the properties of M matrices. Furthermore, we discuss the monotonicity of the extended Perron complements and minimum eigenvalue. It is demonstrated that all (extended) Perron complements for the collection of M matrices are also M matrices, and M matrices and their Perron complements share the same minimum eigenvalue. A simple example is provided to illustrate the findings.
Article
Chemistry, Physical
Anders M. N. Niklasson
Summary: The extended Lagrangian Born-Oppenheimer molecular dynamics (XL-BOMD) is formulated for orbital-free Hohenberg-Kohn density functional theory and charge equilibration and polarizable force-field models. It introduces features such as a metric tensor generalization, preconditioners, and the use of a single Coulomb summation for determining fully equilibrated charges and interatomic forces. The orbital-free formulation allows for separate treatment of short-range energy terms and long-range electrostatic interactions, demonstrating accuracy, convergence, and stability in molecular dynamics simulations.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Particles & Fields
Lucien Heurtier, Hao-Lin Li, Huayang Song, Shufang Su, Wei Su, Jiang-Hao Yu
Summary: Investigation of a class of neutral naturalness models reveals the Higgs boson as a pseudo-Goldstone boson, with various dimension-six operators obtained by integrating out the radial mode. Chi (2) fit to precision measurements of Higgs couplings suggests a new physics scale could be explored up to 2.3 (2.4) TeV at future colliders, with limits comparable to indirect constraints from electroweak precision measurements.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
S. James Gates, Gabriel Hannon, Rui Xian Siew, Kory Stiffler
Summary: In this article, we explore the relationship between holoraumy and Hodge duality, and find that this relationship only holds in four dimensions for a specific case. Beyond six dimensions, this relationship is not supported by the structure of supersymmetric theories. Moreover, we provide evidence for a linkage from higher-dimensional supersymmetry to an infinite-dimensional algebra extending Spin(N) through the reduction to 1D theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Linda M. Carpenter, Matthew J. Smylie
Summary: We investigate the phenomenology of scalar fields in the weak and Higgs sectors of minimal R-symmetric models. We focus on the 'swino' and 'sbino', scalar partners to chiral fields that couple with electroweak gauge bosons in Dirac gaugino models. These fields exist in adjoint representations of SU(2) and U(1) and have both CP-even and CP-odd components. We summarize the interactions and compute the decay widths of these new states to one loop order. Additionally, we explore their contributions to the mass spectrum of MSSM sfermions and study their production cross sections and decay signatures in colliders. Our findings indicate that a large parameter space remains unconstrained by current collider data.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Matteo Beccaria, Francesco Galvagno, Azeem Hasan
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Matteo Beccaria, Hongliang Jiang, Arkady A. Tseytlin
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Chemistry, Analytical
Eleonora Alfinito, Matteo Beccaria, Mariangela Ciccarese
Article
Physics, Particles & Fields
M. Beccaria, A. A. Tseytlin
Summary: The research investigates the localization representations of 1/2 BPS circular Wilson loop W in N = 4 SYM theory and calculates their 1/N expansions in the limit of large 't Hooft coupling lambda. It discovers properties related to string coupling and string tension, as well as the expansion forms of Wilson loops and correlators with chiral primary operators. Similar phenomena are found in the ABJM theory as well.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
M. Beccaria, A. A. Tseytlin
Summary: The article discusses the localization approach to N = 2 superconformal SU(N) x SU(N) quiver theory and the non-Gaussian two-matrix model representation of the BPS circular SU(N) Wilson loop W. The study focuses on the subleading 1/N-2 term in the large N expansion of W at weak and strong coupling, particularly in the case of symmetric quiver with equal gauge couplings. A string theory argument suggests that the 1/N-2 term in this orbifold theory should have similar strong coupling asymptotics as in the N = 4 SYM case, which is supported by numerical studies of the localization matrix model. Additionally, a relation between the 1/N-2 term in the Wilson loop expectation value and the derivative of the free energy of the orbifold gauge theory on a 4-sphere is found.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
M. Beccaria, A. Hasan
Summary: This paper discusses how to extract the strong coupling limit of non-planar corrections using the Eynard-Orantin topological recursion and saddle point treatment. Working directly at strong coupling simplifies the form of matrix model multi-point resolvents and allows for identification and rigorous proof of genus expansion structures. Additionally, novel results regarding the structure of multiple coincident circular supersymmetric Wilson loops and their correlator with single trace chiral operators are provided.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
M. Beccaria, G. Dunne, A. A. Tseytlin
Summary: In this study, the expectation value of the circular BPS Wilson loop in N = 2 superconformal SU(N) gauge theory is investigated, with connections to AdS/CFT duality established through string theory path integrals and localization matrix model representations, confirming the lambda(3/2) scaling prediction. The research provides insights into the universal scaling behavior of non-planar corrections in large 't Hooft coupling regimes in the context of superstring theory dualities.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
M. Beccaria, G. Dunne, A. A. Tseytlin
Summary: The study continues with the strong-coupling expansion of non-planar corrections in N = 2 4d superconformal models, focusing on theories with gauge groups SU(N) and Sp(2N). Exact differential relations between 1/N terms in the free energy and 1/2-BPS Wilson loop expectation value are found using the localization matrix model representation, with discussions on their large 't Hooft coupling expansions and dual string theory interpretation. Resummed expressions for leading strong coupling terms in the 1/N expansion are derived in the Sp(2N) case, along with the identification of exponentially suppressed contributions to non-planar corrections and comments on their resurgence properties.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
M. Beccaria, S. Giombi, A. A. Tseytlin
Summary: In this study, we extend previous work and find the two-loop term in the beta-function for the scalar coupling in a generalized Wilson loop operator of the N = 4 SYM theory. We also predict the two-loop term in the anomalous dimension of the scalar field inserted on the standard Wilson loop. Additionally, we compute the two-point correlators of scalars inserted on the Wilson line.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Correction
Physics, Particles & Fields
M. Beccaria, A. A. Tseytlin
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Multidisciplinary
M. Beccaria, S. Giombi, A. A. Tseytlin
Summary: The paper investigates the generalized Wilson loop operator in the N = 4 SYM theory, focusing on its beta function and Wilson loop expectation value. By generalizing previous results, the study considers arbitrary representations of the gauge group and goes beyond the planar limit. It is found that in a specific limit, the generalized Wilson loop reduces to a purely scalar line operator. The computation of the beta function and circular loop expectation value in this limit provides constraints on the structure of the beta function for general representations.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Physics, Particles & Fields
M. Beccaria, G. P. Korchemsky, A. Tseytlin
Summary: The paper investigates the strong 't Hooft coupling expansion in special four-dimensional N = 2 superconformal models that are planar-equivalent to N = 4 super Yang-Mills theory. By utilizing a Fredholm determinant of a Bessel operator and a generalized Szego-Akhiezer-Kac formula, the expansion of leading corrections to various observables is derived and it is shown that the resulting strong-coupling expansions suffer from Borel singularities.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
M. Beccaria, A. Cabo-Bizet
Summary: This study considers a four dimensional U(N) N = 4 SYM theory interacting with a 3d N = 4 theory on a co dimension-one interface, which is holographically dual to the D3-D5 system without flux. Localization captures various observables in this dCFT, including the free energy, defect expectation value, and single trace 1/2-BPS composite scalars. These quantities can be computed in a hermitian one-matrix model with a non-polynomial single-trace potential. The integrable Volterra hierarchy underlying the matrix model is exploited to systematically study its 1/N expansion at any 't Hooft coupling.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
M. Beccaria, A. Cabo-Bizet
Summary: This paper studies the Schur index of N = 4 U(N) SYM theory in 4d and its holographic giant graviton-type expansion at finite N. The world-volume brane superconformal index is computed using a recently proposed definition of the gauge holonomy integral as a multivariate residue. The brane expansion and its relation to previous giant graviton-type representations of the Schur index are clarified.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Chemistry, Analytical
Eleonora Alfinito, Francesco Milano, Matteo Beccaria, Rosella Cataldo, Livia Giotta, Massimo Trotta, Maria Rachele Guascito